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_feb18 6004901 6.286 15.658 0.0 8407 I2 node 0 262654 7.053086 3.248980 0.0 50.0 I2 node 1 262654 7.538285 21.126763 0.0 7760.0 I2 node 2 262654 7.350832 3.271109 0.0 88.0 I2 node 3 262654 7.407426 26.399528 0.0 8407.0 I3 node 0 262654 7.200436 11.651727 0.0 4755.0 I3 node 1 262654 7.365662 11.173316 0.0 5106.0 I3 node 2 262654 6.958799 3.112027 0.0 80.0 I3 node 3 262654 7.068807 15.334200 0.0 5143.0 S2 node 0 262654 5.878114 12.457783 0.0 6033.0 S2 node 1 262654 6.163189 4.867197 0.0 663.0 S2 node 2 262654 6.845301 21.455660 0.0 7533.0 S2 node 3 262654 8.125416 17.045599 0.0 6492.0 S3 node 0 262654 14.055970 36.627895 0.0 1789.0 S3 node 1 262654 12.733932 5.747842 0.0 159.0 S3 node 2 262654 10.895083 4.231508 0.0 166.0 S3 node 3 262654 9.453797 3.781199 0.0 136.0
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Statistics: IMAGE NPIX MEAN RMS MIN MAX ACIS_total 6004901 2179.210 2827.166 0.0 122894 I2 node 0 262654 1871.953794 367.533400 386.0 10477.0 I2 node 1 262654 1970.696254 511.410271 411.0 72774.0 I2 node 2 262654 7.350832 3.271109 0.0 88.0 I2 node 3 262654 2007.730951 518.055432 394.0 28448.0 I3 node 0 262654 2122.455534 524.286532 387.0 8302.0 I3 node 1 262654 2205.380985 1644.013105 401.0 51517.0 I3 node 2 262654 1937.478454 356.668646 385.0 10805.0 I3 node 3 262654 7.068807 15.334200 0.0 5143.0 S2 node 0 262654 2536.721052 395.588837 1452.0 21690.0 S2 node 1 262654 6.163189 4.867197 0.0 663.0 S2 node 2 262654 2981.974690 612.869643 2042.0 27603.0 S2 node 3 262654 2929.615967 465.238867 1793.0 52753.0 S3 node 0 262654 4518.629037 2046.803915 1986.0 25702.0 S3 node 1 262654 5714.843324 2209.679494 0.0 28390.0 S3 node 2 262654 4485.980438 1209.419505 1874.0 24741.0 S3 node 3 262654 3460.183824 641.356013 2121.0 24394.0
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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
Feb 2018 Focal Temperature
| The Mean (max) FPT: | |
|---|---|
| -114.36 | +/- 1.44 C |
| Mean Width: | |
| 0.73 | +/- 0.27 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 |
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_02_2018.fits 16777216 0.012 0.114 0.000 8.000
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IMAGE NPIX MEAN STDDEV MIN MAX HRCI_08_1999_02_2018.fits 16777216 5.095 5.290 0.000 294.000
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IMAGE NPIX MEAN STDDEV MIN MAX HRCS_02_2018.fits 16777216 0.138 0.423 0.000 7.000
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IMAGE NPIX MEAN STDDEV MIN MAX HRCS_08_1999_02_2018.fits 16777216 17.409 32.034 0.000 1728.000
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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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HRMA Focus
Plots below show various characteristics of detected imaging sources. Standard level 2 data products (*src2.fits) are used. Only observations with focus (sim_x) within 0.01 mm of nominal value for given SI configuration are used. Sources are also filtered for strength (SNR > 15).
For individual detectors, please go to MTA SRC2 Monitoring page.
Source Sky Position
PSF vs Time
Source Ellipse Roundness
80% Encircled Energy Radius
Signal-to-Noise Ratio
Rotation
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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 Feb 2018
Sun Spot History
Trending
Quarterly Trends
- HRC Temperature
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| 2CEAHVPT | 301.20 | 2.37 | -2.884e+00 | -1.985e+02 | K | CEA RADIATOR TEMPERATURE AT CENTER |
| 2CHTRPZT | 297.61 | 2.22 | -2.640e+00 | -1.606e+02 | K | CENTRAL ELECTRONICS BOX TEMP |
| 2CONDMXT | 294.23 | 2.39 | -2.586e+00 | -3.261e+01 | K | CONDUIT -X FACE TEMPERATURE |
| 2DCENTRT | 293.22 | 2.02 | -3.004e+00 | -1.576e+01 | K | DETECTOR HOUSING TEMP 2 |
| 2DTSTATT | 293.87 | 1.96 | -2.752e+00 | 6.116e+01 | K | DETECTOR HOUSING TEMP 1 |
| 2FHTRMZT | 295.98 | 2.11 | -2.599e+00 | 1.133e+02 | K | FRONT END ELECTRONICS BOX TEMPERATURE |
| 2FRADPYT | 291.69 | 2.18 | -2.341e+00 | 1.249e+02 | K | FRONT END ASSEMBLY +Y AT RADIATOR CENTER TEMP |
| 2PMT1T | 295.12 | 2.63 | -3.297e+00 | -3.558e+01 | K | PMT 1 TEMPERATURE |
| 2PMT2T | 297.52 | 2.88 | -3.055e+00 | -3.393e+01 | K | PMT 2 TEMPERATURE |
| 2UVLSPXT | 289.13 | 2.35 | -3.506e+00 | -4.057e+01 | K | UV LIGHT SHIELD NEXT TO SNOUT TEMP |
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- HRC HK
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| FE00ATM | 22.37 | 1.60 | -1.735e+00 | 1.024e+02 | C | Front end temperature (2FE00ATM) |
| FEPRATM | 25.09 | 1.86 | -2.023e+00 | 1.181e+02 | C | FE temp card temperature (2FEPRATM) |
| IMHVATM | 31.82 | 1.68 | 7.272e-01 | -6.239e+01 | (2IMHVATM)C | |
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- PCAD Temperature
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| AACCCDPT | 261.03 | 0.89 | 1.469e+00 | -6.095e+00 | K | AC CCD TEMP (PRI) |
| AACCCDRT | 304.88 | 0.90 | 1.490e+00 | -3.748e+00 | K | AC CCD TEMP (RDNT) |
| AACH1T | 302.19 | 0.96 | 1.609e+00 | -3.964e+00 | K | AC HOUSING TEMP (ACH1) |
| AACH2T | 302.24 | 0.96 | 1.596e+00 | -8.413e+00 | K | AC HOUSING TEMP (ACH2) |
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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 | |||||||||||
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| 2000 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1999 | Jul | Aug | Sep | Oct | Nov | Dec | ||||||