- M&TA MONTHLY REPORT -

1. Configuration
2. ACIS
   1. Dose
   2. CTI
   3. Focal Plane Temperature
   4. Bad Pixels
   5. Background
3. HRC - Dose
4. Gratings - Focus
5. PCAD
6. Radiation Zone Timing
7. Quarterly Trends
8. ACIS-S and HRC Celestial Location Monitoring
9. Spacecraft Motions

Configuration/Radiation Overview for Feb 2004

ACIS

• ACIS DOSE registered-photon-map
  • FEB registered-photon-map in fits
    

    Statistics:
    # IMAGE     NPIX      MEAN          RMS                MIN   MAX
    ACIS_feb04 6004901    7.5344        24.762             0.0   36841.0
    
     I2 node 0  262654  3.664981        3.658252           0.0   135.0
     I2 node 1  262654  4.580619        6.972105           0.0   239.0
     I2 node 2  262654  5.336233        10.385573          0.0   338.0
     I2 node 3  262654  5.820715        13.619817          0.0   400.0
    
     I3 node 0  262654  6.532156        14.829506          0.0   440.0
     I3 node 1  262654  5.955554        11.339366          0.0   360.0
     I3 node 2  262654  4.872776        7.424716           0.0   253.0
     I3 node 3  262654  3.736635        3.613769           0.0   130.0
    
     S2 node 0  262397  6.459586        3.071996           0.0   426.0
     S2 node 1  262397  8.580967        25.398876          0.0   521.0
     S2 node 2  262397  6.854080        3.111807           0.0    85.0
     S2 node 3  262397  6.414136        2.900000           0.0    23.0
    
     S3 node 0  262397  15.496252       21.699951          0.0   300.0
     S3 node 1  262397  36.412101       39.147301          0.0   508.0
     S3 node 2  262397  35.245395       38.741481          0.0   272.0
     S3 node 3  262397  9.421381        3.920590           0.0    54.0
    
    

  • Jul 1999 - Feb 2004 registered-photon-map in fits
    

    
    Statistics:
     IMAGE        NPIX      MEAN          RMS              MIN    MAX
     ACIS_total 6004901   446.7562       783.7101          0.0  597293.0
    
     I2 node 0  262654  281.290291      217.394354        69.0  9453.0
     I2 node 1  262654  337.861559      460.006820       199.0  14900.0
     I2 node 2  262654  391.115296      711.122345       228.0  20762.0
     I2 node 3  262654  426.250219      940.561065         0.0  25285.0
    
     I3 node 0  262654  460.067914      945.767744       225.0  25165.0
     I3 node 1  262654  421.069270      708.158754       248.0  20007.0
     I3 node 2  262654  349.728316      457.667712       102.0  14432.0
     I3 node 3  262654  278.459803      201.962480         0.0  8018.0
    
     S2 node 0  262397  537.155371      342.255274       220.0  51649.0
     S2 node 1  262397  685.340522      1685.666542      236.0  32145.0
     S2 node 2  262397  627.979794      335.009358       317.0  158303.0
     S2 node 3  262397  609.571916      131.269279         0.0  1366.0
    
     S3 node 0  262397  1060.297389     656.048161       337.0  5049.0
     S3 node 1  262397  1344.968281     799.610633         0.0  70106.0
     S3 node 2  262397  1013.256463     246.466822       341.0  27763.0
     S3 node 3  262397  842.502544      189.555935         0.0  5515.0
    
    

  • FEB 2004 dose PNG image
    
  • FEB I3 dose PNG image
    
  • FEB S3 dose PNG image
    
  • TOTAL JUL 1999 - FEB 2004 dose PNG image
    
  • TOTAL I3 dose PNG image
    
  • TOTAL S3 dose PNG image
    
  
  
• The Mean Detrended CTI

  From this month, we report CTIs with a refined data definition. CTIs were computed for the data taken during the focal plane temperature < -119.7 C, and the integration time longer than 7,000 sec. This eliminates a CTI temperature dependency, and the shows CTI degradation with time much more cleanly. Please see new 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

  
  
  CTI Slope (after DOM 200)

  CTI slopes were computed for data point after DOM 200 and inside of 1 sigma deviation. Using only data point in 1 sigma range, we drop high temperature observations, squeegy observations, and other outliers. A independent variable is date, and a dependent variable is CTI.

  Note: Because of refined data sets, the fittings are much better and CTI slope values are quite different from the last month (about 0.5e-9 differences in many cases).

  
  Front Side Illuminated S Array
  
  	Node 0		Node 1		Node 2		Node 3
  
  CCD4	9.579e-9        1.214e-8        1.243e-8        1.109e-8
  CCD6	9.143e-9        9.681e-9        9.974e-9        9.192e-9
  CCD8	8.029e-9        8.747e-9        8.250e-9        7.899e-9
  CCD9	9.109e-9        1.078e-8        1.084e-8        7.658e-9
  
  AVG	9.080e-9
  
  
  
  Front Side Illuminated I Array
  
  	Node 0		Node 1		Node 2		Node 3
  
  CCD0	6.909e-9        8.606e-9        8.930e-9        7.341e-9
  CCD1	7.336e-9        8.332e-9        8.286e-9        6.388e-9
  CCD2	7.369e-9        8.720e-9        8.405e-9        6.872e-9
  CCD3	6.943e-9        8.608e-9        8.584e-9        7.554e-9
  
  AVG	7.323e-9
  
  Back Side Illuminated S Array (not detrended)
  
  	Node 0		Node 1		Node 2		Node 3
  
  CCD5	3.283e-9       3.537e-9        3.562e-9        2.459e-9
  AVG:	3.109e-9
  
  CCD7	2.120e-9       2.978e-9        3.109e-9        1.999e-9
  AVG	2.561e-9
  
  

• Focal Plane Temperature

    
         The Mean (max) FPT: -116.96      std dev: 2.19
                 mean width:    0.66 days std dev: 0.39 
  

  
  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.
  

• 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)
  

• Acis Count Rate Plot
  This monitors the ACIS count Rate vs. EPHIN count Rate.
  No sources are removed. For daily updates see: Ephin/Acis Info

HRC

DOSE of central 4K pore-pairs
DOSE is now calculated in RAW coordinates instead of DET.


• FEB HRC-I dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCI_02_2004.fits          16777216  0.00726   0.08908     0.0       7.0
  

• SEP 1999 - FEB 2004 HRC-I dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCI_08_1999_02_2004.fits  16777216  1.63235   3.671407    0.0       466.0
  

  
  
• FEB HRC-S dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCS_02_2004.fits          16777216  0.049439  0.239132    0.0       15.0
  

  
  
• SEP 1999 - FEB 2004 HRC-S dose fits image

          IMAGE                NPIX      MEAN     STDDEV      MIN      MAX
  HRCS_08_1999_02_2004.fits  16777216  5.625656  13.694710    0.0      1848.0
  

  
  
• FEB HRC-I dose PNG image
  
• SEP 1999 - FEB 2004 HRC-I dose PNG image
  
• FEB HRC-S dose PNG image
  
• SEP 1999 - FEB 2004 HRC-S dose PNG image
  
  
  See Maximum Dose Trends
  

  We display a max dose trend plot corrected for events that "pile-up" in the center of the taps due to bad position information.

  

• 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.
  
  
  

ACA Trending

Gyro Bias Drift

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).


Feb 2004 Timing Plots       Entire Mission Timing Plots

The following plots are the difference between coordinates obtained from Chandra observations and those obtained from existing catalogs vs time in day of mission. The following steps are taken to generate these plots

* all observations with grating are selected
* observed ra, jan, target ra, jan, nominal ra, jan and a ratio of a target elliptical to psf (psfratio ) are extracted from src fits files.
* the observations with psfratio smaller than 4 are selected
* the differences between observed coordinates and targeted coordinates (if not available nominal coordinates) are computed
* if the differences are larger than 6 arcsec, the points are dropped

Quarterly Trends

• EPHIN Temperatures and Voltages

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
HKP27I	6.051e+00	9.786e-01	-2.377e-01	-8.527e+01	AMP	HK 27 Volts Rail - Current
HKP27V	2.686e+01	5.957e-02	1.965e-02	4.501e+00	V	HK 27 Volts Rail - Voltage
TEPHIN	3.016e+02	6.187e+00	1.987e+00	-4.971e+02	K	EPHIN SENSOR HOUSING TEMP



• IRU Temperatures and Voltages

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
AIRU2G1I	1.039e+02	1.067e+00	-9.752e+00	6.742e+01	MAMP	IRU-2 GYRO #1 CURRENT
AIRU2G2I	9.886e+01	5.353e-01	5.569e+00	3.449e+01	MAMP	IRU-2 GYRO #2 CURRENT



• Battery Usage

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
EB1V	3.267e+01	1.133e-01	-1.014e+00	4.293e+00	V	BATT 1 VOLTAGE
EB2V	3.267e+01	1.166e-01	-1.070e+00	5.679e+00	V	BATT 2 VOLTAGE
EB3V	3.239e+01	1.181e-01	-1.095e+00	5.562e+00	V	BATT 3 VOLTAGE



• OBA Heaters

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
OOBTHR18	2.848e+02	2.791e-01	8.843e-01	-3.912e+01	K	RT 40: OBA CONE
OOBTHR20	2.844e+02	5.706e-01	2.939e+00	-1.005e+02	K	RT 42: OBA CONE
OOBTHR28	2.853e+02	1.249e+00	1.242e+01	-2.640e+02	K	RT 50: OBA CONE

Reaction Wheel Rotations

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