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.
-
Note: Counts and RMS's of Cumulative maps are lower than the previous months.
This is because we excluded extreme outliers.
Please check more detail plots at Telemetered Photon Dose Trend page.
)
)
)
Statistics: # IMAGE NPIX MEAN RMS MIN MAX ACIS_dec09 6004901 10.470 12.828 0.0 520.0 I2 node 0 262654 21.518654 16.594697 0.0 236.0 I2 node 1 262654 17.295205 8.350618 0.0 311.0 I2 node 2 262654 19.029469 11.564777 0.0 193.0 I2 node 3 262654 13.669135 6.263128 0.0 56.0 I3 node 0 262654 13.228977 4.727910 0.0 49.0 I3 node 1 262654 13.107212 9.494005 0.0 235.0 I3 node 2 262654 12.108650 4.939319 0.0 63.0 I3 node 3 262654 12.038189 5.293179 0.0 127.0 I2 node 0 262654 10.280097 3.745339 0.0 162.0 I2 node 1 262654 10.960594 4.306268 0.0 70.0 I2 node 2 262654 11.998212 4.274186 0.0 311.0 I2 node 3 262654 12.035040 3.917749 0.0 453.0 I3 node 0 262654 14.385578 8.213443 0.0 134.0 I3 node 1 262654 14.183680 4.715449 0.0 75.0 I3 node 2 262654 13.967230 4.307007 0.0 48.0 I3 node 3 262654 12.703618 4.042312 0.0 48.0
)
)
)
Statistics: IMAGE NPIX MEAN RMS MIN MAX ACIS_total 6004901 1342.48 1813.72 0.0 81600.0 I2 node 0 262654 1075.183422 203.386095 0.0 5018.0 I2 node 1 262654 1133.657060 271.095391 0.0 19785.0 I2 node 2 262654 1172.759846 256.711232 0.0 8638.0 I2 node 3 262654 1165.823347 298.389532 0.0 27457.0 I3 node 0 262654 1230.646701 303.840353 0.0 5989.0 I3 node 1 262654 1290.566883 935.567558 0.0 24327.0 I3 node 2 262654 1113.308431 197.383836 0.0 4980.0 I3 node 3 262654 1098.763409 210.308917 0.0 20133.0 I2 node 0 262654 1605.393624 215.475565 802.0 19922.0 I2 node 1 262654 1704.440410 354.414070 833.0 9069.0 I2 node 2 262654 1890.042770 347.530671 1075.0 12894.0 I2 node 3 262654 1824.662554 251.218218 1047.0 26205.0 I3 node 0 262654 12.033271 3.819661 0.0 247.0 I3 node 1 262654 14.383575 8.200992 0.0 123.0 I3 node 2 262654 14.182579 4.710484 0.0 65.0 I3 node 3 262654 13.966881 4.306291 0.0 39.0
)
|
)
|
)
|
)
|
| Aug 2009 | May 2009 | Feb 2009 | Dec 2008 |
|---|
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
Focal Plane Temperature
Decmber 2009 Focal Temperature
| The Mean (max) FPT: | |
|---|---|
| -111.25 | +/- 5.31 C |
| Mean Width: | |
| 0.44 | +/- 0.34 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 and Sun Angle, Earth Engle, 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 |
NOTE:
Many sources observed during December had very high dose, and could not be used to compute science instrument background rates. Consequently, the plots for December are very spersely ploted.
HRC
DOSE of Central 4K Pore-Pairs
Please refer to Maximum Dose Trends for more details.
)
IMAGE NPIX MEAN STDDEV MIN MAX
HRCI_12_2009.fits 16777216 0.303 0.757 0.0 13.0
)
IMAGE NPIX MEAN STDDEV MIN MAX
HRCI_08_1999_12_2009.fits 16777216 3.134 3.997 0.0 292.0
)
IMAGE NPIX MEAN STDDEV MIN MAX
HRCS_12_2009.fits 16777216 0.303 0.721 0.0 23.0
)
IMAGE NPIX MEAN STDDEV MIN MAX
HRCS_08_1999_12_2009.fits 16777216 12.795 20.983 0.0 1578.0
|
|
Max dose trend plots corrected for events that "pile-up"
in the center of the taps due to bad position information.
|
)
|
)
|
)
|
)
|
| Mar 2009 | May 2009 | Feb 2009 | Dec 2008 |
|---|
)
|
)
|
)
|
)
|
| Mar 2009 | May 2009 | Feb 2009 | Dec 2008 |
|---|
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. (NOTE: the figures are not updated from Mar 2009 due to a system problem.)
PCAD
ACA Trending
Fid Light Drift
Fid light positions on ACA drift with time. The drift trends of Fid light 2 with ACIS-I and ACIS-S configurations are shown below.
The top panel shows Fid light 2 drift in ACENT I (app. along with -Y axis), and the
bottom panel shows that in ACENT J (app. along with Z axis). The unit is a pixel, and
one pixel is approximately 0.5 arcsec. The slope listed at the top right corner is
the change in a position per year (arcsec/yr). The vertical line on DOM = 1411 (Jun 1, 2003)
indicates a transition date of use of IRU-1 to IRU-2.
See also Tom Aldcroft's updated page:
https://cxc.cfa.harvard.edu/mta/ASPECT/fid_drift
Fid 2 (ACIS-I)
Fid 2 (ACIS-S)
Fid 8 (HRC-I)
Fid 12 (HRC-S)
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 Dec 2009
Sun Spot History
Trending
Critical Trends
| ACIS Temperatures - Daily Maximums | ||||||
|---|---|---|---|---|---|---|
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| 1PDEAAT | 307.53 | 7.94 | -8.464e-01 | 3.217e-01 | K | PSMC DEA PS A TEMP |
| 1PIN1AT | 293.52 | 7.03 | -5.978e-01 | 6.210e-01 | K | PSMC TEMP 1A |
| HRMA Computed Averages - Daily Maximums | ||||||
| OBAAVG | 284.57 | 0.80 | 2.657e-01 | 1.508e-02 | K | OBA/TFTE TEMP |
| EPHIN Temperatures - Daily Maximums | ||||||
| TEIO | 312.22 | 17.31 | 1.874e+00 | 2.964e+00 | K | EPHIN ELECTRONICS HOUSING TEMP |
| TEPHIN | 309.06 | 7.52 | 2.724e+00 | 3.603e-01 | K | EPHIN SENSOR HOUSING TEMP |
| SIM EQ Temperatures - Daily Maximums | ||||||
| 3TRMTRAT | 3.23 | 10.29 | -1.288e+00 | -7.485e+00 | TEMP | SEA A TRANSLATION DRIVE MOTOR |
| S/C Main Temperatures - Daily Maximums | ||||||
| TCYLFMZM | 296.70 | 22.55 | 5.776e-01 | -1.904e+00 | K | CNT CYL TEMP:-Z SIDE UNDER LAE-1 |
| TCYLFMZP | 299.41 | 21.48 | 5.240e-01 | -1.837e+00 | K | CNT CYL TEMP:-Z SIDE UNDER LAE-2 |
| S/C Ancillary Temperatures - Daily Maximums | ||||||
| TFSSBKT1 | 326.61 | 18.98 | 1.287e+00 | 2.426e+00 | K | FSS BRACKET-1 TEMP (+Y) |
| TFSSBKT2 | 322.70 | 23.14 | 6.487e-01 | 3.007e+00 | K | FSS BRACKET-2 TEMP (+Y) |
| TSCTSF1 | 289.24 | 3.68 | 9.408e-01 | -1.529e-02 | K | SC-TS FITTING -1 TEMP |
| TSCTSF6 | 288.89 | 4.10 | 1.069e+00 | 9.358e-02 | K | SC-TS FITTING -6 TEMP |
| MUPS - Daily Maximums | ||||||
| PM1THV1T | 330.71 | 9.47 | 1.563e+00 | -1.452e+00 | K | MUPS 1 THRUSTER VALVE 01 TEMP |
| PLINE02T | 308.28 | 10.34 | 1.724e+00 | 1.296e-01 | K | PROP LINE TEMP 02 |
| PLINE03T | 309.74 | 10.60 | 1.153e+00 | 7.349e-01 | K | PROP LINE TEMP 03 |
| PLINE04T | 297.95 | 9.71 | 3.999e-02 | 3.363e-01 | K | PROP LINE TEMP 04 |
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
Quarterly Trends
| Ephin Temperature/Voltage | ||||||
|---|---|---|---|---|---|---|
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| HKEBOXTEMP | 320.13 | 3.75 | -2.972e-01 | 1.821e+02 | K | EPHIN HOUSEKEEPING EBOX: TEMPERATURE (5EHSE300) |
| HKN6I | 73.16 | 0.31 | -9.759e-03 | 1.168e+01 | AMP | HK 6 Volts Rail - Current |
| TEIO | 313.60 | 18.67 | -3.086e+01 | 3.492e+02 | K | EPHIN ELECTRONICS HOUSING TEMP |
| TEPHIN | 315.58 | 3.85 | -1.221e+00 | 1.851e+02 | K | EPHIN SENSOR HOUSING TEMP |
){kind=link}
){kind=link}
){kind=link}
){kind=link}
| MUPS | ||||||
|---|---|---|---|---|---|---|
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| PLINE01T | 288.78 | 1.95 | -1.170e+00 | 1.955e+01 | K | PROP LINE TEMP 01 |
| PLINE02T | 314.21 | 9.49 | -1.930e+01 | 4.440e+02 | K | PROP LINE TEMP 02 |
| PLINE03T | 313.78 | 12.21 | -2.748e+01 | 5.528e+02 | K | PROP LINE TEMP 03 |
| PLINE04T | 298.94 | 9.84 | -2.362e+01 | 4.601e+02 | K | PROP LINE TEMP 04 |
| PLINE05T | 297.91 | 6.68 | -2.029e+01 | 3.734e+02 | K | PROP LINE TEMP 05 |
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
| SIM Temperature | ||||||
|---|---|---|---|---|---|---|
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| 3FLCABPT | 280.47 | 3.17 | -2.124e+00 | -3.784e-13 | K | FLCA BASEPLATE (+X) |
| 3TSMXCET | 223.57 | 27.28 | 2.608e+01 | 4.875e-13 | K | -X TURTLE SHELL NR HRC CEA |
| 3TSMXSPT | 263.59 | 24.26 | 2.923e+01 | 9.633e-12 | K | -X TURTLE SHELL NR ACIS SS |
| 3TSPZDET | 264.82 | 8.02 | -3.844e+00 | 5.909e-13 | K | +Z TURTLE SHELL NR ACIS DEA |
| 3TSPZSPT | 268.40 | 7.37 | -2.235e+00 | -3.891e-13 | K | +Z TURTLE SHELL NR ACIS SS |
){kind=link}
){kind=link}
){kind=link}
){kind=link}
){kind=link}
| Spacecraft Main Temperature | ||||||
|---|---|---|---|---|---|---|
| MSID | MEAN | RMS | DELTA/YR | DELTA/YR/YR | UNITS | DESCRIPTION |
| TCYLAFT1 | 295.62 | 3.38 | -8.635e+00 | 2.631e+02 | K | CNT CYL TEMP:16-IN FWD OF SC-TS FIT-1 |
| TCYLAFT6 | 295.46 | 3.75 | -9.848e+00 | 3.102e+02 | K | CNT CYL TEMP:16-IN FWD OF SC-TS FIT-6 |
| TSAMYT | 321.33 | 1.01 | 1.049e+01 | -5.461e+01 | K | -Y WING SOLAR ARRAY TEMP |
| TSAPYT | 320.89 | 1.02 | 1.063e+01 | -5.547e+01 | K | +Y WING SOLAR ARRAY TEMP |
){kind=link}
){kind=link}
){kind=link}
){kind=link}
Spacecraft Motions
|
|
Reaction Wheel Rotations
Links to Past Monthly Reports
| Year | Month | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | Jul | Aug | Sep | Oct | Nov | Dec | ||||||
| 2000 | 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 |
| 2002 | 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 |
| 2004 | 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 |
| 2006 | 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 |
| 2008 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2009 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | |