ACIS
ACIS DOSE Registered-Photon-Map
The steps we took to compute the dose map are;
- Level 1 Event files for a specified month are obtained from archive.
- Image data including I2, I3, S2, S3 CCDs are extracted from all event files.
- All the extracted image data were merged to create a month long exposure map for the month.
- The exposure map is opened with ds9, and check a distribution of count rates against energy. From this, estimate the upper threshold value. Any events beyond this upper threshold are assumed erroneous events such as bad pixels.
- Using this upper threshold, the data is filtered, and create a cleaned exposure map for the month.
- The exposure map from each month from the Sep 1999 is added up to create a cumulative exposure map for each month.
- Using fimgstatistic, we compute count rate statistics for each CCDs.
- For observations with high data drop rates (e.g., Crab nebula, Cas A), we corrected the observations by adding events.
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Note: Counts and RMS's of Cumulative maps are lower than the previous months.
This is because we excluded extreme outliers.
Please check more detail plots at Telemetered Photon Dose Trend page.
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Statistics: # IMAGE NPIX MEAN RMS MIN MAX ACIS_jul10 6004901 12.19 20.50 0.0 630.0 I2 node 0 262654 10.019173 3.921170 0.0 56.0 I2 node 1 262654 10.649763 4.450598 0.0 310.0 I2 node 2 262654 10.508133 3.979009 0.0 71.0 I2 node 3 262654 10.362095 4.255780 0.0 56.0 I3 node 0 262654 10.476803 4.062869 0.0 58.0 I3 node 1 262654 11.203747 10.918778 0.0 249.0 I3 node 2 262654 10.207802 3.860713 0.0 67.0 I3 node 3 262654 10.227364 3.938219 0.0 159.0 S2 node 0 262654 15.200536 9.259330 0.0 96.0 S2 node 1 262654 17.466667 15.521045 0.0 209.0 S2 node 2 262654 23.463369 30.859105 0.0 298.0 S2 node 3 262654 22.956867 26.536351 0.0 624.0 S3 node 0 262654 19.934019 23.894296 0.0 330.0 S3 node 1 262654 23.368577 23.114855 0.0 233.0 S3 node 2 262654 25.193907 27.766904 0.0 265.0 S3 node 3 262654 24.456240 32.490291 0.0 304.0
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Statistics: IMAGE NPIX MEAN RMS MIN MAX ACIS_total 6004901 1415.90 1906.54 0.0 86209.0 I2 node 0 262654 1152.917164 219.416420 0.0 5521.0 I2 node 1 262654 1215.163737 292.793132 0.0 21799.0 I2 node 2 262654 1252.613831 272.301483 0.0 8730.0 I2 node 3 262654 1248.051227 317.736389 0.0 27542.0 I3 node 0 262654 1310.957182 321.156152 0.0 6153.0 I3 node 1 262654 1374.648117 1014.967586 0.0 26285.0 I3 node 2 262654 1189.853554 212.050092 0.0 5453.0 I3 node 3 262654 1177.940769 227.900081 0.0 21365.0 S2 node 0 262654 1700.026643 232.271445 859.0 20007.0 S2 node 1 262654 1808.629672 382.359837 888.0 9756.0 S2 node 2 262654 2006.924529 379.433718 1145.0 13895.0 S2 node 3 262654 1931.558636 273.757605 1117.0 28650.0 S3 node 0 262654 2862.517766 1357.963859 1189.0 11393.0 S3 node 1 262654 4113.543830 1836.582346 0.0 12186.0 S3 node 2 262654 3101.106093 863.724160 1115.0 7749.0 S3 node 3 262654 2375.731937 389.974812 1264.0 8930.0
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| Apr 2010 | Jan 2010 | Oct 2009 | Jul 2009 |
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The Mean Detrended CTI
We report CTIs with a refined data definition. CTIs were computed for the temperature dependency corrected data. Please see CTI page for detailed explanation. CTI's are computed for Mn K alpha, and defined as slope/intercept x10^4 of row # vs ADU. Data file: here
Focal Plane Temperature
Jun 2010 Focal Temperature
| The Mean (max) FPT: | |
|---|---|
| -115.03 | +/- 3.88 C |
| Mean Width: | |
| 0.45 | +/- 0.31 days |
Averaged Focal Plane Temperature
We are using 10 period moving averages to show trends of peak temperatures and peak widths. Note, the gaps in the width plot are due to missing/corrupted data.
Focal Plane Temperature and Sun Angle, Earth Engle, and Altitude
Bad Pixels
The plots below were generated with a new warm pixel finding script. Please see Acis Bad Pixel Page for details.
Front Side CCDs
Back Side CCD (CCD5)
Science Instrument Background Rates
| Name | Low (keV) | High(KeV) | Description |
|---|---|---|---|
| SSoft | 0.00 | 0.50 | Super soft photons |
| Soft | 0.50 | 1.00 | Soft photons |
| Med | 1.00 | 3.00 | Moderate energy photons |
| Hard | 3.00 | 5.00 | Hard Photons |
| Harder | 5.00 | 10.00 | Very Hard photons |
| Hardest | 10.00 | Beyond 10 keV |
HRC
DOSE of Central 4K Pore-Pairs
Please refer to Maximum Dose Trends for more details.
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IMAGE NPIX MEAN STDDEV MIN MAX
HRCI_07_2010.fits 16777216 0.001 0.033 0.0 2.0
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IMAGE NPIX MEAN STDDEV MIN MAX
HRCI_08_1999_07_2010.fits 16777216 3.239 4.084 0.0 292.0
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IMAGE NPIX MEAN STDDEV MIN MAX
HRCS_07_2010.fits 16777216 0.020 0.158 0.0 11.0
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IMAGE NPIX MEAN STDDEV MIN MAX
HRCS_08_1999_07_2010.fits 16777216 13.090 22.013 0.0 1620.0
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Max dose trend plots corrected for events that "pile-up"
in the center of the taps due to bad position information.
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Gratings
Focus
We plot the width of the zero order streak of ACIS/HETG observations and the width of the zero order image for HRC/LETG observations of point sources. No significant defocusing trend is seen at this time. See Gratings Focus pages. (NOTE: the figures are not updated from Mar 2009 due to a system problem.)
PCAD
ACA Trending
Gyro Bias Drift
Radiation History
Radiation Zone Timing
Plotted below are radiation zone timing plots based on the following definitions of radiation zone:
- RADZONE - Ephin levels (in any of the E1300,P4GM,P41GM channels) are more than 1/3 of RADMON safing thresholds.
- RADMON - Radmon is disabled for radiation zone (as commanded based on OFLS model, for comparison with actual radiation levels).
- PERIGEE - Time of closest earth approach (for comparison)
Radiation Count Rates of Jul 2010
Sun Spot History
Trending
Quarterly Trends
- ACIS Thermal
- OBA Thermal
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| 1CBAT | 204.01 | 1.36 | 2.266e+00 | 4.449e+01 | K | CAMERA BODY TEMP. A |
| 1CBBT | 204.53 | 1.59 | 2.851e+00 | 4.335e+01 | K | CAMERA BODY TEMP. B |
| 1CRAT | 146.19 | 1.85 | -8.098e-01 | -8.119e+00 | K | COLD RADIATOR TEMP. A |
| 1CRBT | 146.76 | 2.10 | 2.162e-01 | 3.781e+01 | K | COLD RADIATOR TEMP. B |
| 1DACTBT | 256.42 | 1.49 | 1.063e+00 | -7.999e+01 | K | DA COLLIMATOR TEMP. B |
| 1DEAMZT | 285.17 | 4.71 | 8.517e+00 | 8.950e+01 | K | DEA -Z PANEL TEMP |
| 1DPAMYT | 286.34 | 5.41 | 9.841e+00 | 5.765e+01 | K | DPA -Y PANEL TEMP |
| 1DPAMZT | 289.54 | 5.16 | 9.425e+00 | 3.135e+01 | K | DPA -Z PANEL TEMP |
| 1OAHAT | 241.56 | 1.29 | 1.155e+00 | -2.175e+01 | K | OPEN ACTUATOR HOUSING TEMP. A |
| 1OAHBT | 237.80 | 1.07 | 2.142e+00 | -1.455e+01 | K | OPEN ACTUATOR HOUSING TEMP. B |
| 1PDEAAT | 304.14 | 9.07 | -6.315e+00 | -8.688e+02 | K | PSMC DEA PS A TEMP |
| 1PDEABT | 295.80 | 8.91 | -7.548e+00 | -8.608e+02 | K | PSMC DEA PS B TEMP |
| 1PIN1AT | 290.66 | 8.03 | -6.885e+00 | -7.600e+02 | K | PSMC TEMP 1A |
| 1WRAT | 187.54 | 1.65 | 2.226e+00 | 6.412e+01 | K | WARM RADIATOR TEMP. A |
| 1WRBT | 187.28 | 1.52 | 2.131e+00 | 6.494e+01 | K | WARM RADIATOR TEMP. B |
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| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| OOBTHR02 | 284.14 | 0.19 | 1.311e-01 | -1.895e+01 | K | RT 25: HRMA STRUT |
| OOBTHR08 | 287.99 | 0.86 | 4.761e-01 | -5.032e+01 | K | RT 31: OBA CONE |
| OOBTHR31 | 287.04 | 3.92 | -3.347e+00 | -3.950e+02 | K | RT 53: OBA AFT BULKHEAD |
| OOBTHR39 | 287.81 | 0.56 | 5.926e-01 | -2.920e+01 | K | RT 61: TFTE CONE |
| OOBTHR50 | 283.95 | 0.91 | -1.031e+00 | -7.977e+01 | K | RT 76: S/C STRUT |
| OOBTHR51 | 289.93 | 1.32 | -8.254e-01 | -8.281e+01 | K | RT 77: S/C STRUT |
| OOBTHR52 | 289.92 | 1.29 | -1.992e-01 | -7.159e+01 | K | RT 78: S/C STRUT |
| OOBTHR53 | 283.41 | 0.45 | -3.380e-01 | -2.246e+01 | K | RT 79: S/C STRUT |
| OOBTHR54 | 283.13 | 6.197e-03 | -4.515e-03 | -3.330e-01 | K | RT 80: S/C STRUT |
| OOBTHR55 | 257.82 | 0.94 | -2.122e+00 | -6.169e+01 | K | RT 157: OBA CONE |
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Spacecraft Motions
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Reaction Wheel Rotations
Note: From Feb 2010, the computation of reaction wheel rotations are slightly modified.
Links to Past Monthly Reports
| Year | Month | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | Jul | Aug | Sep | Oct | Nov | Dec | ||||||
| 2000 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2001 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2002 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2003 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2004 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2005 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2006 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2007 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2008 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2009 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2010 | Jan | Feb | Mar | Apr | May | Jun | ||||||