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_jul16 6004901 6.397 11.598 0.0 3684 I2 node 0 262654 7.570328 10.775462 0.0 1632.0 I2 node 1 262654 7.878941 11.274074 0.0 1740.0 I2 node 2 262654 8.024580 10.097733 0.0 1148.0 I2 node 3 262654 8.060456 14.365418 0.0 3684.0 I3 node 0 262654 9.856386 10.540319 0.0 1011.0 I3 node 1 262654 8.632518 13.816220 0.0 2341.0 I3 node 2 262654 7.674910 9.443789 0.0 1183.0 I3 node 3 262654 7.652065 9.937743 0.0 1070.0 S2 node 0 262654 6.733433 4.605916 0.0 501.0 S2 node 1 262654 7.034563 5.008057 0.0 545.0 S2 node 2 262654 7.665074 5.742624 0.0 617.0 S2 node 3 262654 7.631537 5.113672 0.0 501.0 S3 node 0 262654 10.687063 11.007259 0.0 306.0 S3 node 1 262654 11.111687 8.704308 0.0 512.0 S3 node 2 262654 9.918957 7.411449 0.0 190.0 S3 node 3 262654 8.833236 6.348774 0.0 211.0
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Statistics: IMAGE NPIX MEAN RMS MIN MAX ACIS_total 6004901 2024.790 2640.391 0.0 115883 I2 node 0 262654 1727.336645 333.332084 353.0 9427.0 I2 node 1 262654 1819.223954 460.108387 371.0 51338.0 I2 node 2 262654 8.024580 10.097733 0.0 1148.0 I2 node 3 262654 1850.356494 468.838043 356.0 28251.0 I3 node 0 262654 1952.552224 470.361836 350.0 7611.0 I3 node 1 262654 2042.098157 1550.044206 353.0 38618.0 I3 node 2 262654 1787.158909 323.684180 340.0 9648.0 I3 node 3 262654 7.652065 9.937743 0.0 1070.0 S2 node 0 262654 2362.660183 345.560484 1269.0 21448.0 S2 node 1 262654 7.034563 5.008057 0.0 545.0 S2 node 2 262654 2769.067291 528.064802 1679.0 27383.0 S2 node 3 262654 2704.931068 382.117188 1577.0 47549.0 S3 node 0 262654 4200.795787 1862.679650 1741.0 13896.0 S3 node 1 262654 5389.921211 2145.219917 0.0 14355.0 S3 node 2 262654 4161.880304 1050.066081 1732.0 10020.0 S3 node 3 262654 3221.851864 486.907474 1848.0 10853.0
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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 2016 Focal Temperature
| The Mean (max) FPT: | |
|---|---|
| -113.89 | +/- 2.67 C |
| Mean Width: | |
| 1.00 | +/- 0.63 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 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:
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HRC
DOSE of Central 4K Pore-Pairs
Please refer to Maximum Dose Trends for more details.
No Data
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IMAGE NPIX MEAN STDDEV MIN MAX
HRCI_08_1999_07_2016.fits 16777216 4.460 4.997 0.0 292.0
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IMAGE NPIX MEAN STDDEV MIN MAX
HRCS_07_2016.fits 16777216 0.017 0.1405 0.0 12.0
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IMAGE NPIX MEAN STDDEV MIN MAX
HRCS_08_1999_07_2016.fits 16777216 15.982 28.548 0.0 1701.0
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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.
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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 2016
Sun Spot History
Trending
Quarterly Trends
- SIM Electronics
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| AGRNDADC | 1.812e-04 | 1.995e-04 | -1.509e-04 | 4.007e-03 | V | Analog ground A/D convert reading |
| FATABADC | 5.00 | 2.314e-03 | -6.310e-03 | 1.743e-01 | Converter | FA Tab Position Sensor A/D |
| N15VADC | -15.01 | 4.737e-04 | -3.339e-04 | 2.052e-02 | Reading | -15V Power Supply A/D Converter |
| P15VADC | 14.96 | 5.048e-04 | -6.639e-04 | 2.449e-02 | Reading | +15V Power Supply A/D Converter |
| P5VADC | 4.99 | 2.202e-02 | -4.937e-02 | 1.449e+00 | Reading | +5V Power Supply A/D Converter |
| TSCTABADC | 5.00 | 4.107e-03 | -1.020e-02 | 3.261e-01 | converter | TSC Tab Position Sensor A/D |
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- SIM Actuator
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| FAEDGE | 0.000e+00 | 0.000e+00 | 0.000e+00 | 0.000e+00 | - | FA Tab Edge Detection Flags |
| FAPOS | -0.74 | 0.11 | 1.390e-01 | -1.456e+01 | mm | FA position (3FAPOS/7FAPOS) |
| FATABWID | 0.000e+00 | 0.000e+00 | 0.000e+00 | 0.000e+00 | - | Most recently detected FA tab width |
| LDRTNUM | 2.32 | 0.82 | 8.134e-01 | -7.565e+01 | - | Last Detected Reference Tab Number |
| LDRTRELPOS | 0.14 | 8.944e-02 | 1.248e-01 | -4.562e+00 | (3LDRTPOS) | Last detected reference tab relative position mm |
| MRMDEST | 780.54 | 1.709e+04 | -1.025e+04 | 3.200e+05 | step | Most Recent Motor Move Destination |
| PWMLEVEL | 0.30 | 0.24 | 5.983e-01 | -1.267e+01 | (3MRMMXMV) | maximum motor volrtage PWM level most recent move |
| TSCEDGE | 72.92 | 10.55 | 3.719e-01 | 9.040e+00 | - | TSC Tab Edge Detection Flags |
| TSCPOS | 94.63 | 1.937e+02 | 2.848e+01 | -2.898e+03 | mm | TSC position (3TSCPOS) |
| TSCTABWID | 774.77 | 2.194e+02 | -3.139e+02 | 1.432e+04 | - | Most recently detected TSC tab width |
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- EPS Batteries
| Previous Quarter | ||||||
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| EB2CI | 0.28 | 4.821e-02 | 3.486e-02 | 1.402e-01 | AMP | BATT 2 CHARGE CURRENT |
| EB2DI | 0.02 | 6.930e-02 | 3.674e-02 | 5.685e-02 | AMP | BATT 2 DISCHARGE CURRENT |
| EB2V | 32.30 | 8.351e-02 | -5.636e-01 | 2.319e+00 | V | BATT 2 VOLTAGE |
| ECNV1V | 14.89 | 4.105e-03 | 1.262e-02 | -6.035e-02 | V | CONV 1 +15V OUTPUT |
| ECNV2V | 14.84 | 1.258e-02 | 5.490e-02 | -2.477e-01 | V | CONV 2 +15V OUTPUT |
| ECNV3V | 15.29 | 3.528e-03 | 7.331e-04 | -2.642e-02 | V | CONV 3 +15V OUTPUT |
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Envelope Trending
ACIS Electronics Side B
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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2016 | Jan | Feb | Mar | Apr | May | Jun | ||||||
| 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 | ||||||