When there is a discrepancy between the information in this technical report and information in JDox, assume JDox is correct. TECHNICAL REPORT Title: NIRCam Point Source SNR vs. Filter, Source Brightness and Readout Combinations Authors: M. Robberto Phone: 410-338-4382 Doc #: JWST-STScI-002128, Date: June 21, 2010 Rev: - Release Date: 29 November 2010 1.0 Abstract I calculate the signal-to-noise achieved by NIRCam in imaging mode on point sources of different brightness (from 1 njy to 1 mjy), in all 29 NIRCam filters and for all 110 readout combinations. The calculation includes cosmic rays, realistic PSFs, flat-field, gain and digitization errors, and the current best understanding of the instrument background and total throughput (telescope included). The results provide the most accurate prediction to date of NIRCam point-source sensitivity for typical background values. Using these results, I select a subset of optimal readout combinations for each filter and flux level. Their overall frequency shows that ramps made by large groupaverages deliver, on average, the largest gain in signal-to-noise even in the presence of photon noise. This study may be useful for planning NIRCam observations in general. It may also allow to set the NIRCam readout combinations proposed by default by the JWST APT and possibly to simplify and/or optimize the current set of NIRCam readout patterns. 2.0 Introduction The goal of this report is to analyze how the signal-to-noise obtained in a NIRCam point source observation varies with the readout combinations, for all filters and over a wide range of source brightnesses. For readout combination I mean a combination of readout pattern (9 in total, from RAPID to DEEP8) and Ngroup (up to 10 typically, 20 for the DEEP2 and DEEP8 readout patterns). The method used follows the strategy developed in a number of previous studies. In particular, in Robberto (2010) I have estimated how the effective signal-to-noise per pixel depends on the readout combination for different photon rates, taking into account the effect of cosmic rays. This sets the basis for this study, where I calculate the signal-to-noise reached by co-adding all pixels falling within a given aperture extraction radius and accounting for all relevant noise sources. The calculation assumes the baseline parameters of the NIRCam Exposure Time Calculators (Rieke 2005) and NIRCam model PSFs calculated by J. Anderson (Anderson 2009), and is therefore supposed to be quite realistic. The calculation is performed for 29 NIRCam filters and 13 levels of source brightness, from 1 njy to 1 mjy, a range of 15 magnitudes appropriate for the large majority of Operated by the Association of Universities for Research in Astronomy, Inc., for the National Aeronautics and Space Administration under Contract NAS5-03127
NIRCam imaging programs. Each of these 29 13=377 combinations of filter and flux produces a PSF (background included) in units of counts/s which is sampled with each one of the 110 NIRCam readout combinations, Aperture photometry is then extracted using the classic formula of DAOPHOT and the associated signal-to-noise is derived. The super-sample of 377 110=41,470 signal-to-noise estimates is then analyzed to remove sub-optimal readout combinations. These are defined as the readout patterns which provide, for a given combination of filter and source brightness, one of the following three conditions: 1) a signal-to-noise lower than that obtained with a shorter integration time, 2) source saturation; or 3) exceedingly low signal-to-noise ratio. By analyzing the frequency of good vs. bad occurrence of each readout combination, I can flag those scarcely or never used, Eventually, these readout combiations could therefore not be offered to the general NIRCam user. The calculated signal-to-noise tables represent our current best understanding of NIRCam sensitivity in imaging mode for point sources and can be used for science planning and the development of ETC and APT. 3.0 Methods and parameters The main engine of the code is the procedure that calculates, given a certain photon rate, the noise, and therefore the effective signal-to-noise, associated to the 110 NIRCam readout combinations. This procedure has been documented in Robberto (2009a) and Robberto (2010) and I point to those documents for the details. Here I just remind that the procedure include the effect of cosmic rays, assumes a readout noise per single read of 20 electrons (or 20 counts, as gain equal to 1 is also assumed) and a linearity corrected ramp. The procedure uses the expression for the general signal-to-noise equation for the sampling of the ramp with groups of averaged frames, originally introduced by Rauscher et al (2007), rederived and correctly expressed in Robberto (2009b). The analytical treatment assumes that the sample/groups are uniformly weighted. Cosmic Rays are accounted for in a fully analytical way, and I make the assumption that they can all be identified and properly treated by ramp trimming and, when needed, by rejecting the affected datapoint (group of coadded samples). Other errors like 1/f, residual nonlinearity and bias drifts, etc. are supposed to be negligible and therefore ignored. This main computational routine, pixel-based, is called by a procedure that generates, for each filter, the PSF in counts/s. The PSFs are taken from a set of fits files provided by J. Anderson, giving the PSF in 24 NIRCam bandpasses. These PSFs have been calculated for a typical configuration of the JWST OTA (OPD01), less than optimal but still within JWST specifications. The PSFs are calculated with 8mas pixels, so I have rebinned them 4 times and 8 times to match the NIRCam short and long wavelength channels (32mas and 64mas pixel scale, respectively). Each PSF has been finally trimmed to a 64x64 pixel square array and normalized to 1 total count unit. I have then associated the PSFs to the full set of 29 flight NIRCam filters present in the Excel NIRCam Exposure Time Calculator (M. Rieke 2005), listed in Table 1. Filters F225N and F418N, also present in the Excel spreadsheet, have not been used as they are no longer present in the flight model. - 2 -
For convenience, I remind the naming convention for the filters: FXXXR assumes that XXX is the central wavelength in microns, whereas R = W (Wide), M (Medium), N (Narrow) stands for R=λ/Δλ~4,10, and 100, respectively. The two filters wih the 2 suffix (F150W2 and F322W2) have ultra-wide bandpass, i.e R~1.5 and R~2, respectively. Table 1 NIRCam filters FILTER F070W F090W F115W F140M F150W F150W2 F162M F64N F182M F187N F200W F210M F212N F250M F277W F300M F322W2 F323N F335M F356W F360M F405N F410M F430M F444W F460M F466N F470N F480M Short Wavelength Channel Long Wavelength Channel - 3 -
For filters lacking a corresponding Anderson s PSF, I have simply used the PSF closest in wavelength. The error associated to this rounding is comparable to the error introduced by neglecticing the chromatic dependence of the PSF on the source color for broad-band filters. Next I have set 13 flux levels for the point sources, distributed uniformly in logarithm between 1 njy and 1 mjy, as shown in Table 2. Table 2 Flux levels considered in the present study 1 njy 3.16 njy 10 njy 31.6 njy 100 njy 316 nj 1 µjy 3.16 µjy 10 µjy 31.6 µjy 100 µjy 316 µjy 1 mjy To convert physical fluxes to counts/s one has to assume an instrument model and transfer the photons from the telescope aperture to the detector accounting for all efficiency factors. I have used the parameters of the NIRCam Exposure Time Calculator of Rieke (2005). This is an Excel spreadsheet that tracks the allocation of performance parameters between NIRCam components and includes the background and source fluxes that NIRCam detector will see on orbit. In particular, it calculates the signal-to-noise achieavable in a given period of time taking into account the photoelectrons collected from the target source, from the zodiacal background, from the OTE and ISIM thermal emission, from the diffuse Milky Way background, from the scattered background, plus dark current and detector read noise. Some of these terms (Galaxy and OTE/ISIM) turn out to be negligible at all NIRCam wavelengths. The most convenient way to pick up the conversion factor is to use, for each filter, the ratio between the total noise in integration time (cell K14, divided by 10,000 as the integration time in the spreadsheet is set to 10,000s) and the noise in Jy/s (cell K16). This directly provides the conversion factor from Jy to counts/s. However, I have removed from this factor the effect of flat-field, contained in cell O14. This is because the flat-field error, being proportional to the signal falling on a pixel, has to be calculated in our case - 4 -
for each combination of readout combination and source flux, rather than treated as a constant factor. For each filter, the 13 fluxes have then been converted to counts/s and the PSF (previously normalized to 1) has been multiplied by this factor. Next I have added the total background, which is also filter dependent, taking the value from cell J11 of the Rieke (2005) Excel spreadsheet. Having calculated the PSF in counts/s, I have selected an aperture radius of 2.5 pixels, the same value adopted by the Excel spreadsheet, and selected the 19 pixels falling in the aperture (no attempt was made to account for fractional pixels). This is the same extraction radius used by Rieke (2005) and therefore allows for easy comparison. The count rates of each of these 19 pixels have been ingested into the main computational routine to obtain, for each pixel, the 110 equivalent noise values, one for each readout combination. The same procedure has been adopted for the sky, but in this case I have directly used the sky rate estimated by the spreadsheet (cell J11) rather than the value measured on the outer PSF annulus. This is because, as the source brightness and wavelength increase, the PSF wings contaminate more and more the sky measure in a surrounding annulus; to reduce this problem I should have varied the size of the sky annuus depending on the flux and PSF, but this would have made the comparison of the results less robust. Thus, for each combination of filter, flux and readout combination I calculate an integrated source flux which accounts for the PSF shape, a sky flux, and a sky variance which accounts for the readout combination and CR flux. These are the three ingredients that enter in the classic formula for the magnitude error used by DAOPHOT, which accounts for the scatter in the sky values, the random photon noise of the source and the uncertainty in the mean sky brightness. These terms, added in quadrature, provide the photometric error associated to the source flux measurement At the same time, I have also estimated the integrated counts of the brightest PSF pixel to monitor saturation. I have assumed a source saturated when its peak is higher than 100,000 electrons. A few final remarks about our treatment of flat-field, gain/digitization and bitshift errors: 1. The flat-field error has been treated by adding quadratically to the final pixel noise an extra noise term equal to 1/100 of the source signal (including background). 2. For simplicity, the calculation is performed assuming gain equal to 1. However, I have included the extra noise term associated with the choice of a different gain, which is given by (see e.g. https://ccrma.stanford.edu/~jos/mdft/round_off_error_variance.html) g( e / adu) 12 and is therefore equal to 0.577 if g(e/adu)=2. 3. At the same time, I have included the error due to the loss of resolution due to the bitshifts used to average the frames: when two numbers coded with 16 bit are averaged (coadded and divided by 2), one needs a 17 bit word to fully encode the - 5 -
result. Instead, if the result is stored in a 16-bit word, i.e. if the average loses the least significant bit, there is a loss of information. In practice, assuming gain=1, the Analog to Digital Conversion noise is 1/ 12 if one has no bitshifts, 2/ 12 if one averages N group = 2frames (i.e. 1 bitshift, which means 1 bit lost), 4/ 12 if one average N group = 4 frames (2 bitshifts, 2 bit lost) and 8/ 12 if one averages N group = 8frames (3 bitshifts, 3 bit lost). This error has to be compounded with the gain/digitization error, which adds another bit lost (see point 2 above), so that we have at the end an additive error equal to g( e / adu) N group 12 to be added quadratically to the readout noise (averaged over the N groupframes). I n practice, this corresponds to adding in quadrature a noise term equal to 0.577, 1.155, 2.309 and 4.619 for the cases with g=2 and N group = 1,2,4,8, respectively. These values have to be compared with the reduction in readout noise achieved by coadding the frames in a group. Assuming a readout noise (single read, ktc noise excluded) of 20 electrons, by coadding 1, 2, 4 and 8 frames we have 20.0, 14.1, 10.0, 7.1 electrons. Table 3 summarizes the situation; the last columns shows the total noise estimated by adding in quadrature the two terms. I have also added the case of N frames = 16, which has not been considered for NIRCam, to illustrate how the quantization/bitshift error becomes dominant when more than 8 frames are averaged in a 16 bit word. Table 3 Equivalent Readout noise for single sample, taking in account quanitization and bit shift errors N 20e / N frames frames 2( e / adu) N frames ( 15e / N frames ) 12 2 2(e/adu) N + 12 1 20.00 0.577 20.00 2 14.14 1.155 14.19 4 10.00 2.309 10.26 8 7.07 4.619 8.44 16 5.00 9.24 10.50 frames 2 1/ 2-6 -
4.0 Results For each filter, I have tabulated: 1. Source counts integrated within the aperture. They come from the nominal flux rate, distributed over the full PSF and sampled by the inner 19 pixels. For each filter and readout combination, they therefore scale directly with the exposure time 2. Photometric error, computed using the DAOPHOT formula. 3. Signal-to-noise ratio, from the ratio of Source over Error, i.e. points 1) and 2) above. 4. Peak value, for the brightest pixel in the PSF. Table 4 show a sample of the results, for the F200W filter. For each readout combination, Table 4 shows the corresponding integration time (from the reset), and the signal, noise, signal-to-noise and peak value calculated for our standard aperture of 2.5 pixel radius, for all 13 flux levels. As the signal depends only on the integration time, readout combinations having the same integration time produce the same signal. The same is true for the peak counts. The noise term (and therefore the signal to noise) cannot be calculated for ramps of only 1 read (no fit possible). These are marked with a NaN, as Not a Number is the output directly provided by the IDL routine used the perform the calclations. Note the readout combination nr 79, MEDIUM8-10 (highlighted with a yellow background), which provides a signal-to-noise ratio of about 3 for a 10 njy source in 1,000 seconds; this corresponds to SNR~10 for a 10 njy source in 10,000 seconds, the round reference value usually reported for NIRCAM sensitivity. Figure 1 shows the content of Table 3 as plots of the signal-to-noise achieved vs time. Similar tables for each filter and integration time are available for download from the SOCCER or NGIN web pages (see Appendix at the end of this document). - 7 -
Table 4 Signal, Noise, Signal-to-Noise and peak value in electrons for a 2.5pixel aperture radius, F200W filter # Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 0 RAPID-1 10.6 counts 0.3 0.8 2.6 8.1 25.6 81 256.1 809.8 2560.8 8098 25608.2 80980.4 256082.4 noise NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN SNR NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN max 1.8 2 2.4 3.7 8 21.4 63.9 198.3 623.3 1967.2 6217.1 19656.4 62155.4 1 BRIGHT1-1 10.6 counts 0.3 0.8 2.6 8.1 25.6 81 256.1 809.8 2560.8 8098 25608.2 80980.4 256082.4 noise NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN SNR NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN max 1.8 2 2.4 3.7 8 21.4 63.9 198.3 623.3 1967.2 6217.1 19656.4 62155.4 2 RAPID-2 21.2 counts 0.5 1.6 5.1 16.2 51.2 162 512.2 1619.6 5121.6 16196.1 51216.5 161960.7 512164.7 noise 270.4 270.4 270.4 270.4 270.5 270.7 271.4 273.5 280.2 300.5 357.7 501 816.3 SNR 0.002 0.006 0.019 0.06 0.189 0.598 1.887 5.921 18.277 53.902 143.17 323.245 627.455 max 3.6 3.9 4.8 7.4 15.9 42.8 127.8 396.6 1246.6 3934.5 12434.2 39312.9 124310.7 3 BRIGH2-1 21.2 counts 0.5 1.6 5.1 16.2 51.2 162 512.2 1619.6 5121.6 16196.1 51216.5 161960.7 512164.7 noise NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN SNR NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN max 3.6 3.9 4.8 7.4 15.9 42.8 127.8 396.6 1246.6 3934.5 12434.2 39312.9 124310.7 4 SHALLOW2-1 21.2 counts 0.5 1.6 5.1 16.2 51.2 162 512.2 1619.6 5121.6 16196.1 51216.5 161960.7 512164.7 noise NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN SNR NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN max 3.6 3.9 4.8 7.4 15.9 42.8 127.8 396.6 1246.6 3934.5 12434.2 39312.9 124310.7 5 MEDIUM2-1 21.2 counts 0.5 1.6 5.1 16.2 51.2 162 512.2 1619.6 5121.6 16196.1 51216.5 161960.7 512164.7 noise NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN SNR NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN max 3.6 3.9 4.8 7.4 15.9 42.8 127.8 396.6 1246.6 3934.5 12434.2 39312.9 124310.7 6 DEEP2-1 21.2 counts 0.5 1.6 5.1 16.2 51.2 162 512.2 1619.6 5121.6 16196.1 51216.5 161960.7 512164.7 noise NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN SNR NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN max 3.6 3.9 4.8 7.4 15.9 42.8 127.8 396.6 1246.6 3934.5 12434.2 39312.9 124310.7-8 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 7 RAPID-3 31.8 counts 0.8 2.4 7.7 24.3 76.8 242.9 768.2 2429.4 7682.5 24294.1 76824.7 242941 768247.1 noise 203 203 203 203.1 203.2 203.6 205 209.2 221.9 258.4 351.3 557.4 976.5 SNR 0.004 0.012 0.038 0.12 0.378 1.193 3.748 11.615 34.62 94.022 218.71 435.872 786.706 max 5.5 5.9 7.1 11.2 23.9 64.2 191.7 594.9 1869.9 5901.7 18651.4 58969.3 186466.1 8 BRIGHT1-2 31.8 counts 0.8 2.4 7.7 24.3 76.8 242.9 768.2 2429.4 7682.5 24294.1 76824.7 242941 768247.1 noise 203 203 203 203.1 203.2 203.6 205 209.2 221.9 258.4 351.3 557.4 976.5 SNR 0.004 0.012 0.038 0.12 0.378 1.193 3.748 11.615 34.62 94.022 218.71 435.872 786.706 max 5.5 5.9 7.1 11.2 23.9 64.2 191.7 594.9 1869.9 5901.7 18651.4 58969.3 186466.1 9 RAPID-4 42.4 counts 1 3.2 10.2 32.4 102.4 323.9 1024.3 3239.2 10243.3 32392.1 102432.9 323921.4 1024329.4 noise 171.5 171.5 171.5 171.6 171.8 172.4 174.5 181 200.1 251.8 373.3 626.8 1129 SNR 0.006 0.019 0.06 0.189 0.596 1.878 5.869 17.896 51.18 128.627 274.366 516.774 907.321 max 7.3 7.8 9.5 14.9 31.9 85.7 255.6 793.2 2493.2 7868.9 24868.5 78625.8 248621.4 10 SHALLOW4-1 42.4 counts 1 3.2 10.2 32.4 102.4 323.9 1024.3 3239.2 10243.3 32392.1 102432.9 323921.4 1024329.4 noise NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN SNR NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN max 7.3 7.8 9.5 14.9 31.9 85.7 255.6 793.2 2493.2 7868.9 24868.5 78625.8 248621.4 11 RAPID-5 53 counts 1.3 4 12.8 40.5 128 404.9 1280.4 4049 12804.1 40490.2 128041.2 404901.7 1280411.8 noise 151.9 151.9 151.9 152 152.3 153.2 156.2 165.1 190.7 256.2 401.5 694.7 1269.8 SNR 0.008 0.027 0.084 0.266 0.841 2.642 8.2 24.53 67.153 158.07 318.878 582.849 1008.393 max 9.1 9.8 11.9 18.6 39.9 107.1 319.6 991.5 3116.5 9836.1 31085.6 98282.2 310776.8 12 BRIGHT1-3 53 counts 1.3 4 12.8 40.5 128 404.9 1280.4 4049 12804.1 40490.2 128041.2 404901.7 1280411.8 noise 169.6 169.6 169.6 169.7 170 170.8 173.4 181.5 205.1 267.2 408.8 699 1272.2 SNR 0.008 0.024 0.075 0.239 0.753 2.371 7.383 22.306 62.417 151.537 313.222 579.235 1006.42 max 9.1 9.8 11.9 18.6 39.9 107.1 319.6 991.5 3116.5 9836.1 31085.6 98282.2 310776.8 13 BRIGH2-2 53 counts 1.3 4 12.8 40.5 128 404.9 1280.4 4049 12804.1 40490.2 128041.2 404901.7 1280411.8 noise 160.5 160.5 160.5 160.6 160.9 161.8 164.6 173.1 197.7 261.5 405 696.8 1270.9 SNR 0.008 0.025 0.08 0.252 0.796 2.502 7.78 23.396 64.776 154.867 316.157 581.126 1007.455 max 9.1 9.8 11.9 18.6 39.9 107.1 319.6 991.5 3116.5 9836.1 31085.6 98282.2 310776.8-9 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 14 RAPID-6 63.6 counts 1.5 4.9 15.4 48.6 153.6 485.9 1536.5 4858.8 15364.9 48588.2 153649.4 485882.1 1536494.1 noise 138.1 138.1 138.2 138.3 138.7 139.9 143.7 155.2 187.1 265 431 759.2 1400.9 SNR 0.011 0.035 0.111 0.351 1.108 3.473 10.692 31.311 82.118 183.365 356.516 639.987 1096.797 max 10.9 11.7 14.3 22.3 47.8 128.5 383.5 1189.8 3739.8 11803.4 37302.7 117938.7 372932.1 15 RAPID-7 74.2 counts 1.8 5.7 17.9 56.7 179.3 566.9 1792.6 5668.6 17925.8 56686.2 179257.7 566862.4 1792576.6 noise 127.7 127.8 127.8 128 128.4 130 134.7 148.8 186.8 275.9 460.2 820.4 1524.2 SNR 0.014 0.044 0.14 0.443 1.396 4.361 13.303 38.085 95.94 205.482 389.538 690.985 1176.053 max 12.7 13.7 16.7 26.1 55.8 149.9 447.4 1388.1 4363.1 13770.6 43519.8 137595.2 435087.5 16 BRIGHT1-4 74.2 counts 1.8 5.7 17.9 56.7 179.3 566.9 1792.6 5668.6 17925.8 56686.2 179257.7 566862.4 1792576.6 noise 150.6 150.6 150.7 150.8 151.2 152.5 156.6 168.9 203.3 287.4 467.3 824.5 1526.6 SNR 0.012 0.038 0.119 0.376 1.185 3.716 11.445 33.553 88.168 197.234 383.586 687.502 1174.231 max 12.7 13.7 16.7 26.1 55.8 149.9 447.4 1388.1 4363.1 13770.6 43519.8 137595.2 435087.5 17 SHALLOW2-2 74.2 counts 1.8 5.7 17.9 56.7 179.3 566.9 1792.6 5668.6 17925.8 56686.2 179257.7 566862.4 1792576.6 noise 135.4 135.4 135.5 135.6 136.1 137.5 142.1 155.5 192.2 279.6 462.5 821.7 1525 SNR 0.013 0.042 0.132 0.418 1.317 4.121 12.618 36.452 93.252 202.751 387.617 689.873 1175.473 max 12.7 13.7 16.7 26.1 55.8 149.9 447.4 1388.1 4363.1 13770.6 43519.8 137595.2 435087.5 18 RAPID-8 84.8 counts 2 6.5 20.5 64.8 204.9 647.8 2048.7 6478.4 20486.6 64784.3 204865.9 647842.9 2048658.9 noise 119.6 119.6 119.7 119.9 120.5 122.3 128.1 144.8 188.6 287.7 488.7 878.5 1641.2 SNR 0.017 0.054 0.171 0.541 1.701 5.296 15.997 44.741 108.643 225.17 419.241 737.416 1248.274 max 14.6 15.6 19 29.8 63.8 171.3 511.3 1586.4 4986.4 15737.8 49736.9 157251.6 497242.8 19 BRIGH2-3 84.8 counts 2 6.5 20.5 64.8 204.9 647.8 2048.7 6478.4 20486.6 64784.3 204865.9 647842.9 2048658.9 noise 129.3 129.3 129.3 129.5 130.1 131.8 137.2 152.9 194.9 292 491.2 880 1642 SNR 0.016 0.05 0.158 0.5 1.575 4.915 14.937 42.367 105.108 221.896 417.054 736.179 1247.638 max 14.6 15.6 19 29.8 63.8 171.3 511.3 1586.4 4986.4 15737.8 49736.9 157251.6 497242.8 20 MEDIUM8-1 84.8 counts 2 6.5 20.5 64.8 204.9 647.8 2048.7 6478.4 20486.6 64784.3 204865.9 647842.9 2048658.9 noise NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN SNR NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN max 14.6 15.6 19 29.8 63.8 171.3 511.3 1586.4 4986.4 15737.8 49736.9 157251.6 497242.8-10 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 21 DEEP8-1 84.8 counts 2 6.5 20.5 64.8 204.9 647.8 2048.7 6478.4 20486.6 64784.3 204865.9 647842.9 2048658.9 noise NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN SNR NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN max 14.6 15.6 19 29.8 63.8 171.3 511.3 1586.4 4986.4 15737.8 49736.9 157251.6 497242.8 22 RAPID-9 95.4 counts 2.3 7.3 23 72.9 230.5 728.8 2304.7 7288.2 23047.4 72882.3 230474.1 728823.2 2304741.5 noise 113 113 113.1 113.3 114 116.2 123 142.3 191.6 300 516.3 934.1 1752.8 SNR 0.02 0.064 0.204 0.643 2.022 6.271 18.741 51.206 120.32 242.975 446.428 780.271 1314.862 max 16.4 17.6 21.4 33.5 71.8 192.7 575.2 1784.7 5609.6 17705 55954.1 176908 559398.2 23 BRIGHT1-5 95.4 counts 2.3 7.3 23 72.9 230.5 728.8 2304.7 7288.2 23047.4 72882.3 230474.1 728823.2 2304741.5 noise 137.5 137.5 137.6 137.7 138.3 140.2 145.8 162.6 207.1 310.3 522.4 937.6 1754.9 SNR 0.017 0.053 0.168 0.529 1.666 5.2 15.803 44.836 111.276 234.91 441.148 777.313 1313.353 max 16.4 17.6 21.4 33.5 71.8 192.7 575.2 1784.7 5609.6 17705 55954.1 176908 559398.2 24 SHALLOW4-2 95.4 counts 2.3 7.3 23 72.9 230.5 728.8 2304.7 7288.2 23047.4 72882.3 230474.1 728823.2 2304741.5 noise 126.7 126.7 126.8 127 127.6 129.6 135.7 153.5 200 305.5 519.6 936 1753.9 SNR 0.018 0.058 0.182 0.574 1.806 5.625 16.986 47.487 115.221 238.559 443.581 778.685 1314.054 max 16.4 17.6 21.4 33.5 71.8 192.7 575.2 1784.7 5609.6 17705 55954.1 176908 559398.2 25 RAPID-10 106 counts 2.6 8.1 25.6 81 256.1 809.8 2560.8 8098 25608.2 80980.4 256082.3 809803.4 2560823.5 noise 107.5 107.5 107.6 107.9 108.7 111.3 119.1 141 195.3 312.3 543 987.3 1860 SNR 0.024 0.075 0.238 0.751 2.356 7.278 21.51 57.435 131.092 259.293 471.632 820.221 1376.802 max 18.2 19.6 23.8 37.2 79.7 214.1 639.1 1983.1 6232.9 19672.3 62171.2 196564.5 621553.5 26 BRIGHT1-6 116.6 counts 2.8 8.9 28.2 89.1 281.7 890.8 2816.9 8907.8 28169.1 89078.4 281690.6 890783.9 2816906.2 noise 127.6 127.6 127.7 128 128.7 131.1 138.5 159.6 213.7 333.5 574.1 1041.5 1964.9 SNR 0.022 0.07 0.221 0.696 2.188 6.792 20.339 55.806 131.831 267.077 490.689 855.277 1433.586 max 20 21.5 26.2 41 87.7 235.5 703 2181.4 6856.2 21639.5 68388.3 216221 683708.9 27 BRIGH2-4 116.6 counts 2.8 8.9 28.2 89.1 281.7 890.8 2816.9 8907.8 28169.1 89078.4 281690.6 890783.9 2816906.2 noise 113.4 113.5 113.5 113.8 114.7 117.4 125.5 148.4 205.4 328.2 570.9 1039.7 1963.9 SNR 0.025 0.079 0.248 0.783 2.456 7.59 22.445 60.006 137.144 271.401 493.39 856.756 1434.328 max 20 21.5 26.2 41 87.7 235.5 703 2181.4 6856.2 21639.5 68388.3 216221 683708.9-11 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 28 SHALLOW2-3 127.2 counts 3.1 9.7 30.7 97.2 307.3 971.8 3073 9717.6 30729.9 97176.4 307298.8 971764.2 3072988.2 noise 117.3 117.4 117.5 117.8 118.7 121.5 130.1 154.2 214 342.8 597.4 1090 2064.3 SNR 0.026 0.083 0.262 0.825 2.59 7.998 23.624 63.009 143.575 283.456 514.402 891.564 1488.666 max 21.8 23.5 28.6 44.7 95.7 257 766.9 2379.7 7479.5 23606.7 74605.4 235877.4 745864.2 29 MEDIUM2-2 127.2 counts 3.1 9.7 30.7 97.2 307.3 971.8 3073 9717.6 30729.9 97176.4 307298.8 971764.2 3072988.2 noise 117.3 117.4 117.5 117.8 118.7 121.5 130.1 154.2 214 342.8 597.4 1090 2064.3 SNR 0.026 0.083 0.262 0.825 2.59 7.998 23.624 63.009 143.575 283.456 514.402 891.564 1488.666 max 21.8 23.5 28.6 44.7 95.7 257 766.9 2379.7 7479.5 23606.7 74605.4 235877.4 745864.2 30 BRIGHT1-7 137.8 counts 3.3 10.5 33.3 105.3 332.9 1052.7 3329.1 10527.4 33290.7 105274.5 332907 1052744.4 3329071 noise 119.9 119.9 120 120.3 121.3 124.3 133.4 158.9 221.7 356.5 622.6 1138.3 2161.5 SNR 0.028 0.088 0.277 0.875 2.744 8.468 24.956 66.264 150.177 295.33 534.674 924.813 1540.194 max 23.7 25.4 30.9 48.4 103.7 278.4 830.9 2578 8102.8 25574 80822.5 255533.8 808019.6 31 BRIGH2-5 148.4 counts 3.6 11.3 35.9 113.4 358.5 1133.7 3585.2 11337.2 35851.5 113372.5 358515.2 1133724.8 3585152.5 noise 103.2 103.3 103.4 103.8 105 108.7 119.7 149.5 219.3 363.6 643.5 1183.2 2254.8 SNR 0.035 0.11 0.347 1.092 3.415 10.43 29.95 75.858 163.504 311.847 557.142 958.204 1589.991 max 25.5 27.4 33.3 52.1 111.6 299.8 894.8 2776.3 8726.1 27541.2 87039.6 275190.3 870174.9 32 SHALLOW4-3 148.4 counts 3.6 11.3 35.9 113.4 358.5 1133.7 3585.2 11337.2 35851.5 113372.5 358515.3 1133724.9 3585153.2 noise 100.5 100.6 100.7 101.1 102.3 106.1 117.4 147.6 218 362.8 643 1182.9 2254.7 SNR 0.036 0.113 0.356 1.122 3.504 10.684 30.548 76.824 164.47 312.524 557.537 958.414 1590.094 max 25.5 27.4 33.3 52.1 111.6 299.8 894.8 2776.3 8726.1 27541.2 87039.6 275190.3 870175 33 BRIGHT1-8 159 counts 3.8 12.1 38.4 121.5 384.1 1214.7 3841.2 12147.1 38412.4 121470.5 384123.5 1214705.1 3841235.2 noise 113.7 113.7 113.9 114.2 115.4 119 129.9 159.6 230.4 378.8 668.6 1229.5 2347.4 SNR 0.034 0.107 0.337 1.063 3.329 10.205 29.578 76.126 166.69 320.687 574.542 987.964 1636.395 max 27.3 29.3 35.7 55.9 119.6 321.2 958.7 2974.6 9349.4 29508.4 93256.8 294846.7 932330.2 34 BRIGHT1-9 180.2 counts 4.4 13.8 43.5 137.7 435.3 1376.7 4353.4 13766.7 43534 137666.6 435340 1376666 4353400 noise 108.6 108.6 108.8 109.2 110.6 114.9 127.5 161.2 239.6 400.4 712.3 1316 2524.7 SNR 0.04 0.127 0.4 1.261 3.936 11.985 34.149 85.376 181.704 343.821 611.209 1046.06 1724.322 max 31 33.2 40.5 63.3 135.6 364 1086.5 3371.2 10596 33442.9 105691 334159.7 1056641-12 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 35 BRIGH2-6 180.2 counts 4.4 13.8 43.5 137.7 435.3 1376.7 4353.4 13766.7 43534 137666.6 435340 1376666 4353400 noise 96.1 96.1 96.3 96.8 98.3 103.1 117 153 234.1 397.1 710.3 1315 2524.1 SNR 0.045 0.143 0.452 1.423 4.427 13.352 37.218 89.962 185.977 346.7 612.858 1046.924 1724.741 max 31 33.2 40.5 63.3 135.6 364 1086.5 3371.2 10596 33442.9 105691 334159.7 1056641 36 SHALLOW2-4 180.2 counts 4.4 13.8 43.5 137.7 435.3 1376.7 4353.4 13766.7 43534 137666.6 435340 1376666 4353400 noise 106.7 106.7 106.9 107.3 108.7 113.1 125.9 160 238.7 399.9 712 1315.9 2524.6 SNR 0.041 0.129 0.407 1.283 4.003 12.173 34.584 86.055 182.36 344.271 611.469 1046.196 1724.388 max 31 33.2 40.5 63.3 135.6 364 1086.5 3371.2 10596 33442.9 105691 334159.7 1056641 37 MEDIUM8-2 190.8 counts 4.6 14.6 46.1 145.8 460.9 1457.6 4609.5 14576.5 46094.8 145764.6 460948.3 1457646.4 4609483 noise 107.3 107.3 107.5 107.9 109.4 114 127.4 163 244.6 411.2 733.5 1357.9 2610.7 SNR 0.043 0.136 0.429 1.351 4.213 12.788 36.182 89.446 188.422 354.493 628.423 1073.449 1765.64 max 32.8 35.2 42.8 67 143.5 385.4 1150.4 3569.5 11219.3 35410.1 111908.1 353816.1 1118796.4 38 BRIGHT1-10 201.4 counts 4.9 15.4 48.7 153.9 486.6 1538.6 4865.6 15386.3 48655.6 153862.7 486556.4 1538626.5 4865565 noise 104.3 104.4 104.5 105 106.6 111.6 126 163.6 248.9 421.3 754 1398.7 2694.9 SNR 0.047 0.147 0.466 1.465 4.563 13.79 38.628 94.038 195.486 365.194 645.297 1100.027 1805.478 max 34.6 37.1 45.2 70.8 151.5 406.9 1214.3 3767.8 11842.6 37377.3 118125.2 373472.5 1180951.6 39 SHALLOW4-4 201.4 counts 4.9 15.4 48.7 153.9 486.6 1538.6 4865.6 15386.3 48655.6 153862.7 486556.4 1538626.6 4865565 noise 88.6 88.7 88.9 89.5 91.4 97.1 113.3 154 242.6 417.6 751.9 1397.5 2694.2 SNR 0.055 0.173 0.547 1.719 5.325 15.851 42.953 99.904 200.539 368.463 647.138 1100.983 1805.937 max 34.6 37.1 45.2 70.8 151.5 406.9 1214.3 3767.8 11842.6 37377.3 118125.2 373472.5 1180951.8 40 BRIGH2-7 212 counts 5.1 16.2 51.2 162 512.2 1619.6 5121.6 16196.1 51216.5 161960.7 512164.7 1619607 5121647.5 noise 90.8 90.8 91 91.6 93.6 99.4 116.1 157.9 249 428.8 772.7 1437.9 2777.2 SNR 0.056 0.178 0.563 1.768 5.474 16.291 44.122 102.545 205.7 377.71 662.854 1126.372 1844.204 max 36.4 39.1 47.6 74.5 159.5 428.3 1278.2 3966.1 12465.9 39344.6 124342.4 393129 1243107.1 41 SHALLOW2-5 233.2 counts 5.6 17.8 56.3 178.2 563.4 1781.6 5633.8 17815.7 56338.1 178156.8 563381.2 1781567.8 5633812.5 noise 99.4 99.5 99.7 100.3 102.3 108.2 125.1 168.2 263 451.5 813.6 1516.7 2939.1 SNR 0.057 0.179 0.565 1.776 5.509 16.467 45.017 105.891 214.198 394.576 692.496 1174.647 1916.846 max 40.1 43 52.4 81.9 175.4 471.1 1406.1 4362.7 13712.5 43279 136776.6 432441.9 1367417.8-13 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 42 MEDIUM2-3 233.2 counts 5.6 17.8 56.3 178.2 563.4 1781.6 5633.8 17815.7 56338.1 178156.8 563381.2 1781567.8 5633812.5 noise 109.8 109.9 110.1 110.7 112.4 117.8 133.6 174.7 267.2 454 815 1517.5 2939.6 SNR 0.051 0.162 0.512 1.61 5.012 15.119 42.169 102.002 210.836 392.402 691.276 1174.018 1916.547 max 40.1 43 52.4 81.9 175.4 471.1 1406.1 4362.7 13712.5 43279 136776.6 432441.9 1367417.8 43 DEEP2-2 233.2 counts 5.6 17.8 56.3 178.2 563.4 1781.6 5633.8 17815.7 56338.1 178156.8 563381.2 1781567.8 5633812.5 noise 109.8 109.9 110.1 110.7 112.4 117.8 133.6 174.7 267.2 454 815 1517.5 2939.6 SNR 0.051 0.162 0.512 1.61 5.012 15.119 42.169 102.002 210.836 392.402 691.276 1174.018 1916.547 max 40.1 43 52.4 81.9 175.4 471.1 1406.1 4362.7 13712.5 43279 136776.6 432441.9 1367417.8 44 BRIGH2-8 243.8 counts 5.9 18.6 58.9 186.3 589 1862.5 5889.9 18625.5 58898.9 186254.8 588989.4 1862548 5889895.5 noise 86.7 86.8 87 87.8 90.1 97 116.4 163.6 263.6 458.9 831.3 1553.8 3017.5 SNR 0.068 0.215 0.677 2.122 6.539 19.198 50.611 113.867 223.399 405.887 708.508 1198.678 1951.893 max 41.9 45 54.7 85.7 183.4 492.5 1470 4561 14335.8 45246.2 142993.7 452098.3 1429573.2 45 SHALLOW4-5 254.4 counts 6.1 19.4 61.5 194.4 614.6 1943.5 6146 19435.3 61459.8 194352.8 614597.6 1943528.4 6145976 noise 81.8 81.9 82.1 83 85.5 93.1 113.9 163.6 267.3 467.9 849.8 1590.9 3095.1 SNR 0.075 0.237 0.748 2.343 7.188 20.877 53.954 118.795 229.97 415.391 723.265 1221.625 1985.687 max 43.7 46.9 57.1 89.4 191.4 513.9 1533.9 4759.3 14959.1 47213.5 149210.8 471754.8 1491728.4 46 BRIGH2-9 275.6 counts 6.7 21.1 66.6 210.6 665.8 2105.5 6658.1 21054.9 66581.4 210549 665814.1 2105488.8 6658142 noise 83.6 83.7 83.9 84.8 87.5 95.5 117.5 169.6 277.9 487.5 886.9 1664.1 3247.6 SNR 0.08 0.252 0.793 2.483 7.609 22.04 56.681 124.156 239.551 431.867 750.715 1265.263 2050.175 max 47.3 50.8 61.9 96.8 207.3 556.7 1661.7 5155.9 16205.7 51147.9 161645.1 511067.7 1616039.1 47 SHALLOW2-6 286.2 counts 6.9 21.9 69.1 218.6 691.4 2186.5 6914.2 21864.7 69142.2 218646.9 691422.4 2186469.5 6914224 noise 94.3 94.3 94.6 95.4 97.9 105.4 126.4 177.6 286.3 498.9 906.1 1700.4 3322.7 SNR 0.073 0.232 0.731 2.292 7.063 20.741 54.707 123.133 241.501 438.222 763.1 1285.848 2080.907 max 49.2 52.8 64.3 100.5 215.3 578.2 1725.6 5354.2 16829 53115.1 167862.2 530724.1 1678194.5 48 MEDIUM8-3 296.8 counts 7.2 22.7 71.7 226.7 717 2267.4 7170.3 22674.5 71703.1 226745 717030.6 2267449.8 7170306.5 noise 88.1 88.2 88.5 89.3 92.1 100.3 122.9 176.7 289.1 507 923.1 1735.2 3396.3 SNR 0.081 0.257 0.811 2.538 7.785 22.599 58.342 128.286 248.006 447.222 776.732 1306.722 2111.198 max 51 54.7 66.6 104.3 223.3 599.6 1789.5 5552.6 17452.2 55082.4 174079.3 550380.6 1740350-14 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 49 DEEP8-2 296.8 counts 7.2 22.7 71.7 226.7 717 2267.4 7170.3 22674.5 71703.1 226745 717030.6 2267449.8 7170306.5 noise 88.1 88.2 88.5 89.3 92.1 100.3 122.9 176.7 289.1 507 923.1 1735.2 3396.3 SNR 0.081 0.257 0.811 2.538 7.785 22.599 58.342 128.286 248.006 447.222 776.732 1306.722 2111.198 max 51 54.7 66.6 104.3 223.3 599.6 1789.5 5552.6 17452.2 55082.4 174079.3 550380.6 1740350 50 BRIGH2-10 307.4 counts 7.4 23.5 74.3 234.8 742.6 2348.4 7426.4 23484.3 74263.9 234843 742638.9 2348430.2 7426389 noise 81.1 81.2 81.6 82.5 85.6 94.7 119.1 175.8 291.8 514.9 939.9 1769.5 3469.1 SNR 0.092 0.289 0.911 2.845 8.673 24.795 62.352 133.599 254.481 456.079 790.098 1327.136 2140.731 max 52.8 56.7 69 108 231.2 621 1853.5 5750.9 18075.5 57049.6 180296.4 570037 1802505.1 51 SHALLOW4-6 307.4 counts 7.4 23.5 74.3 234.8 742.6 2348.4 7426.4 23484.3 74263.9 234843 742638.9 2348430.2 7426389 noise 77.5 77.6 78 79 82.2 91.6 116.7 174.1 290.8 514.3 939.6 1769.4 3469 SNR 0.096 0.302 0.952 2.972 9.032 25.624 63.652 134.865 255.359 456.593 790.375 1327.276 2140.796 max 52.8 56.7 69 108 231.2 621 1853.5 5750.9 18075.5 57049.6 180296.4 570037.1 1802505.4 52 SHALLOW2-7 339.2 counts 8.2 25.9 81.9 259.1 819.5 2591.4 8194.6 25913.7 81946.4 259137.1 819463.5 2591371.5 8194635.5 noise 90.5 90.6 90.9 91.9 95 104.1 128.8 187.3 308.5 543 991.8 1871.6 3683.6 SNR 0.091 0.286 0.901 2.82 8.63 24.902 63.614 138.356 265.638 477.198 826.237 1384.604 2224.606 max 58.3 62.6 76.2 119.2 255.2 685.2 2045.2 6345.8 19945.4 62951.3 198947.8 629006.4 1988971.4 53 MEDIUM2-4 339.2 counts 8.2 25.9 81.9 259.1 819.5 2591.4 8194.6 25913.7 81946.4 259137.1 819463.5 2591371.5 8194635.5 noise 103.9 104 104.3 105.1 107.8 116 138.6 194.2 312.8 545.6 993.2 1872.4 3684.1 SNR 0.079 0.249 0.786 2.465 7.599 22.349 59.109 133.418 261.977 474.998 825.046 1384.006 2224.332 max 58.3 62.6 76.2 119.2 255.2 685.2 2045.2 6345.8 19945.4 62951.3 198947.8 629006.4 1988971.4 54 SHALLOW4-7 360.4 counts 8.7 27.5 87.1 275.3 870.7 2753.3 8706.8 27533.3 87068 275333.2 870680 2753332 8706800 noise 74.8 75 75.4 76.6 80.5 91.7 120.5 184.8 313.2 557.7 1023.3 1936.5 3822.5 SNR 0.116 0.367 1.155 3.593 10.817 30.039 72.255 148.962 277.991 493.724 850.873 1421.842 2277.789 max 61.9 66.5 80.9 126.6 271.1 728 2173 6742.4 21192 66885.7 211382 668319.3 2113282 55 SHALLOW2-8 392.2 counts 9.5 30 94.7 299.6 947.5 2996.3 9475 29962.7 94750.5 299627.3 947504.6 2996273 9475048 noise 87.7 87.9 88.2 89.4 93 103.7 132 197.1 329.6 584.4 1072.2 2033 4027 SNR 0.108 0.341 1.074 3.351 10.185 28.898 71.781 152.012 287.442 512.676 883.69 1473.854 2352.855 max 67.4 72.3 88.1 137.8 295 792.3 2364.7 7337.3 23061.9 72787.4 230033.3 727288.6 2299748-15 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 56 MEDIUM8-4 402.8 counts 9.7 30.8 97.3 307.7 973.1 3077.3 9731.1 30772.5 97311.3 307725.3 973112.8 3077253.2 9731130 noise 80.9 81 81.4 82.7 86.7 98.3 128.5 196.3 332.1 591.5 1087.2 2063.9 4093.8 SNR 0.12 0.38 1.195 3.72 11.22 31.289 75.703 156.765 293.035 520.266 895.056 1490.968 2377.057 max 69.2 74.3 90.4 141.5 303 813.7 2428.7 7535.6 23685.2 74754.6 236250.5 746945.1 2361903.5 57 SHALLOW4-8 413.4 counts 10 31.6 99.9 315.8 998.7 3158.2 9987.2 31582.3 99872.1 315823.3 998721.1 3158233.5 9987215 noise 73.2 73.3 73.8 75.3 79.8 92.6 124.9 195.4 334.5 598.4 1102 2094.6 4160 SNR 0.136 0.431 1.353 4.195 12.521 34.119 79.971 161.617 298.596 527.757 906.25 1507.793 2400.794 max 71 76.2 92.8 145.2 311 835.1 2492.6 7733.9 24308.5 76721.9 242467.6 766601.6 2424058.8 58 SHALLOW2-9 445.2 counts 10.8 34 107.6 340.1 1075.5 3401.2 10755.5 34011.8 107554.6 340117.5 1075545.9 3401174.5 10755460 noise 85.7 85.9 86.3 87.7 91.9 104 135.6 206.8 349.8 623.6 1148.3 2186.5 4356.4 SNR 0.125 0.396 1.246 3.88 11.71 32.703 79.289 164.435 307.447 545.411 936.63 1555.547 2468.906 max 76.5 82.1 100 156.4 334.9 899.4 2684.3 8328.8 26178.4 82623.6 261118.9 825570.9 2610524.8 59 MEDIUM2-5 445.2 counts 10.8 34 107.6 340.1 1075.5 3401.2 10755.5 34011.8 107554.6 340117.5 1075545.9 3401174.5 10755460 noise 99.8 99.9 100.2 101.4 105.1 115.9 145 213.1 353.6 625.8 1149.6 2187.2 4356.8 SNR 0.108 0.341 1.073 3.353 10.236 29.354 74.184 159.582 304.135 543.495 935.614 1555.047 2468.681 max 76.5 82.1 100 156.4 334.9 899.4 2684.3 8328.8 26178.4 82623.6 261118.9 825570.9 2610524.8 60 DEEP2-3 445.2 counts 10.8 34 107.6 340.1 1075.5 3401.2 10755.5 34011.8 107554.6 340117.5 1075545.9 3401174.5 10755460 noise 109.1 109.2 109.5 110.6 114 124 151.6 217.7 356.5 627.4 1150.5 2187.7 4357.1 SNR 0.099 0.311 0.982 3.074 9.436 27.425 70.945 156.214 301.722 542.071 934.854 1554.672 2468.513 max 76.5 82.1 100 156.4 334.9 899.4 2684.3 8328.8 26178.4 82623.6 261118.9 825570.9 2610524.8 61 SHALLOW4-9 466.4 counts 11.3 35.6 112.7 356.3 1126.8 3563.1 11267.6 35631.4 112676.2 356313.6 1126762.4 3563135.5 11267625 noise 72.2 72.4 73 74.6 79.7 94 129.6 205.8 354.7 637 1176.8 2245.5 4484.4 SNR 0.156 0.492 1.545 4.774 14.135 37.888 86.973 173.175 317.632 559.326 957.506 1586.807 2512.613 max 80.1 86 104.7 163.9 350.9 942.2 2812.1 8725.4 27425 86558 273553.2 864883.8 2734835.5 62 SHALLOW2-10 498.2 counts 12 38.1 120.4 380.6 1203.6 3806.1 12035.9 38060.8 120358.7 380607.7 1203587 3806076.5 12035869 noise 84.3 84.5 85 86.5 91.2 104.8 139.6 216.4 369.2 660.9 1220.8 2333.5 4674.1 SNR 0.143 0.451 1.416 4.399 13.191 36.307 86.221 175.87 326.018 575.919 985.876 1631.053 2575.039 max 85.6 91.9 111.9 175 374.8 1006.4 3003.9 9320.4 29294.8 92459.7 292204.5 923853.1 2921301.5-16 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 63 MEDIUM8-5 508.8 counts 12.3 38.9 122.9 388.7 1229.2 3887.1 12291.9 38870.6 122919.5 388705.7 1229195.1 3887056.8 12291952 noise 77.9 78 78.6 80.3 85.5 100.1 136.7 215.9 371.6 667.3 1234.5 2362 4736.2 SNR 0.158 0.498 1.564 4.842 14.384 38.828 89.896 180.004 330.826 582.486 995.703 1645.683 2595.309 max 87.4 93.8 114.2 178.8 382.7 1027.8 3067.8 9518.7 29918.1 94426.9 298421.6 943509.5 2983456.8 64 DEEP8-3 508.8 counts 12.3 38.9 122.9 388.7 1229.2 3887.1 12292 38870.6 122919.5 388705.7 1229195.2 3887056.8 12291953 noise 82.9 83.1 83.6 85.2 90.1 104.1 139.7 217.9 372.7 668 1234.9 2362.2 4736.3 SNR 0.148 0.468 1.47 4.562 13.642 37.334 87.983 178.425 329.822 581.922 995.408 1645.54 2595.245 max 87.4 93.8 114.2 178.8 382.7 1027.8 3067.8 9518.7 29918.1 94426.9 298421.7 943509.6 2983457 65 SHALLOW4-10 519.4 counts 12.5 39.7 125.5 396.8 1254.8 3968 12548 39680.4 125480.4 396803.8 1254803.5 3968037.2 12548038 noise 71.8 72 72.6 74.5 80.1 95.9 134.4 215.8 374.1 673.8 1248.1 2390.3 4798 SNR 0.175 0.551 1.728 5.327 15.657 41.376 93.396 183.87 335.407 588.874 1005.352 1660.084 2615.249 max 89.2 95.8 116.6 182.5 390.7 1049.2 3131.7 9717 30541.4 96394.2 304638.8 963166.1 3045612.2 66 MEDIUM2-6 551.2 counts 13.3 42.1 133.2 421.1 1331.6 4211 13316.3 42109.8 133162.8 421097.9 1331628.1 4210977.5 13316284 noise 97 97.2 97.6 99.1 103.7 117.1 152.1 231.3 391 698.4 1291.4 2475.6 4982.3 SNR 0.137 0.433 1.364 4.248 12.838 35.957 87.543 182.078 340.543 602.951 1031.178 1700.968 2672.745 max 94.7 101.7 123.8 193.6 414.6 1113.5 3323.4 10311.9 32411.3 102295.8 323290.1 1022135.4 3232078.2 67 MEDIUM8-6 614.8 counts 14.8 47 148.5 469.7 1485.3 4696.9 14852.8 46968.6 148527.8 469686.1 1485277.8 4696860.5 14852778 noise 76.9 77.1 77.8 79.9 86.1 103.5 145.7 234.8 408 736.8 1369.9 2638.5 5340.2 SNR 0.193 0.609 1.909 5.879 17.244 45.387 101.97 200.053 364.036 637.477 1084.249 1780.14 2781.323 max 105.6 113.4 138 216 462.5 1242 3706.9 11501.7 36151.1 114099.2 360592.8 1140074.1 3605010.8 68 MEDIUM2-7 657.2 counts 15.9 50.2 158.8 502.1 1587.7 5020.8 15877.1 50207.8 158771.1 502078.2 1587710.4 5020782 15877105 noise 95.3 95.5 96.1 97.9 103.4 119.3 159.6 248.6 425.7 765.4 1422.6 2745 5573.7 SNR 0.167 0.526 1.652 5.127 15.349 42.094 99.454 201.928 372.926 656.006 1116.045 1829.043 2848.585 max 112.9 121.2 147.6 230.9 494.4 1327.6 3962.6 12294.9 38644.3 121968.1 385461.3 1218699.9 3853631.8 69 DEEP2-4 657.2 counts 15.9 50.2 158.8 502.1 1587.7 5020.8 15877.1 50207.8 158771.1 502078.2 1587710.4 5020782 15877105 noise 107.1 107.3 107.8 109.4 114.4 128.9 167 253.5 428.6 767 1423.6 2745.6 5574 SNR 0.148 0.468 1.473 4.588 13.878 38.944 95.065 198.071 370.407 654.583 1115.306 1828.69 2848.433 max 112.9 121.2 147.6 230.9 494.4 1327.6 3962.6 12294.9 38644.3 121968.1 385461.3 1218699.9 3853631.8-17 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 70 MEDIUM8-7 720.8 counts 17.4 55.1 174.1 550.7 1741.4 5506.7 17413.6 55066.6 174136 550666.4 1741360 5506664 17413600 noise 77.2 77.5 78.2 80.6 87.9 107.6 154.7 252.7 442 801.4 1496.2 2898.8 5915.3 SNR 0.226 0.711 2.226 6.828 19.819 51.166 112.568 217.93 393.994 687.17 1163.833 1899.634 2943.834 max 123.8 132.9 161.8 253.2 542.2 1456.1 4346 13484.8 42384 133771.5 422764 1336638.6 4226564 71 DEEP8-4 720.8 counts 17.4 55.1 174.1 550.7 1741.4 5506.7 17413.6 55066.6 174136 550666.4 1741360 5506664 17413600 noise 82.7 83 83.7 85.9 92.8 111.7 157.5 254.5 443 801.9 1496.6 2899 5915.4 SNR 0.211 0.664 2.081 6.407 18.773 49.314 110.529 216.41 393.073 686.665 1163.574 1899.511 2943.781 max 123.8 132.9 161.8 253.2 542.2 1456.1 4346 13484.8 42384 133771.5 422764 1336638.6 4226564 72 MEDIUM2-8 763.2 counts 18.4 58.3 184.4 583.1 1843.8 5830.6 18437.9 58305.9 184379.3 583058.6 1843793.4 5830586 18437932 noise 94.5 94.7 95.4 97.5 103.9 122.1 167.3 265.3 458.3 827.9 1545.8 2999.8 6139 SNR 0.195 0.616 1.933 5.98 17.743 47.768 110.185 219.804 402.315 704.232 1192.801 1943.646 3003.394 max 131.1 140.8 171.4 268.1 574.1 1541.8 4601.7 14278 44877.2 141640.4 447632.5 1415264.5 4475185.5 73 MEDIUM8-8 826.8 counts 20 63.2 199.7 631.6 1997.4 6316.5 19974.4 63164.7 199744.2 631646.7 1997442.1 6316467 19974430 noise 78.2 78.5 79.4 82.1 90.2 112.1 163.6 269.7 473.9 862 1615.5 3146.4 6467.7 SNR 0.255 0.805 2.517 7.695 22.147 56.336 122.09 234.212 421.484 732.759 1236.439 2007.524 3088.344 max 142 152.5 185.6 290.5 622 1670.2 4985.1 15467.8 48617 153443.8 484935.2 1533203.1 4848117.5 74 MEDIUM2-9 869.2 counts 21 66.4 210 664 2099.9 6640.4 20998.7 66403.9 209987.5 664038.9 2099875 6640388 20998756 noise 94.3 94.5 95.3 97.7 105 125.3 175.1 281.2 489.1 887 1662.4 3242.9 6683.6 SNR 0.223 0.702 2.204 6.797 20.007 53.012 119.957 236.15 429.371 748.652 1263.143 2047.641 3141.843 max 149.3 160.3 195.2 305.4 653.9 1755.9 5240.8 16261 51110.1 161312.7 509803.6 1611828.9 5096739 75 DEEP2-5 869.2 counts 21 66.4 210 664 2099.9 6640.4 20998.7 66403.9 209987.5 664038.9 2099875 6640388 20998756 noise 106.2 106.4 107.1 109.3 115.8 134.5 181.8 285.5 491.6 888.4 1663.2 3243.4 6683.8 SNR 0.198 0.624 1.96 6.077 18.132 49.367 115.489 232.583 427.151 747.428 1262.519 2047.349 3141.72 max 149.3 160.3 195.2 305.4 653.9 1755.9 5240.8 16261 51110.1 161312.7 509803.6 1611828.9 5096739 76 MEDIUM8-9 932.8 counts 22.5 71.3 225.4 712.6 2253.5 7126.3 22535.2 71262.7 225352.5 712627.1 2253524.8 7126271 22535250 noise 79.6 80 80.9 84 92.9 116.8 172.3 285.9 504.1 919.5 1728.9 3383.6 7001.6 SNR 0.283 0.891 2.784 8.489 24.266 61.026 130.794 249.261 447.012 775.045 1303.415 2106.1 3218.567 max 160.2 172 209.4 327.7 701.7 1884.4 5624.3 17450.9 54849.9 173116 547106.4 1729767.6 5469671-18 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 77 DEEP8-5 932.8 counts 22.5 71.3 225.4 712.6 2253.5 7126.3 22535.2 71262.7 225352.5 712627.1 2253524.8 7126271 22535250 noise 84.6 84.9 85.8 88.7 97.1 120.2 174.7 287.3 505 919.9 1729.2 3383.8 7001.7 SNR 0.266 0.84 2.627 8.038 23.198 59.28 129.024 248.006 446.27 774.644 1303.213 2106.006 3218.528 max 160.2 172 209.4 327.7 701.7 1884.4 5624.3 17450.9 54849.9 173116 547106.4 1729767.6 5469671 78 MEDIUM2-10 975.2 counts 23.6 74.5 235.6 745 2356 7450.2 23559.6 74501.9 235595.8 745019.2 2355957.2 7450192 23559580 noise 94.5 94.8 95.7 98.3 106.4 128.7 182.7 296.5 518.3 943.1 1773.7 3476.5 7211 SNR 0.249 0.786 2.463 7.576 22.14 57.871 128.946 251.28 454.547 789.972 1328.253 2143.026 3267.159 max 167.5 179.9 219 342.6 733.6 1970 5879.9 18244.1 57343.1 180984.9 571974.8 1808393.2 5718292.5 79 MEDIUM8-10 1038.8 counts 25.1 79.4 251 793.6 2509.6 7936.1 25096.1 79360.7 250960.7 793607.6 2509607 7936074.5 25096076 noise 81.4 81.7 82.8 86.1 95.7 121.5 180.7 301.4 532.9 974.2 1837.6 3612.2 7520.2 SNR 0.308 0.971 3.031 9.22 26.212 65.332 138.854 263.319 470.931 814.598 1365.728 2196.999 3337.146 max 178.4 191.6 233.2 365 781.4 2098.5 6263.4 19433.9 61082.9 192788.3 609277.6 1926332.1 6091224.5 80 DEEP2-6 1081.2 counts 26.1 82.6 261.2 826 2612 8260 26120.4 82599.9 261204 825999.5 2612040 8259995 26120400 noise 106.4 106.6 107.5 110.2 118.2 140.7 196.2 314.9 548.4 998 1881.2 3702.3 7724.3 SNR 0.246 0.775 2.43 7.499 22.1 58.695 133.137 262.292 476.278 827.683 1388.478 2231.017 3381.577 max 185.7 199.4 242.8 379.8 813.3 2184.1 6519 20227.2 63576 200657.2 634145.9 2004957.6 6339845.5 81 DEEP8-6 1144.8 counts 27.7 87.5 276.6 874.6 2765.7 8745.9 27656.9 87458.8 276568.9 874587.7 2765689.5 8745878 27656896 noise 87.5 87.9 88.9 92.3 102.3 129 190.8 317.4 561.1 1027.1 1942.3 3833.6 8025.8 SNR 0.316 0.996 3.11 9.473 27.039 67.816 144.934 275.553 492.912 851.525 1423.943 2281.37 3446.003 max 196.6 211.1 257 402.2 861.2 2312.6 6902.5 21417 67315.8 212460.6 671448.7 2122896.5 6712778 82 DEEP2-7 1293.2 counts 31.2 98.8 312.4 988 3124.2 9879.6 31242 98796 312420.5 987960.4 3124204.5 9879604 31242048 noise 107.4 107.7 108.7 111.9 121.3 147.3 210.1 342.3 600.7 1098.9 2083.6 4133.4 8715.1 SNR 0.291 0.917 2.873 8.831 25.757 67.058 148.712 288.629 520.052 899.021 1499.4 2390.184 3584.804 max 222.1 238.5 290.4 454.3 972.8 2612.4 7797.3 24193.3 76041.9 240001.8 758488.4 2398087 7582953.5 83 DEEP8-7 1356.8 counts 32.8 103.6 327.8 1036.5 3277.8 10365.5 32778.5 103654.8 327785.4 1036548.5 3277854 10365486 32778542 noise 91 91.4 92.6 96.5 107.7 137.6 206.1 345.2 612.9 1126.2 2141 4257.8 9004.3 SNR 0.36 1.134 3.538 10.744 30.422 75.322 159.055 300.253 534.846 920.364 1530.996 2434.449 3640.323 max 233 250.3 304.6 476.7 1020.7 2740.9 8180.8 25383.1 79781.7 251805.1 795791.1 2516025.5 7955885.5-19 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 84 DEEP2-8 1505.2 counts 36.4 115 363.7 1149.9 3636.4 11499.2 36363.7 114992.1 363636.9 1149921.1 3636369.2 11499208 36363692 noise 109.1 109.4 110.6 114.2 124.9 154.1 223.5 368 649.6 1193.3 2274.2 4543.2 9668.1 SNR 0.334 1.051 3.288 10.071 29.115 74.609 162.707 312.46 559.812 963.631 1598.991 2531.067 3761.204 max 258.5 277.6 338 528.8 1132.3 3040.7 9075.5 28159.4 88507.8 279346.3 882830.6 2791215.8 8826060 85 DEEP8-8 1568.8 counts 37.9 119.8 379 1198.5 3790 11985.1 37900.2 119850.9 379001.9 1198509.4 3790018.5 11985092 37900192 noise 94.8 95.2 96.6 100.9 113.3 146.1 220.5 371.3 661.2 1219.2 2328.6 4662.3 9947.6 SNR 0.4 1.259 3.923 11.883 33.449 82.061 171.86 322.817 573.189 983.036 1627.585 2570.65 3809.985 max 269.5 289.4 352.3 551.2 1180.1 3169.2 9459 29349.2 92247.6 291149.7 920133.4 2909154.5 9198992 86 DEEP2-9 1717.2 counts 41.5 131.2 414.9 1311.9 4148.5 13118.8 41485.4 131188.2 414853.4 1311881.5 4148534.2 13118818 41485344 noise 111.2 111.6 112.9 116.9 128.8 161 236.4 392.4 695.6 1282.5 2455.2 4936.2 10591 SNR 0.373 1.176 3.675 11.221 32.203 81.489 175.473 334.351 596.425 1022.935 1689.668 2657.701 3917.041 max 295 316.7 385.6 603.3 1291.8 3468.9 10353.8 32125.5 100973.7 318690.9 1007173.1 3184344.8 10069167 87 DEEP8-9 1780.8 counts 43 136 430.2 1360.5 4302.2 13604.7 43021.8 136047 430218.4 1360470 4302183.5 13604698 43021840 noise 98.7 99.2 100.7 105.3 118.8 154.2 234.3 395.8 706.8 1307.2 2507.3 5050.8 10862.6 SNR 0.436 1.372 4.273 12.917 36.199 88.212 183.649 343.702 608.675 1040.786 1715.852 2693.55 3960.533 max 305.9 328.5 399.9 625.6 1339.6 3597.4 10737.2 33315.3 104713.5 330494.2 1044475.8 3302283.5 10442099 88 DEEP2-10 1929.2 counts 46.6 147.4 466.1 1473.8 4660.7 14738.4 46607 147384.2 466069.9 1473842.4 4660698 14738423 46607000 noise 113.6 114.1 115.5 119.9 133 167.8 248.9 415.5 739.2 1367.3 2628.5 5315.2 11489.2 SNR 0.41 1.292 4.034 12.288 35.055 87.814 187.256 354.686 630.487 1077.921 1773.106 2772.864 4056.58 max 331.4 355.8 433.2 677.8 1451.2 3897.2 11632 36091.6 113439.6 358035.4 1131515.4 3577473.8 11312274 89 DEEP8-10 1992.8 counts 48.1 152.2 481.4 1522.4 4814.3 15224.3 48143.5 152243 481434.8 1522430.6 4814348 15224306 48143476 noise 102.7 103.2 104.8 109.8 124.3 162.1 247.4 419.1 750.1 1391 2678.6 5426.3 11754.3 SNR 0.469 1.475 4.593 13.864 38.725 93.898 194.627 363.221 641.818 1094.492 1797.305 2805.659 4095.805 max 342.3 367.6 447.5 700.1 1499.1 4025.7 12015.5 37281.4 117179.4 369838.8 1168818.1 3695412.5 11685206 90 DEEP2-11 2141.2 counts 51.7 163.6 517.3 1635.8 5172.8 16358 51728.6 163580.3 517286.3 1635802.9 5172863 16358031 51728640 noise 116.3 116.8 118.4 123.2 137.2 174.6 260.9 437.7 780.9 1448.5 2795.3 5682.7 12366.8 SNR 0.445 1.4 4.37 13.283 37.701 93.679 198.239 373.74 662.429 1129.306 1850.525 2878.567 4182.865 max 367.8 394.9 480.8 752.2 1610.7 4325.5 12910.3 40057.7 125905.5 397380 1255857.6 3970602.5 12555381-20 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 91 DEEP8-11 2204.8 counts 53.3 168.5 532.7 1684.4 5326.5 16843.9 53265.1 168439.1 532651.2 1684391.6 5326512.5 16843910 53265136 noise 106.6 107.2 108.9 114.3 129.7 169.8 259.9 441.4 791.5 1471.3 2843.8 5790.7 12626.3 SNR 0.5 1.571 4.89 14.743 41.073 99.207 204.938 381.603 672.993 1144.802 1873.053 2908.811 4218.572 max 378.7 406.7 495.1 774.6 1658.6 4454 13293.7 41247.5 129645.2 409183.3 1293160.5 4088541.5 12928313 92 DEEP2-12 2353.2 counts 56.8 179.8 568.5 1797.8 5685 17977.6 56850.3 179776.4 568502.8 1797763.6 5685027 17977638 56850284 noise 119.2 119.7 121.4 126.5 141.5 181.3 272.6 458.9 820.9 1526.6 2956.6 6040.2 13226.7 SNR 0.477 1.502 4.684 14.212 40.172 99.157 208.555 391.719 692.572 1177.629 1922.842 2976.315 4298.15 max 404.2 434 528.4 826.7 1770.2 4753.7 14188.5 44023.8 138371.4 436724.5 1380200 4363731.5 13798488 93 DEEP8-12 2416.8 counts 58.4 184.7 583.9 1846.4 5838.7 18463.5 58386.8 184635.2 583867.8 1846352 5838677 18463522 58386776 noise 110.6 111.2 113 118.6 134.9 177.2 272 462.7 831.1 1548.7 3003.5 6145.5 13481.4 SNR 0.528 1.661 5.166 15.563 43.271 104.204 214.689 399.017 702.487 1192.206 1943.942 3004.393 4330.904 max 415.1 445.8 542.7 849.1 1818 4882.2 14572 45213.6 142111.1 448527.9 1417502.8 4481670.5 14171420 94 DEEP2-13 2565.2 counts 61.9 195.9 619.7 1959.7 6197.2 19597.2 61971.9 195972.4 619719.2 1959724.6 6197193 19597244 61971940 noise 122.1 122.7 124.5 129.9 145.9 187.9 283.9 479.4 859.3 1602 3113 6389.1 14071.2 SNR 0.507 1.597 4.978 15.084 42.489 104.308 218.308 408.776 721.165 1223.309 1990.767 3067.27 4404.155 max 440.6 473.1 576 901.2 1929.7 5182 15466.7 47989.9 150837.3 476069.1 1504542.5 4756861 15041596 95 DEEP8-13 2628.8 counts 63.5 200.8 635.1 2008.3 6350.9 20083.1 63508.4 200831.3 635084.2 2008312.6 6350841.5 20083128 63508420 noise 114.5 115.1 117 122.9 140.1 184.4 283.6 483.2 869.4 1623.4 3158.6 6492.1 14321.8 SNR 0.555 1.745 5.426 16.335 45.343 108.937 223.962 415.594 730.521 1237.089 2010.63 3093.481 4434.395 max 451.5 484.9 590.3 923.6 1977.5 5310.5 15850.2 49179.7 154577 487872.5 1541845.1 4874799.5 15414527 96 DEEP2-14 2777.2 counts 67.1 212.2 671 2121.7 6709.4 21216.9 67093.6 212168.6 670935.9 2121685.2 6709357.5 21216850 67093580 noise 125.2 125.8 127.6 133.4 150.2 194.3 294.8 499.2 896.5 1675 3265.1 6730.5 14902.3 SNR 0.536 1.687 5.257 15.906 44.674 109.179 227.576 425.034 748.404 1266.679 2054.865 3152.346 4502.221 max 477 512.2 623.6 975.7 2089.2 5610.3 16745 51956 163303.2 515413.7 1628884.9 5149990 16284703 97 DEEP8-14 2840.8 counts 68.6 217 686.3 2170.3 6863 21702.7 68630.1 217027.3 686300.8 2170273.5 6863007.5 21702736 68630072 noise 118.3 119 121 127.2 145.1 191.3 294.8 503 906.3 1695.8 3309.6 6831.4 15149.2 SNR 0.58 1.824 5.672 17.065 47.31 113.443 232.817 431.44 757.273 1279.76 2073.643 3176.931 4530.292 max 487.9 524 637.9 998 2137 5738.7 17128.5 53145.9 167042.9 527217.1 1666187.6 5267929 16657636-21 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 98 DEEP2-15 2989.2 counts 72.2 228.4 722.2 2283.7 7221.5 22836.5 72215.2 228364.6 722152.1 2283646 7221521.5 22836458 72215224 noise 128.2 128.9 130.8 136.9 154.5 200.7 305.4 518.3 932.5 1745.9 3413.5 7065.1 15721.5 SNR 0.563 1.772 5.52 16.684 46.744 113.807 236.423 440.589 774.446 1308.006 2115.591 3232.28 4593.416 max 513.4 551.3 671.2 1050.2 2248.6 6038.5 18023.2 55922.1 175769 554758.2 1753227.1 5543118.5 17527808 99 DEEP8-15 3052.8 counts 73.7 233.2 737.5 2332.2 7375.2 23322.3 73751.7 233223.4 737517.1 2332234 7375172.5 23322342 73751728 noise 122.1 122.8 124.9 131.3 149.9 198.1 305.6 522.2 942 1766.2 3457 7164.1 15965 SNR 0.604 1.9 5.906 17.76 49.184 117.752 241.308 446.637 782.888 1320.469 2133.409 3255.434 4619.598 max 524.4 563.1 685.5 1072.5 2296.5 6167 18406.7 57112 179508.8 566561.6 1790529.9 5661057.5 17900742 100 DEEP2-16 3201.2 counts 77.4 244.6 773.4 2445.6 7733.7 24456.1 77336.9 244560.7 773368.8 2445606.8 7733686.5 24456064 77336864 noise 131.3 132 134 140.4 158.8 206.9 315.8 536.9 967.4 1814.9 3558.5 7393.7 16529.9 SNR 0.589 1.853 5.77 17.424 48.712 118.223 244.9 455.522 799.422 1347.511 2173.32 3307.674 4678.605 max 549.8 590.4 718.8 1124.7 2408.1 6466.8 19301.5 59888.2 188234.9 594102.8 1877569.4 5936247.5 18770916 101 DEEP8-16 3264.8 counts 78.9 249.4 788.7 2494.2 7887.3 24941.9 78873.4 249419.5 788733.7 2494195.2 7887337 24941948 78873368 noise 125.8 126.5 128.7 135.4 154.7 204.6 316.2 540.7 976.8 1834.7 3601.1 7491.1 16770.4 SNR 0.627 1.972 6.129 18.424 50.979 121.888 249.474 461.254 807.485 1359.423 2190.281 3329.557 4703.126 max 560.8 602.2 733.1 1147 2456 6595.3 19684.9 61078.1 191974.7 605906.1 1914872.4 6054187 19143850 102 DEEP2-17 3413.2 counts 82.5 260.8 824.6 2607.6 8245.9 26075.7 82458.5 260756.7 824585.2 2607568 8245852 26075674 82458528 noise 134.4 135.1 137.3 143.8 163 212.9 325.9 554.9 1001.4 1882.2 3700.4 7716.9 17328.7 SNR 0.613 1.93 6.008 18.128 50.591 122.452 253.048 469.896 823.44 1385.38 2228.363 3379.026 4758.5 max 586.3 629.5 766.4 1199.1 2567.6 6895.1 20579.7 63854.4 200700.8 633447.3 2001911.9 6329377 20014024 103 DEEP8-17 3476.8 counts 84 265.6 839.9 2656.1 8399.5 26561.5 83995 265615.6 839950.1 2656155.8 8399501 26561552 83995024 noise 129.4 130.1 132.4 139.3 159.4 211 326.4 558.8 1010.6 1901.6 3742.2 7812.7 17566.5 SNR 0.649 2.041 6.343 19.061 52.702 125.87 257.348 475.35 831.163 1396.795 2244.553 3399.773 4781.549 max 597.2 641.3 780.7 1221.5 2615.4 7023.5 20963.2 65044.2 204440.6 645250.7 2039214.6 6447315.5 20386956 104 DEEP2-18 3625.2 counts 87.6 276.9 875.8 2769.5 8758 27695.3 87580.1 276952.8 875801.7 2769529 8758017 27695280 87580168 noise 137.5 138.2 140.5 147.3 167.2 218.9 335.7 572.5 1034.5 1947.9 3839.6 8035.2 18118.7 SNR 0.637 2.003 6.235 18.802 52.391 126.516 260.901 483.768 846.59 1421.768 2280.984 3446.754 4833.691 max 622.7 668.6 814 1273.6 2727.1 7323.3 21858 67820.5 213166.7 672791.9 2126254.2 6722506 21257132-22 -
# Readout Comb. time(s) 1nJy 3.16nJy 10nJy 31.6nJy 100nJy 316nJy 1uJy 3.16uJy 10uJy 31.6uJy 100uJy 316uJy 1mJy 105 DEEP8-18 3688.8 counts 89.2 281.8 891.2 2818.1 8911.7 28181.2 89116.7 281811.7 891166.5 2818116.2 8911668 28181164 89116664 noise 133 133.7 136.1 143.2 163.9 217.3 336.3 576.3 1043.5 1967 3880.6 8129.6 18354 SNR 0.67 2.108 6.549 19.675 54.363 129.715 264.96 488.973 854.007 1432.733 2296.477 3466.48 4855.428 max 633.6 680.4 828.3 1296 2774.9 7451.8 22241.4 69010.3 216906.5 684595.2 2163557 6840444.5 21630064 106 DEEP2-19 3837.2 counts 92.7 293.1 927 2931.5 9270.2 29314.9 92701.8 293148.9 927018.2 2931488.8 9270181 29314884 92701832 noise 140.6 141.3 143.6 150.7 171.3 224.8 345.3 589.6 1066.8 2012.3 3976.2 8348.9 18900.7 SNR 0.659 2.074 6.453 19.449 54.121 130.432 268.49 497.181 868.949 1456.806 2331.406 3511.215 4904.677 max 659.1 707.7 861.6 1348.1 2886.6 7751.6 23136.2 71786.6 225632.6 712136.4 2250596.5 7115635 22500238 107 DEEP8-19 3900.8 counts 94.3 298 942.4 2980.1 9423.8 29800.8 94238.3 298007.8 942383.1 2980077.2 9423830 29800768 94238328 noise 136.5 137.2 139.7 147.1 168.4 223.3 346 593.4 1075.7 2030.9 4016.5 8442.1 19133.8 SNR 0.691 2.171 6.748 20.266 55.967 133.434 272.333 502.164 876.089 1467.362 2346.265 3530.016 4925.236 max 670 719.5 875.9 1370.4 2934.4 7880.1 23519.7 72976.4 229372.4 723939.8 2287899.2 7233573.5 22873172 108 DEEP2-20 4049.2 counts 97.8 309.3 978.2 3093.4 9782.3 30934.5 97823.4 309344.9 978234.5 3093449.2 9782344 30934492 97823464 noise 143.7 144.4 146.8 154.1 175.4 230.5 354.6 606.3 1098.4 2075.3 4110.5 8658.5 19675.3 SNR 0.681 2.142 6.663 20.071 55.787 134.214 275.837 510.178 890.585 1490.61 2379.822 3572.711 4971.88 max 695.5 746.8 909.2 1422.6 3046 8179.9 24414.4 75752.7 238098.5 751480.9 2374938.8 7508763.5 23743344 109 DEEP8-20 4112.8 counts 99.4 314.2 993.6 3142.1 9936 31420.4 99359.9 314203.8 993599.4 3142037.8 9935995 31420372 99359968 noise 139.9 140.7 143.2 150.8 172.7 229.3 355.5 610.2 1107.1 2093.6 4150.2 8750.6 19906.3 SNR 0.71 2.233 6.939 20.837 57.519 137.04 279.488 514.959 897.473 1500.791 2394.102 3590.67 4991.375 Max 706.4 758.6 923.5 1444.9 3093.9 8308.3 24797.9 76942.5 241838.2 763284.2 241241.5 7626702 24116276-23 -
Figure 1 Signal-to-Noise ratio vs. time estimated for the F200W filter. Dots indicate values corresponding to source saturation. Units to the right are njy. 5.0 Optimal readout combinations Having calculated all signal-to-noise values, I have extracted, for each filter and source brightness, the optimal readout combinations in the following way: 1) If a certain integration time is degenerate, i.e. if it can be achieved with more than one readout combination, the optimal readout combination is the one providing the highest signal-to-noise; if equal, I select the readout combination providing the largest number of groups (i.e. the more robust against cosmic rays). 2) If the signal-to-noise reached in a given time is lower than the signal-to-noise reached in a shorter time, that readout combination is not optimal. 3) If the source saturates, that readout combination is not optimal. Using these criteria a large number of readout combinations can be dropped. As an example, I show in Table 5 the equivalent of Table 4, limited to the signal-to-noise estimates, after the non-optimal readout combinations have been removed. - 24 -