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.
Please check more detail plots at Telemetered Photon Dose Trend page.
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Statistics: # IMAGE NPIX MEAN RMS MIN MAX ACIS_may17 6004901 10.545 19.877 0.0 9173 I2 node 0 262654 8.482170 7.733817 0.0 974.0 I2 node 1 262654 8.911242 9.021418 0.0 1577.0 I2 node 2 262654 8.880064 7.701869 0.0 1015.0 I2 node 3 262654 9.251118 18.690848 0.0 5331.0 I3 node 0 262654 10.721857 11.280958 0.0 1487.0 I3 node 1 262654 9.458063 17.834800 0.0 5284.0 I3 node 2 262654 8.985393 10.589752 0.0 1170.0 I3 node 3 262654 9.016202 11.162669 0.0 1990.0 S2 node 0 262654 10.086125 10.342902 0.0 3007.0 S2 node 1 262654 10.701467 7.749465 0.0 541.0 S2 node 2 262654 13.645883 16.992568 0.0 3251.0 S2 node 3 262654 14.544430 18.574369 0.0 543.0 S3 node 0 262654 16.723621 25.952478 0.0 391.0 S3 node 1 262654 36.841659 32.365199 0.0 238.0 S3 node 2 262654 35.598200 29.348656 0.0 210.0 S3 node 3 262654 14.745071 14.265803 0.0 174.0
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Statistics: IMAGE NPIX MEAN RMS MIN MAX ACIS_total 6004901 2105.137 2737.344 0.0 119719 I2 node 0 262654 1810.102564 352.853052 370.0 9998.0 I2 node 1 262654 1905.961378 488.479858 392.0 62334.0 I2 node 2 262654 8.880064 7.701869 0.0 1015.0 I2 node 3 262654 1944.154638 500.186292 378.0 28371.0 I3 node 0 262654 2055.367114 507.927008 375.0 8037.0 I3 node 1 262654 2138.139421 1621.116496 383.0 50627.0 I3 node 2 262654 1874.158901 343.180028 360.0 10325.0 I3 node 3 262654 9.016202 11.162669 0.0 1990.0 S2 node 0 262654 2448.988645 360.999819 1306.0 21573.0 S2 node 1 262654 10.701467 7.749465 0.0 541.0 S2 node 2 262654 2869.079856 543.456037 1716.0 27517.0 S2 node 3 262654 2809.411632 399.813431 1614.0 49945.0 S3 node 0 262654 4348.576264 1928.172767 1786.0 15872.0 S3 node 1 262654 5555.546576 2177.175517 0.0 14459.0 S3 node 2 262654 4326.189315 1091.821820 1807.0 10381.0 S3 node 3 262654 3331.663986 498.166508 1926.0 11065.0
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| Feb 2017 | Nov 2016 | Aug 2016 | May 2016 |
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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
Imaging CCDs
Spectral CCDs
Backside CCDs
Focal Plane Temperature
May 2017 Focal Temperature
| The Mean (max) FPT: | |
|---|---|
| -114.52 | +/- 1.81 C |
| Mean Width: | |
| 1.06 | +/- 0.43 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, Sun Angle 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 |
The following three plots show trends of SIB from year 2000. CCDs shown here are CCD3, CCD5, and CCD7. Fitted lines are linear fit after eliminating extreme outliers. For >10 keV plots, 2 lines are fit. One is with a 13 keV filter, and another without.
CCD 3
CCD 5
CCD 7
ACIS Histogram Mode Trends
We collected data from acis histogram mode data, and created trend plots of peak portions and peak widths against time (DOM). The peaks were estimated by fitting a simple Gaussian on three peaks (Al, Ti, and Mn), and the widths were estimated by a width at the half max from the peak.
All histogram data are taken under TIMED and GRADED_HIST mode, SIM position is at an external calibration source position, the focal temperature is around -119.7 C, and parameter settings in aciselec, acistemp are set to about same for all.
CCD 3, Peak Position
CCD 3, Peak Widths
CCD 3, Count Rates
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_05_2017.fits 16777216 0.039 0.202 0.000 9.000
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IMAGE NPIX MEAN STDDEV MIN MAX HRCI_08_1999_05_2017.fits 16777216 4.887 5.209 0.000 292.000
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IMAGE NPIX MEAN STDDEV MIN MAX HRCS_05_2017.fits 16777216 0.067 0.278 0.000 6.000
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IMAGE NPIX MEAN STDDEV MIN MAX HRCS_08_1999_05_2017.fits 16777216 16.462 29.439 0.000 1706.000
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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.
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 May 2017
Sun Spot History
Trending
Quarterly Trends
- HRMA Heater
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| OHRTHR03 | 295.24 | 1.102e-03 | 3.355e-03 | 3.940e-02 | K | RT 5: HRMA FORWARD APERTURE PLATE |
| OHRTHR09 | 294.72 | 0.10 | 4.532e-01 | 2.484e+00 | K | RT 105: HRMA CAP |
| OHRTHR17 | 294.59 | 0.11 | 4.758e-01 | 2.453e+00 | K | RT 125: HSA OUTER CYNLINDER |
| OHRTHR24 | 294.90 | 0.19 | 6.087e-01 | 2.654e-02 | K | RT 12: HRMA AFT HEATER PLATE |
| OHRTHR38 | 296.29 | 0.97 | 2.110e+00 | 6.203e+00 | K | RT 120: HRMA AFT COLLIMATOR OUTER CYLINDER |
| OHRTHR52 | 294.58 | 0.11 | 4.756e-01 | 2.688e+00 | K | RT 100: HRMA CAP |
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- HRMA Thermal
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| 4RT568T | 294.99 | 1.15 | -5.554e+00 | -3.139e+00 | K | RT 568 - HRMA TEMP |
| 4RT569T | 294.78 | 0.20 | -1.334e+00 | 7.246e+00 | K | RT 569 - HRMA TEMP |
| 4RT570T | 294.67 | 9.028e-02 | -4.922e-01 | 7.423e+00 | K | RT 570 - HRMA TEMP |
| 4RT575T | 298.87 | 1.48 | -6.196e+00 | -7.826e+00 | K | RT 575 - OB CONE TEMP |
| 4RT576T | 290.83 | 1.13 | -5.489e+00 | -2.442e-01 | K | RT 576 - OB CONE TEMP |
| 4RT578T | 297.15 | 2.41 | -8.996e+00 | 3.213e+00 | K | RT 578 - OB CONE TEMP |
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- MUPS
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| PM1THV1T | 331.85 | 8.13 | 7.987e+00 | -7.932e+02 | K | MUPS 1 THRUSTER VALVE 01 TEMP |
| PLINE02T | 320.68 | 9.61 | -1.517e+00 | 5.416e+02 | K | PROP LINE TEMP 02 |
| PLINE03T | 318.18 | 11.95 | 4.329e-01 | 6.675e+02 | K | PROP LINE TEMP 03 |
| PLINE04T | 304.38 | 11.62 | 8.152e+00 | 6.499e+02 | K | PROP LINE TEMP 04 |
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Envelope Trending
Spacecraft Motions
TSC and FA Cummulative Moter Distance
HETG and LETG Cummulative Insertion Counts
HETG/LETG Insertion/Retraction Angle
Reaction Wheel Rotations
Links to Past Monthly Reports
| Year | Month | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | Jan | Feb | Mar | Apr | ||||||||
| 2016 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2015 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2014 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2013 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2012 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2011 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2010 | 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 |
| 2008 | 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 |
| 2006 | 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 |
| 2004 | 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 |
| 2002 | 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 |
| 2000 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1999 | Jul | Aug | Sep | Oct | Nov | Dec | ||||||