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.
Statistics: # IMAGE NPIX MEAN RMS MIN MAX ACIS_oct17 6004901 11.297 99.619 0.0 10999 I2 node 0 262654 6.835081 3.177120 0.0 51.0 I2 node 1 262654 7.049370 7.051444 0.0 3077.0 I2 node 2 262654 6.828083 3.103283 0.0 66.0 I2 node 3 262654 6.961214 15.847241 0.0 7818.0 I3 node 0 262654 6.511781 3.185150 0.0 263.0 I3 node 1 262654 6.405562 3.446495 0.0 113.0 I3 node 2 262654 6.164434 2.883854 0.0 61.0 I3 node 3 262654 6.270364 10.829154 0.0 5299.0 S2 node 0 262654 15.841713 78.589598 0.0 5504.0 S2 node 1 262654 17.485310 87.995284 0.0 4197.0 S2 node 2 262654 20.888140 156.736039 0.0 10128.0 S2 node 3 262654 20.075670 119.889403 0.0 5860.0 S3 node 0 262654 27.557334 147.140583 0.0 7608.0 S3 node 1 262654 26.400086 148.385124 0.0 9055.0 S3 node 2 262654 30.117272 271.965364 0.0 10882.0 S3 node 3 262654 23.954287 212.406272 0.0 10999.0
Statistics: IMAGE NPIX MEAN RMS MIN MAX ACIS_total 6004901 2149.085 2790.435 0.0 121400 I2 node 0 262654 1844.902650 361.640192 380.0 10288.0 I2 node 1 262654 1942.365149 502.222579 400.0 69319.0 I2 node 2 262654 6.828083 3.103283 0.0 66.0 I2 node 3 262654 1979.754908 510.132348 387.0 28412.0 I3 node 0 262654 2092.903042 517.398035 383.0 8184.0 I3 node 1 262654 2175.925418 1632.841345 393.0 51338.0 I3 node 2 262654 1909.452699 351.233029 371.0 10611.0 I3 node 3 262654 6.270364 10.829154 0.0 5299.0 S2 node 0 262654 2499.528565 381.348282 1437.0 21625.0 S2 node 1 262654 17.485310 87.995284 0.0 4197.0 S2 node 2 262654 2939.693222 588.182092 2017.0 27559.0 S2 node 3 262654 2884.999238 438.963619 1746.0 51390.0 S3 node 0 262654 4458.758938 2020.793263 1951.0 23479.0 S3 node 1 262654 5651.520927 2195.798018 0.0 24948.0 S3 node 2 262654 4425.735198 1175.066566 1840.0 21554.0 S3 node 3 262654 3407.523518 597.311632 2073.0 20927.0
Jul 2017 | Apr 2017 | Jan 2017 | Oct 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
Oct 2017 Focal Temperature
The Mean (max) FPT: | |
---|---|
-113.85 | +/- 2.32 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 |
HRC
DOSE of Central 4K Pore-Pairs
Please refer to Maximum Dose Trends for more details.
IMAGE NPIX MEAN STDDEV MIN MAX HRCI_10_2017.fits 16777216 0.009 0.103 0.000 10.000
IMAGE NPIX MEAN STDDEV MIN MAX HRCI_08_1999_10_2017.fits 16777216 5.046 5.270 0.000 293.000
IMAGE NPIX MEAN STDDEV MIN MAX HRCS_10_2017.fits 16777216 0.002 0.049 0.000 4.000
IMAGE NPIX MEAN STDDEV MIN MAX HRCS_08_1999_10_2017.fits 16777216 16.660 29.781 0.000 1714.000
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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Jul 2017 | Apr 2017 | Jan 2017 | Oct 2016 |
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Jul 2017 | Apr 2017 | Jan 2017 | Oct 2016 |
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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.
Gratings Resolving Power
We plot E/dE vs. E for fits to detected lines with fwhm_error/fwhm less than 0.15 for the plus and minus arms of HEG, MEG, and LEG. Also shown are conservative (dotted line) and optimistic (dashed line) pre-launch resolving power expectations.
We have selected only calibration observations of Capella, HR1099, and Sigma Gem. See MIT technotes for a parallel analysis.
Plot symbol indicates dispersion arm: | Color indicates observation date: |
Minus side = cross (x) |
2002-2004   blue 2005-2006   yellow 2007-2009   orange |
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 Oct 2017
Sun Spot History
SIM
SIM Shift and Twist
SIM Shift and Twist Trend The following plots show trends of SIM shifts (dy and dz) and twist (dtheta). All quantities are directly taken from pcaf*_asol1.fits files. The units are mm for dy and dz, and degree for dtheta. We fit three lines separated before and after (Days of Mission)= 1400 (May 21, 2003), 2700 (Dec 11, 2006), and 4400 (Aug 07, 2011). The unit of slopes are mm per day or degree per day.
The sudden shift around DOM = 1400, 2700 and 4400 are due to fid light drift (see a memo by Aldcroft fiducial light drift). On the dtheta plot, two tracks are clearly observed. The track around 0.01 is due to HRC-I, and all others are clustered around -0.002. For more detail, please see SIM Shift and Twist Trend page
Trending
Quarterly Trends
- EPS Batteries
Previous Quarter | ||||||
MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
EB2CI | 0.31 | 9.297e-03 | 8.928e-02 | 5.216e-01 | AMP | BATT 2 CHARGE CURRENT |
EB2DI | 0.01 | 0.000e+00 | 0.000e+00 | 0.000e+00 | AMP | BATT 2 DISCHARGE CURRENT |
EB2V | 32.39 | 5.726e-02 | 7.260e-01 | 1.173e+00 | V | BATT 2 VOLTAGE |
ECNV1V | 14.89 | 2.855e-03 | -3.728e-03 | 4.174e-02 | V | CONV 1 +15V OUTPUT |
ECNV2V | 14.84 | 1.099e-02 | -8.056e-03 | 1.698e-01 | V | CONV 2 +15V OUTPUT |
ECNV3V | 15.29 | 3.201e-03 | -1.144e-02 | -6.192e-03 | V | CONV 3 +15V OUTPUT |
- Spacecraft Electronics
Previous Quarter | ||||||
MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
ELBI | 55.50 | 1.24 | -9.318e-01 | 7.955e-01 | AMP | LOAD BUS CURRENT |
ELBV | 28.65 | 0.17 | -2.111e+00 | -4.892e+00 | V | LOAD BUS VOLTAGE |
OHRMAPWR | 46.11 | 1.77 | 5.916e-01 | -2.063e+02 | W | HRMA COMPUTED TOTAL POWER |
OOBAPWR | 42.50 | 2.02 | 2.015e-01 | -1.938e+02 | W | OBA COMPUTED TOTAL POWER |
- OBA Heater
Previous Quarter | ||||||
MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
OOBTHR04 | 294.45 | 1.05 | 5.298e+00 | -2.273e+01 | K | RT 27: HRMA STRUT |
OOBTHR12 | 291.93 | 1.59 | 7.143e+00 | -6.610e+01 | K | RT 35: OBA CONE |
OOBTHR26 | 294.85 | 2.73 | 9.472e+00 | -1.336e+02 | K | RT 48: OBA CONE |
OOBTHR38 | 283.17 | 1.337e-02 | 3.475e-02 | 7.015e-01 | K | RT 60: TFTE CONE |
OOBTHR44 | 293.99 | 1.61 | 6.914e+00 | -4.602e+01 | K | RT 66: TFTE COVER |
OOBTHR50 | 288.82 | 1.65 | 7.587e+00 | -6.063e+01 | K | RT 76: S/C STRUT |
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 | |||||||||||
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2017 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | |||
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 |