MIPS IOC Data Volumes

MIPS IOC Data Volume Estimate Last modified: 18-Sep-99
Total Data Compressed Uncompressed Uncompressed Data Rate Uncompressed Uncompressed
IOC-MIPS_ Name Tot Time Tot Time DCEs Groups EXP Mode DATA (bits) DATA (bits) DATA (Mbytes) Volume/time Max data (bits) Max data (Mbytes) Notes
(sec) (hrs) (est) (est) (sec) (est) (est) (est) (kbs -- est) (upper limit) (upper limit)
1 100a First light 1200 0.33 120 3 40 10 SUR 3.7916E+07 7.5640E+07 9.46 63.03 7.9450E+08 99.31
2 110a Confirmation of on-board data processing 3600 1.00 288 1 96 all both 2.9710E+08 5.9374E+08 74.22 164.93 2.3835E+09 297.94
algorithms
3 105a On-board S/W: Command 900 0.25 72 3 24 10 both 5.1061E+07 1.0201E+08 12.75 113.34 5.9587E+08 74.48
expansion and data manipulation
4 355a Cluster option validation 2700 0.75 300 1 100 10 SUR 9.4790E+07 1.8910E+08 23.64 70.04 1.7876E+09 223.45
5 345a Opt temp for 24 um array 5400 1.50 990 1 330 10,30 RAW 2.1812E+09 4.3608E+09 545.09 807.55 3.5752E+09 446.90 RAW mode requires Observatory waits not counted here.
6 115a Detector response to Stims -- 24 um 1200 0.33 60 1 20 10 SUR 1.8958E+07 3.7820E+07 4.73 31.52 7.9450E+08 99.31
7 247a Detector response to Stims -- 70 and 160 um 2400 0.67 120 2 40 10 SUR 3.7916E+07 7.5640E+07 9.46 31.52 1.5890E+09 198.62
8 120a Calibration of Stims against celestial standards 24 um 1800 0.50 285 1 95 3 SUR 4.4767E+07 8.9078E+07 11.13 49.49 1.1917E+09 148.97
9 350a Calib of Stims against celestial standards 70 & 160 um 5400 1.50 2580 2 860 3 SUR 4.0526E+08 7.9814E+08 99.77 147.80 3.5752E+09 446.90
10 125a Transfer function test 10800 3.00 450 1 150 30,10 SUR 2.1028E+08 4.1984E+08 52.48 38.87 7.1505E+09 893.81
11 130a 24 um and 70 um array 5400 1.50 1080 1 360 10 SUR 3.4125E+08 6.8076E+08 85.10 126.07 3.5752E+09 446.90
geometries and scan mirror vectors
12 135a SED of CSE 1200 0.33 288 1 96 10 SUR 9.0999E+07 1.8154E+08 22.69 151.28 7.9450E+08 99.31
13 140a SED slit profile 2400 0.67 540 1 180 10 SUR 1.7062E+08 3.4038E+08 42.55 141.83 1.5890E+09 198.62
14 145a SED wavelength cal 900 0.25 108 1 36 10 SUR 3.4125E+07 6.8076E+07 8.51 75.64 5.9587E+08 74.48
15 160a Anneal frequency 11880 3.30 3000 1 1000 10 SUR 9.4790E+08 1.8910E+09 236.38 159.18 7.8655E+09 983.19 Might be able to piggy back on other tests
16 150a Determination of radiometric throughput 24 um 3600 1.00 702 1 234 10 SUR 2.2181E+08 4.4250E+08 55.31 122.92 2.3835E+09 297.94
17 205a Determination of radiometric throughput 70 & 160 um 7200 2.00 1500 1 500 10 SUR 4.7395E+08 9.4550E+08 118.19 131.32 4.7670E+09 595.87
18 010a Detector aliveness check 3600 1.00 90 3 30 3 RAW 2.9866E+07 5.9587E+07 7.45 16.55 2.3835E+09 297.94
19 155a Latent images and saturation behavior 24 um 1200 0.33 144 1 48 10 SUR 4.5499E+07 9.0768E+07 11.35 75.64 7.9450E+08 99.31
20 210a Latent images and saturation behavior 2400 0.67 192 1 64 10 SUR 6.0666E+07 1.2102E+08 15.13 50.43 1.5890E+09 198.62
21 220a Slew state validation 1800 0.50 324 3 108 10 SUR 1.0237E+08 2.0423E+08 25.53 113.46 1.1917E+09 148.97
22 225a Instrument stability 11880 3.30 3000 3 1000 10 SUR 9.4790E+08 1.8910E+09 236.38 159.18 7.8655E+09 983.19
23 230a Effect of bias and integration times on sensitivity 5100 1.42 96 1 32 10 SUR 3.0333E+07 6.0512E+07 7.56 11.87 3.3766E+09 422.08
24 235a 160 um array geometry 600 0.17 144 1 48 10 SUR 4.5499E+07 9.0768E+07 11.35 151.28 3.9725E+08 49.66
25 240a Spectral leak checks 4080 1.13 720 1 240 10 SUR 2.2750E+08 4.5384E+08 56.73 111.24 2.7013E+09 337.66
26 245a Optimum bias setting 10800 3.00 1695 1 565 30,10 SUR 5.6961E+08 1.1365E+09 142.06 105.23 7.1505E+09 893.81
27 250a Cosmic ray limits on integration times 1320 0.37 144 1 48 10 SUR 4.5499E+07 9.0768E+07 11.35 68.76 8.7395E+08 109.24
28 255a Radiometry tests 43200 12.00 9720 3 3240 all SUR 3.0712E+09 6.1269E+09 765.86 141.83 2.8602E+10 3575.23 6 x 2hr sessions
29 260a Read noise and dark current and stability #1 32400 9.00 11700 1 3900 all both 3.9759E+09 7.9331E+09 991.64 244.85 2.1451E+10 2681.42
30 261a Read noise and dark current and stability #2 32400 9.00 11700 1 3900 all both 3.9759E+09 7.9331E+09 991.64 244.85 2.1451E+10 2681.42
31 262a Read noise and dark current and stability #3 32400 9.00 11700 1 3900 all both 3.9759E+09 7.9331E+09 991.64 244.85 2.1451E+10 2681.42
32 265a Scan to determine confusion limits 7200 2.00 1680 3 560 10 SUR 5.3083E+08 1.0590E+09 132.37 147.08 4.7670E+09 595.87
33 270a Total power at Ecliptic Pole 2400 0.67 180 1 60 10 RAW 1.9843E+08 3.9658E+08 49.57 165.24 1.5890E+09 198.62
34 275a Photometry of a CSE 2700 0.75 288 1 96 10,30 SUR 1.1279E+08 2.2512E+08 28.14 83.38 1.7876E+09 223.45 Can be an ERO
35 280a Super Res of SVS-13 3600 1.00 2160 1 720 3 SUR 3.3929E+08 6.7512E+08 84.39 187.53 2.3835E+09 297.94 Can be an ERO
36 285a Scan map of a PN or SNR 9000 2.50 2520 3 840 10 SUR 7.9624E+08 1.5884E+09 198.56 176.49 5.9587E+09 744.84 Can be an ERO
37 290a Scan map of HH 7-11 region 10800 3.00 8640 3 2880 3 SUR 1.3571E+09 2.7005E+09 337.56 250.04 7.1505E+09 893.81 Can be an ERO
38 295a Scan map of M31 or M33 30600 8.50 20634 3 6878 4 SUR 3.7095E+09 7.3860E+09 923.25 241.37 2.0260E+10 2532.46 Can be an ERO
39 300a SED AOT validation 5400 1.50 765 1 255 all SUR 2.4172E+08 4.8221E+08 60.28 89.30 3.5752E+09 446.90
40 305a Pipeline quality flatfields 12600 3.50 3792 3 1264 10 SUR 1.1982E+09 2.3902E+09 298.78 189.70 8.3422E+09 1042.78
41 310a Off-axis glints 54000 15.00 16680 1 5560 4 SUR 2.9987E+09 5.9706E+09 746.33 110.57 3.5752E+10 4469.04
42 315a Behavior as a function of sky background 10800 3.00 1566 3 522 10 SUR 4.9481E+08 9.8711E+08 123.39 91.40 7.1505E+09 893.81
43 320a Phot/SR AOT validation 7200 2.00 1620 1 540 all SUR 5.1187E+08 1.0211E+09 127.64 141.83 4.7670E+09 595.87
44 325a Scan AOT validation 34200 9.50 7776 3 2592 all SUR 2.4570E+09 4.9015E+09 612.69 143.32 2.2643E+10 2830.39
45 330a Total power AOT validation 2520 0.70 1050 1 350 all RAW 4.2029E+08 8.3890E+08 104.86 332.90 1.6684E+09 208.56
46 335a Point spread functions 12600 3.50 3672 1 1224 10 SUR 1.1602E+09 2.3146E+09 289.32 183.70 8.3422E+09 1042.78
47 340a Ultimate scattered light levels 36000 10.00 7380 1 2460 10,30 SUR 2.6996E+09 5.3873E+09 673.41 149.65 2.3835E+10 2979.36
48 045a Bias level commanding --- --- 0 --- --- --- 0.0000E+00 0.0000E+00 0.00 Can be done with sensitivity task
49 015a CE state validation 3600 1.00 0 --- --- none RT telemetry 0.00 0.00 2.3835E+09 297.94
50 020a Command and data paths 3600 1.00 0 --- --- none RT telemetry 0.00 0.00 2.3835E+09 297.94
51 005a Electronics live tests 3600 1.00 0 --- --- none RT telemetry 0.00 0.00 2.3835E+09 297.94
52 035a CE EEPROM test 900 0.25 0 --- --- none RT telemetry 0.00 0.00 5.9587E+08 74.48
53 025a Scan mirror operational test 60 0.02 0 --- --- none RT telemetry 0.00 0.00 3.9725E+07 4.97
54 030a Heaters, temp sensors 300 0.08 0 --- --- none RT telemetry 0.00 0.00 1.9862E+08 24.83
55 040a Engineering and data acquistion 300 0.08 48 3 16 10 RAW 5.2915E+07 1.0575E+08 13.22 352.51 1.9862E+08 24.83
56 050a Scattered backgrd monitor #1 3600 1.00 120 3 40 3 BOTH 1.9480E+07 3.8768E+07 4.85 10.77 2.3835E+09 297.94
57 055a Scattered backgrd monitor #2 3600 1.00 120 3 40 3 BOTH 1.9480E+07 3.8768E+07 4.85 10.77 2.3835E+09 297.94
58 060a Scattered backgrd monitor #3 3600 1.00 120 3 40 3 BOTH 1.9480E+07 3.8768E+07 4.85 10.77 2.3835E+09 297.94
59 065a Scattered backgrd monitor #4 3600 1.00 120 3 40 3 BOTH 1.9480E+07 3.8768E+07 4.85 10.77 2.3835E+09 297.94
60 070a Scattered backgrd monitor #5 3600 1.00 120 3 40 3,10 BOTH 2.4242E+07 4.8292E+07 6.04 13.41 2.3835E+09 297.94
61 Misc new or forgotten tasks 21600 6.00 1.4301E+10 1787.62 Placeholder
(eg 4 sec darks, scan speed optimization)
Totals: 1.4490E+05 4.2145E+10 8.4050E+10 10506.27 3.6066E+11 45082.68
Prime DCEs = 7.4867E+04
Notes: These data volumes are estimates only. 16 bit quantization used. DG = Data Group Header size per DG = 4800 bits -- this is approximate because data is grouped in a way that is not always equal to a DG. Header goes with the data group

Compression factor is applied to pixel data only, not header, and is assumed to be 0.5.

Max data is for highest data collection rate for total time estimated for task. It is an upper limit of data for the task

Maximum data rate estimate = Raw mode and 3 second exposures.

H = header volume

C = compression factor

t(exp) = exposure time (seconds)
Data rates used: = (128x128x2 + 32x32x8 + 20x2x8)x16xCxt(exp) + H
Raw data for 1 DG =660,480xCxt(exp) + 4800 bits per DG
= [128x128x2 + (32x32x8 + 20x2x8)xt(exp)]x16xC + H
SUR data for 1 DG = [524,288 + 136,192xt(exp)]xC + 4800 bits per DG
Si:As array is sampled at 2 Hz; the Ge:Ga arrays are sampled at 8 Hz maximum (co-addition of samples is possible and will reduce data rate)
Prepared by:
William B. Latter
SSC/MIPS Instrument Scientist


Last Updated on 11/16/99
By Marcia Rieke
Email: mrieke@as.arizona.edu