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_mar18 6004901 7.936 22.502 0.0 8821 I2 node 0 262654 5.342038 15.535816 0.0 1436.0 I2 node 1 262654 5.598799 17.586742 0.0 1725.0 I2 node 2 262654 5.547597 18.030653 0.0 2812.0 I2 node 3 262654 5.693245 27.601088 0.0 8494.0 I3 node 0 262654 6.758787 17.494480 0.0 2340.0 I3 node 1 262654 6.607720 17.692947 0.0 3164.0 I3 node 2 262654 6.294082 16.411481 0.0 1882.0 I3 node 3 262654 6.421237 20.567501 0.0 6234.0 S2 node 0 262654 11.693298 12.469745 0.0 2834.0 S2 node 1 262654 12.091464 10.358962 0.0 822.0 S2 node 2 262654 12.577332 26.736586 0.0 8821.0 S2 node 3 262654 12.914819 11.352694 0.0 2821.0 S3 node 0 262654 19.253646 65.367136 0.0 3300.0 S3 node 1 262654 16.961520 9.566563 0.0 493.0 S3 node 2 262654 15.617115 7.504746 1.0 221.0 S3 node 3 262654 14.023273 6.857018 0.0 256.0
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Statistics: IMAGE NPIX MEAN RMS MIN MAX ACIS_total 6004901 2187.146 2837.277 0.0 123338 I2 node 0 262654 1877.295832 370.575938 388.0 10520.0 I2 node 1 262654 1976.295053 514.420042 411.0 73301.0 I2 node 2 262654 5.547597 18.030653 0.0 2812.0 I2 node 3 262654 2013.424195 521.421646 396.0 28454.0 I3 node 0 262654 2129.214321 527.423695 389.0 8581.0 I3 node 1 262654 2211.988705 1647.301610 404.0 54681.0 I3 node 2 262654 1943.772536 359.972321 387.0 10843.0 I3 node 3 262654 6.421237 20.567501 0.0 6234.0 S2 node 0 262654 2548.414350 398.048820 1455.0 21709.0 S2 node 1 262654 12.091464 10.358962 0.0 822.0 S2 node 2 262654 2994.552022 615.783325 2045.0 27618.0 S2 node 3 262654 2942.530787 467.323271 1796.0 53290.0 S3 node 0 262654 4537.882682 2068.905020 1993.0 26626.0 S3 node 1 262654 5731.804844 2212.120979 0.0 28453.0 S3 node 2 262654 4501.597553 1211.595719 1887.0 24783.0 S3 node 3 262654 3474.207096 642.964535 2131.0 24435.0
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| Dec 2017 | Sep 2017 | Jun 2017 | Mar 2017 |
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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
Mar 2018 Focal Temperature
| The Mean (max) FPT: | |
|---|---|
| -113.65 | +/- 1.84 C |
| Mean Width: | |
| 0.88 | +/- 0.41 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 |
ACIS Rejected Events
The links below are plots of stat1 quantities, showing on-board rejected events. The average EVTSENT, DROP_AMP, DROP_POS, DROP_GRD, THR_PIX, and maximum BERR_SUM obtained from L1 acis*stat1.fits files are plotted for each observation. CTI observations are plotted separately from regular science observations.
Column definitions:
- EVTSENT - number of events sent in data record
- DROP_AMP - number of discarded events due to corrected amplitude
- DROP_POS - number of discarded events due to CCD position
- DROP_GRD - number of discarded events due to grade code
- THR_PIX - number of pixels above respective threshold level
- BERR_SUM - number of pixel bias errors so far in science run
Note the half-life decline of the CTI source is clearly evidenced in the steady janline of EVTSENT.
CCD3 CTI Observations
CCD3 Science Observations
CCD7 CTI Observations
CCD7 Science Observations
ACIS Gain Trends
We computed ACIS gain and offset from ACIS event1 files used in CTI computation, following the step described by C. Grant ACIS gain @ -120C page.
Instead computing gains and offsets from individual observations, we combined all data from each month and computed an monthly averaged gain and offset.
The following plots show CCD3 and CCD5 gains and offset trends.
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| CCD 5 | |
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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_03_2018.fits 16777216 0.008 0.089 0.000 3.000
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IMAGE NPIX MEAN STDDEV MIN MAX HRCI_08_1999_03_2018.fits 16777216 5.103 5.292 0.000 294.000
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IMAGE NPIX MEAN STDDEV MIN MAX HRCS_03_2018.fits 16777216 0.019 0.212 0.000 24.000
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IMAGE NPIX MEAN STDDEV MIN MAX HRCS_08_1999_03_2018.fits 16777216 17.428 32.117 0.000 1729.000
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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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| Dec 2017 | Sep 2017 | Jun 2017 | Mar 2017 |
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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 Mar 2018
Sun Spot History
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Trending
Critical Trends
| ACIS Temperatures - Daily Maximums | ||||||
|---|---|---|---|---|---|---|
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| 1PDEAAT | 306.95 | 7.45 | 7.290e-01 | -2.294e+01 | K | PSMC DEA PS A TEMP |
| 1PIN1AT | 326.49 | 18.58 | 1.929e+01 | -2.552e+01 | K | PSMC TEMP 1A |
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| HRMA Computed Averages - Daily Maximums | ||||||
|---|---|---|---|---|---|---|
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| OBAAVG | 294.52 | 1.42 | 1.228e+00 | -9.753e-01 | K | OBA/TFTE TEMP |
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| EPHIN Temperatures - Daily Maximums | ||||||
|---|---|---|---|---|---|---|
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| TEIO | 336.15 | 19.50 | 4.918e+00 | -2.826e+01 | K | EPHIN ELECTRONICS HOUSING TEMP |
| TEPHIN | 337.38 | 6.72 | 3.073e+00 | 7.160e+00 | K | EPHIN SENSOR HOUSING TEMP |
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| S/C Main Temperatures - Daily Maximums | ||||||
|---|---|---|---|---|---|---|
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| S/C Ancillary Temperatures - Daily Maximums | ||||||
|---|---|---|---|---|---|---|
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| TFSSBKT1 | 346.55 | 19.71 | 1.158e+00 | -3.947e+01 | K | FSS BRACKET-1 TEMP (+Y) |
| TFSSBKT2 | 342.91 | 25.92 | 7.276e-01 | -6.229e+01 | K | FSS BRACKET-2 TEMP (+Y) |
| TSCTSF1 | 309.88 | 4.47 | 4.818e+00 | 3.773e+00 | K | SC-TS FITTING -1 TEMP |
| TSCTSF6 | 311.29 | 4.41 | 3.964e+00 | 3.179e+00 | K | SC-TS FITTING -6 TEMP |
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| MUPS - Daily Maximums | ||||||
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| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| PM1THV1T | 333.47 | 8.23 | -2.762e-01 | -1.892e+02 | K | MUPS 1 THRUSTER VALVE 01 TEMP |
| PLINE02T | 317.64 | 11.13 | 3.347e+00 | 5.826e+00 | K | PROP LINE TEMP 02 |
| PLINE03T | 316.64 | 13.64 | 3.278e+00 | 7.846e+00 | K | PROP LINE TEMP 03 |
| PLINE04T | 302.24 | 12.73 | 3.233e+00 | 7.055e+00 | K | PROP LINE TEMP 04 |
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Quarterly Trends
- PCAD FTS Temperature and Gradient
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| OHRTHR27 | 297.17 | 1.157e-02 | 2.474e-02 | -4.145e-01 | K | RT 20 : PERISCOPE |
| OHRTHR42 | 295.17 | 0.20 | -1.208e-01 | -1.741e+01 | K | RT 133: PERISCOPE |
| OHRTHR43 | 295.39 | 0.24 | -6.906e-02 | -1.625e+01 | K | RT 134: PERISCOPE |
| OOBAGRD3 | -0.30 | 6.080e-02 | -5.074e-02 | -1.281e+00 | K | RT 505 TO RT 504: PERISCOPE GRADIENT |
| OOBAGRD6 | 0.09 | 5.378e-03 | -1.431e-03 | -2.684e-01 | K | RT 507 TO RT 506: PERISCOPE GRADIENT |
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- SIM Temperature
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| 3BTU_BPT | 269.09 | 6.79 | -8.940e+00 | -1.834e-12 | K | BTU BASEPLATE (+X)), ABORT HTR TSC2 |
| 3TSMXCET | 249.59 | 3.809e+01 | -2.848e+01 | -4.114e-12 | K | -X TURTLE SHELL NR HRC CEA |
| 3TSMXSPT | 335.31 | 1.312e+02 | 8.475e+02 | 6.927e-11 | K | -X TURTLE SHELL NR ACIS SS |
| BOXTEMP | 283.17 | 1.90 | -2.133e+00 | -3.229e-13 | K | SEA box temperature (3FASEAAT) |
| FAMTRTEMP | 274.34 | 2.45 | -2.786e+00 | 6.446e-13 | K | FA motor temperature |
| FLEXATEMP | 273.05 | 2.69 | -2.067e+00 | 4.382e-13 | K | Flexure A temperature (3FAFLAAT) |
| PSUTEMP | 311.71 | 1.52 | -3.514e-01 | 3.490e-14 | K | SEA power supply temperature (3FAPSAT) |
| TSCMTRTEMP | 276.47 | 17.17 | -6.816e+00 | -1.173e-12 | K | TSC motor temperature |
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- SIIM Electronics
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| AGRNDADC | -9.352e-06 | 1.913e-04 | 9.580e-05 | 6.972e-04 | V | Analog ground A/D convert reading |
| FATABADC | 5.00 | 2.199e-03 | -1.134e-03 | -1.019e-01 | Converter | FA Tab Position Sensor A/D |
| N15VADC | -15.02 | 4.947e-04 | -2.265e-05 | -4.249e-03 | Reading | -15V Power Supply A/D Converter |
| P15VADC | 14.96 | 5.066e-04 | -2.807e-04 | 7.276e-03 | Reading | +15V Power Supply A/D Converter |
| P5VADC | 4.98 | 2.337e-02 | 9.848e-04 | -3.969e-01 | Reading | +5V Power Supply A/D Converter |
| TSCTABADC | 5.00 | 4.074e-03 | -3.689e-03 | -2.332e-01 | converter | TSC Tab Position Sensor A/D |
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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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2018 | Jan | Feb | ||||||||||
| 2017 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 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 | ||||||