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_jul17 6004901 8.989 24.313 0.0 3159 I2 node 0 262654 7.389368 3.342079 0.0 66.0 I2 node 1 262654 7.837271 4.839284 0.0 1568.0 I2 node 2 262654 7.708831 6.993289 0.0 3139.0 I2 node 3 262654 7.583353 3.496748 0.0 89.0 I3 node 0 262654 8.053008 3.616681 0.0 104.0 I3 node 1 262654 7.975653 12.592219 0.0 3135.0 I3 node 2 262654 7.539710 3.304808 0.0 68.0 I3 node 3 262654 7.647474 10.889823 0.0 3137.0 S2 node 0 262654 10.199713 8.628753 0.0 473.0 S2 node 1 262654 11.125405 12.213908 0.0 154.0 S2 node 2 262654 15.554982 33.149753 0.0 3159.0 S2 node 3 262654 16.189153 34.764831 0.0 602.0 S3 node 0 262654 20.139951 61.555849 0.0 1041.0 S3 node 1 262654 20.474837 45.395360 0.0 637.0 S3 node 2 262654 20.630300 45.589591 0.0 600.0 S3 node 3 262654 14.302299 20.422687 0.0 291.0
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Statistics: IMAGE NPIX MEAN RMS MIN MAX ACIS_total 6004901 2122.676 2756.853 0.0 120418 I2 node 0 262654 1822.738904 355.636185 375.0 10104.0 I2 node 1 262654 1919.306728 493.320450 395.0 65083.0 I2 node 2 262654 7.708831 6.993289 0.0 3139.0 I2 node 3 262654 1957.148425 503.578013 382.0 28387.0 I3 node 0 262654 2070.002959 511.642598 380.0 8101.0 I3 node 1 262654 2152.528754 1625.517791 389.0 50681.0 I3 node 2 262654 1887.927162 346.004010 367.0 10446.0 I3 node 3 262654 7.647474 10.889823 0.0 3137.0 S2 node 0 262654 2468.327673 362.217698 1319.0 21596.0 S2 node 1 262654 11.125405 12.213908 0.0 154.0 S2 node 2 262654 2899.723709 543.934786 1725.0 27533.0 S2 node 3 262654 2844.422569 399.260318 1621.0 50416.0 S3 node 0 262654 4397.905476 1964.630898 1794.0 17865.0 S3 node 1 262654 5596.539963 2173.044612 0.0 14473.0 S3 node 2 262654 4365.060405 1088.004314 1815.0 10432.0 S3 node 3 262654 3357.989714 499.357611 1937.0 11114.0
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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
Jul 2017 Focal Temperature
| The Mean (max) FPT: | |
|---|---|
| -114.13 | +/- 2.35 C |
| Mean Width: | |
| 1.06 | +/- 0.52 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 Corner Pixels
We plot the average corner pixel centroid slope and mean for ACIS observations. Separate plots are shown for FAINT MODE (3X3) and VFAINT MODE (5X5) observations. Metric is the centroid of a Gaussian fit to the histogram of corner pixel PHA values of detected events. Plus signs are FAINT observations, diamonds are VFAINT observations, and boxes are VFAINT observations with centroids computed using only the corner pixels of a 3X3 event island (referred to as AFAINT). We see a very small upward trend.
CCD: I3
CCD: S3
ACIS Bias Trends
The bias plus overclock level was calculated as follows:
- Get acisf*bias0.fits is obtained from a database or /dsops/ap/sdp/cache/*/acis/
- Data with timed mode exposure is selected.
- Fits files were divided into 4 quads, then an average of bias level for each quad is computed. No corrections for dead spots, columns etc were included.
An example of Overclock values as reported in FITS file header:
An example of mean bias minus overclock value:
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_2017.fits 16777216 0.029 0.169 0.000 3.000
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IMAGE NPIX MEAN STDDEV MIN MAX HRCI_08_1999_07_2017.fits 16777216 4.971 5.226 0.000 292.000
No Data
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IMAGE NPIX MEAN STDDEV MIN MAX HRCS_08_1999_07_2017.fits 16777216 16.577 29.653 0.000 1712.000
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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
ACIS-1
ACIS-6
HRC-I-1
HRC-S-1
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 2017
Sun Spot History
Trending
Quarterly Trends
- ACIS Temperature
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| 1CBAT | 208.57 | 2.41 | -1.291e+00 | 6.205e+01 | K | CAMERA BODY TEMP. A |
| 1CRAT | 148.33 | 2.35 | 1.432e-01 | 3.047e+01 | K | COLD RADIATOR TEMP. A |
| 1CRBT | 149.08 | 2.45 | 3.869e-01 | 3.109e+01 | K | COLD RADIATOR TEMP. B |
| 1DACTBT | 257.62 | 2.93 | 2.286e+00 | 7.564e+01 | K | DA COLLIMATOR TEMP. B |
| 1DEAMZT | 291.99 | 7.79 | -6.906e+00 | 1.506e+02 | K | DEA -Z PANEL TEMP |
| 1DPAMYT | 293.18 | 7.84 | -8.303e+00 | 6.285e+01 | K | DPA -Y PANEL TEMP |
| 1DPAMZT | 296.17 | 7.68 | -8.555e+00 | 8.025e+01 | K | DPA -Z PANEL TEMP |
| 1OAHAT | 245.42 | 2.33 | -1.695e-01 | 5.277e+01 | K | OPEN ACTUATOR HOUSING TEMP. A |
| 1OAHBT | 241.43 | 2.16 | -5.268e-01 | 7.623e+01 | K | OPEN ACTUATOR HOUSING TEMP. B |
| 1PDEAAT | 302.42 | 6.33 | 3.035e+00 | -1.385e+02 | K | PSMC DEA PS A TEMP |
| 1PDEABT | 294.61 | 6.35 | 3.408e+00 | -1.465e+02 | K | PSMC DEA PS B TEMP |
| 1PIN1AT | 330.82 | 16.44 | 1.379e+01 | 7.254e+02 | K | PSMC TEMP 1A |
| 1WRAT | 191.68 | 2.34 | -1.016e+00 | 4.821e+01 | K | WARM RADIATOR TEMP. A |
| 1WRBT | 191.27 | 2.33 | -1.287e+00 | 5.667e+01 | K | WARM RADIATOR TEMP. B |
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- ACIS Electronics Side B
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| 1DAHBCU | 1.108e-05 | 5.226e-05 | 1.278e-05 | -2.101e-04 | AMP | DA HEATER CURRENT B |
| 1DAHBVO | 0.000e+00 | 0.000e+00 | 0.000e+00 | 0.000e+00 | V | DA HEATER VOLTAGE B |
| 1DAHHBVO | 0.000e+00 | 0.000e+00 | 0.000e+00 | 0.000e+00 | V | DA HOUSING HEATER INPUT VOLTAGE B |
| 1DE28BVO | 28.34 | 0.16 | 8.945e-01 | -8.733e+00 | V | DEA +28V INPUT B |
| 1DEICBCU | 16.39 | 1.773e-02 | 2.618e-02 | -3.243e-01 | AMP | DEA INPUT CURRENT B |
| 1DEN0BVO | -0.16 | 1.782e-02 | 1.643e-02 | 2.830e-01 | V | DEA -6V VOLTAGE B |
| 1DEN1BVO | -0.35 | 4.930e-02 | 4.469e-02 | 6.534e-01 | V | DEA -15V VOLTAGE B |
| 1DEP0BVO | 0.06 | 1.818e-02 | -1.875e-02 | -2.048e-01 | V | DEA +6V VOLTAGE B |
| 1DEP1BVO | 0.15 | 4.543e-02 | -4.228e-02 | -6.237e-01 | V | DEA +15V ANALOG B |
| 1DEP2BVO | 0.24 | 6.955e-02 | -6.588e-02 | -9.572e-01 | V | DEA +24V ANALOG B |
| 1DEP3BVO | 0.30 | 9.006e-02 | -8.475e-02 | -1.176e+00 | V | DEA +28V ANALOG B |
| 1DP28BVO | 28.36 | 0.16 | 8.765e-01 | -8.971e+00 | V | DPA +28V INPUT B |
| 1DPICBCU | 1.00 | 0.33 | -4.320e-01 | -2.385e+00 | AMP | DPA INPUT CURRENT B |
| 1DPP0BVO | 5.23 | 4.651e-02 | -5.403e-02 | -4.311e-01 | V | DPA +5V ANALOG B |
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- EPHIN Temperature and Voltage
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| 5EIOT | 354.71 | 19.52 | -1.024e+01 | 1.635e+02 | K | EIO TEMP |
| 5EPHINT | 334.27 | 6.20 | -2.124e+01 | 1.981e+02 | K | EPHIN TEMP |
| HKEBOXTEMP | 339.48 | 6.45 | -2.204e+01 | 1.982e+02 | K | EPHIN HOUSEKEEPING EBOX: TEMPERATURE (5EHSE300) |
| HKN6I | 73.13 | 0.24 | 5.066e-01 | -6.930e+00 | AMP | HK 6 Volts Rail - Current |
| HKN6V | -5.97 | 1.149e-02 | -1.547e-02 | 3.482e-01 | V | HK -6 Volts Rail - Voltage |
| HKP27I | 6.98 | 0.10 | 2.538e-01 | -2.608e+00 | AMP | HK 27 Volts Rail - Current |
| HKP27V | 26.88 | 4.905e-02 | -8.520e-02 | 1.580e+00 | V | HK 27 Volts Rail - Voltage |
| HKP5I | 49.31 | 1.90 | -1.158e+00 | 6.135e+01 | AMP | HK 5 Volts Rail - Current |
| HKP5V | 5.08 | 8.875e-03 | 1.587e-02 | -1.002e-01 | V | HK 5 Volts Rail - Voltage |
| HKP6I | 137.55 | 0.73 | -2.404e+00 | 8.670e+00 | AMP | HK 6 Volts Rail - Current |
| HKP6V | 5.77 | 1.356e-02 | 3.652e-02 | -2.107e-01 | V | HK 6 Volts Rail - Voltage |
| TEIO | 327.99 | 20.59 | -1.003e+01 | 2.788e+02 | K | EPHIN ELECTRONICS HOUSING TEMP |
| TEPHIN | 334.43 | 6.39 | -2.093e+01 | 2.040e+02 | K | EPHIN SENSOR HOUSING TEMP |
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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 | May | Jun | ||||||
| 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 | ||||||