- M&TA MONTHLY REPORT -

1. Configuration
2. ACIS
   1. Dose
   2. CTI
   3. Focal Plane Temperature
   4. Bad Pixels
   5. Background
   6. Bias Plots
3. HRC - Dose
4. Gratings - Focus
5. PCAD
6. Radiation Zone Timing
7. Quarterly Trends
8. Calibration Update
9. Spacecraft Motions

Configuration/Radiation Overview for Dec 2003

ACIS

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

    Statistics:
    # IMAGE     NPIX      MEAN          RMS                MIN   MAX
    ACIS_dec03 6004901    4.8694        21.800             0.0   33074.0
    
     I2 node 0  262654  3.511064        3.675343           0.0   132.0
     I2 node 1  262654  4.364358        6.910787           0.0   239.0
     I2 node 2  262654  5.193563        10.492523          0.0   325.0
     I2 node 3  262654  5.779672        14.004019          0.0   412.0
    
     I3 node 0  262654  6.465182        14.389301          0.0   411.0
     I3 node 1  262654  5.450128        10.724986          0.0   319.0
     I3 node 2  262654  4.732652        7.205562           0.0   227.0
     I3 node 3  262654  3.524420        3.571756           0.0   131.0
    
     S2 node 0  262397  5.732143        2.782728           0.0    44.0
     S2 node 1  262397  7.782181        23.980880          0.0   499.0
     S2 node 2  262397  6.309043        3.052524           0.0    59.0
     S2 node 3  262397  6.049010        2.845757           0.0    30.0
    
     S3 node 0  262397  10.638662       19.891833          0.0   563.0
     S3 node 1  262397  15.430455       49.335874          0.0   948.0
     S3 node 2  262397  7.908825        3.440330           0.0    58.0
     S3 node 3  262397  6.923917        3.147837           0.0    32.0
    

  • Jul 1999 - Dec 2003 registered-photon-map in fits
    

    
    Statistics:
     IMAGE        NPIX      MEAN          RMS              MIN    MAX
     ACIS_total 6004901   428.5576       749.2995          0.0  579993.0
    
     I2 node 0  262654  271.052864      210.282979        68.0  9447.0
     I2 node 1  262654  324.930091      444.155816       193.0  14346.0
     I2 node 2  262654  376.090065      686.074534       219.0  20019.0
     I2 node 3  262654  410.621673      909.030236         0.0  24427.0
    
     I3 node 0  262654  442.483682      912.540819       216.0  24304.0
     I3 node 1  262654  404.827400      681.737790       236.0  19259.0
     I3 node 2  262654  336.101658      441.000799        98.0  13940.0
     I3 node 3  262654  267.787340      194.881507         0.0  7790.0
    
     S2 node 0  262397  520.149320      341.668932       209.0  51629.0
     S2 node 1  262397  663.874766      1633.337263      229.0  31224.0
     S2 node 2  262397  609.709185      334.520582       304.0  158252.0
     S2 node 3  262397  591.510875      130.449722         0.0  1343.0
    
     S3 node 0  262397  1025.937964     650.959754       326.0  5012.0
     S3 node 1  262397  1261.448431     776.901527         0.0  69969.0
     S3 node 2  262397  943.503741      207.535202       327.0  27560.0
     S3 node 3  262397  815.984973      186.967828         0.0  5431.0
    

  • DEC 2003 dose PNG image
    
  • DEC I3 dose PNG image
    
  • DEC S3 dose PNG image
    
  • TOTAL JUL 1999 - DEC 2003 dose PNG image
    
  • TOTAL I3 dose PNG image
    
  • TOTAL S3 dose PNG image
    
  
  
• The Mean Detrended CTI

  Observations with cold radiator temperature deviation larger than 0.5 C
  from the nominal value of -127.92905 C are dropped (after DOM 200).
  
  
  Mean CTI observed when FPT~ -119 C and no testing modes (Squeegy, cuckoo, etc.) (average of 4 nodes per chip).
  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: Unit is cti/day from this month report. 
  
  Front Side Illuminated S Array
  
  	Node 0		Node 1		Node 2		Node 3
  
  CCD4	8.670e-9        1.124e-8        1.159e-8        1.007e-8
  CCD6	1.010e-8        1.102e-8        1.138e-8        1.038e-8
  CCD8	7.635e-9        8.518e-9        7.826e-9        7.358e-9
  CCD9	8.558e-9        1.081e-8        1.005e-8        7.207e-9
  
  AVG	8.621e-9
  
  
  
  Front Side Illuminated I Array
  
  	Node 0		Node 1		Node 2		Node 3
  
  CCD0	7.838e-9        1.016e-8        1.010e-8        8.565e-9
  CCD1	8.482e-9        9.879e-9        9.640e-9        7.556e-9
  CCD2	8.782e-9        1.054e-8        1.023e-8        8.218e-9
  CCD3	8.419e-9        1.008e-8        1.012e-8        8.965e-9
  
  AVG	8.558e-9
  
  Back Side Illuminated S Array (not detrended)
  
  	Node 0		Node 1		Node 2		Node 3
  
  CCD5	3.590e-9       3.730e-9        3.795e-9        2.485e-9
  AVG:	3.233e-9
  
  CCD7	2.190e-9       3.065e-9        3.192e-9        2.075e-9
  AVG	2.674e-9
  
  

• Focal Plane Temperature

    
         The Mean (max) FPT: -118.00      std dev: 1.26
                 mean width:    0.62 days std dev: 0.52 
  

  
  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



• 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.
  CCDS 0, 2 and 8 are the most extreme.
  
  An example of Overclock values as reported in FITS file header:
  An example of mean bias minus overclock value:
  TOP

HRC

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


• DEC HRC-I dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCI_12_2003.fits          16777216  0.01875   0.15989     0.0       19.0
  

• SEP 1999 - DEC 2003 HRC-I dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCI_08_1999_12_2003.fits  16777216  1.62290   3.661351    0.0       466.0
  

  
  
• DEC HRC-S dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCS_12_2003.fits          16777216  0.080419  0.373853    0.0       36.0
  

  
  
• SEP 1999 - DEC 2003 HRC-S dose fits image

          IMAGE                NPIX      MEAN     STDDEV      MIN      MAX
  HRCS_08_1999_12_2003.fits  16777216  5.551422  13.630212    0.0      1848.0
  

  
  
• DEC HRC-I dose PNG image
  
• SEP 1999 - DEC 2003 HRC-I dose PNG image
  
• DEC HRC-S dose PNG image
  
• SEP 1999 - DEC 2003 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).


Dec 2003 Timing Plots       Entire Mission Timing Plots

Quarterly Trends

During November-December we had the first clear indication of degraded EPHIN performance due to high temperature. For now, mission planning is avoiding the bad sun pitch angles of 80-110 degrees for extended periods.
EPHIN Temperatures and Voltages


Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
HKP27I	6.325e+00	1.122e+00	-3.047e+00	4.643e+01	AMP	HK 27 Volts Rail - Current
HKP27V	2.614e+01	2.686e+00	-8.310e-01	9.015e+01	V	HK 27 Volts Rail - Voltage
TEPHIN	3.033e+02	6.783e+00	-1.880e+01	2.974e+02	K	EPHIN SENSOR HOUSING TEMP

Starting on Dec 21, it seems the OBA Zone 50 heater has been stuck on. For now, no action is needed immediately, but a review is underway. Here we show thermistor trends. RT 40 is farthest from RT 50 at +X end of OBA. RT 42 is in the middle of OBA, and RT 50 is at -X end.
OBA Heaters


Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
OOBTHR18	2.848e+02	2.349e-01	-8.164e-03	2.752e+01	K	RT 40: OBA CONE
OOBTHR20	2.840e+02	3.569e-01	1.238e+00	6.549e+01	K	RT 42: OBA CONE
OOBTHR28	2.837e+02	9.063e-01	6.846e+00	2.066e+02	K	RT 50: OBA CONE

An oxygen rich supernova remnant, E0102 is observed every 6 months at various chip positions to monitor low energy response. We report a simple count rate with background subtraction in 3 energy bands.

Reaction Wheel Rotations

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