- M&TA MONTHLY REPORT -

OUTLINE

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

• Configuration/Radiation Overview for Jul 2002
  

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• ACIS

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

      Statistics:
      # IMAGE     NPIX      MEAN          RMS              MIN    MAX
      ACIS_jul02 6004901    9.417         13.593            0.0    60099.0
      
       I2 node 0  262654  5.822013        4.247400           0.0   162.0
       I2 node 1  262654  6.812670        7.874004           0.0   276.0
       I2 node 2  262654  7.726538        11.727063          0.0   374.0
       I2 node 3  262654  8.226100        15.170998          0.0   458.0
      
       I3 node 0  262654  8.735561        15.048903          0.0   437.0
       I3 node 1  262654  8.326867        11.536211          0.0   363.0
       I3 node 2  262654  7.043041        7.630521           0.0   264.0
       I3 node 3  262654  5.830678        3.974524           0.0   138.0
      
       S2 node 0  262397  11.539629       3.795226           0.0    80.0
       S2 node 1  262397  14.205471       31.117212          0.0   609.0
       S2 node 2  262397  12.727261       5.722722           0.0  2062.0
       S2 node 3  262397  12.910982       4.115611           0.0    39.0
      
       S3 node 0  262397  27.655091       16.835204          2.0   234.0
       S3 node 1  262397  26.940617       15.524998          0.0   351.0
       S3 node 2  262397  20.654847       4.862022           1.0    81.0
       S3 node 3  262397  18.531428       5.048380           0.0   268.0
      
      

    • Jul 1999 - Jul 2002 registered-photon-map in fits
      

      
      Statistics:
       IMAGE        NPIX      MEAN          RMS              MIN    MAX
       ACIS_total 6004901   311.44         564.75            0.0   462553.0
      
       I2 node 0  262654  193.680526      153.633088        54.0  9369.0
       I2 node 1  262654  232.277818      323.653170       131.0  10451.0
       I2 node 2  262654  266.089799      500.368273       156.0  14636.0
       I2 node 3  262654  287.676929      660.855183         0.0  17868.0
      
       I3 node 0  262654  306.441067      651.687865       159.0  17437.0
       I3 node 1  262654  280.732888      487.350577       157.0  13843.0
       I3 node 2  262654  236.295800      314.920246        63.0  10074.0
       I3 node 3  262654  188.863429      138.686945         0.0  5584.0
      
       S2 node 0  262397  372.666593      337.501494       129.0  51486.0
       S2 node 1  262397  471.735355      1202.784953      146.0  23235.0
       S2 node 2  262397  423.299699      308.195351       184.0  151526.0
       S2 node 3  262397  413.486690      87.664809          0.0   917.0
      
       S3 node 0  262397  800.611832      622.035018       219.0  4669.0
       S3 node 1  262397  976.510002      700.278600         0.0  69619.0
       S3 node 2  262397  694.895982      170.260091       223.0  3318.0
       S3 node 3  262397  590.283551      144.996118         0.0  4102.0
      

    • JUL 2002 dose GIF image
      
    • JUL I3 dose GIF image
      
    • JUL S3 dose GIF image
      
    • TOTAL JUL 1999 - JUL 2002 dose GIF image
      
    • TOTAL I3 dose GIF image
      
    • TOTAL S3 dose GIF 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	1.053e-8        1.295e-8        1.434-e8        1.247e-8
    CCD6	1.137e-8        1.285e-8        1.270e-8        1.165e-8
    CCD8	9.775e-9        1.106e-8        9.415e-9        9.116e-9
    CCD9	1.012e-8        1.301e-8        1.250e-8        9.134e-9
    
    AVG	1.049e-8
    
    
    Front Side Illuminated I Array
    
    	Node 0		Node 1		Node 2		Node 3
    
    CCD0	1.059e-8        1.241e-8        1.303e-8        1.061e-8
    CCD1	1.044e-8        1.264e-8        1.189e-8        9.563e-9
    CCD2	1.093e-8        1.345e-8        1.281e-8        9.468e-9
    CCD3	1.001e-8        1.159e-8        1.180e-8        1.097e-8
    
    AVG	1.024e-8
    
    Back Side Illuminated S Array (not detrended)
    
    	Node 0		Node 1		Node 2		Node 3
    
    CCD5	4.848e-9      5.453e-9        4.236e-9         3.330e-9
    AVG:	4.527e-9
    
    CCD7	2.827e-9       4.098e-9        4.160e-9        2.812e-9
    AVG	3.544e-9
    
    

  • Focal Plane Temperature

      
           The Mean (max) FPT: -113.11      std dev: 1.85
                   mean width:    0.42      std dev: 0.18 
    
    

    DOY	Focal Temp	S.D.
    182.44	-114.22	0.31
    185.04	-110.66	0.79
    187.75	-116.15	0.25
    190.39	-114.05	0.40
    192.99	-109.68	0.31
    195.69	-115.02	0.30
    198.34	-111.95	0.37
    200.95	-111.63	0.41
    203.60	-113.57	0.30
    206.25	-111.95	0.43
    208.91	-113.57	0.41
    211.57	-114.86	0.81

    
    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
    Many of the S1 and S3 "bad pixels" are not bad at all. The bias frames have a lot of real structure in them and since the hot pixel finder is comparing pixels to a global average across the CCD, the extremes of the bias structure are getting picked up. - Catherine Grant

    Warm pixels consistently showed a bias level more than 5 sigma away the chip's mean level during this period.

    

    Hot Pixels - About five new hot pixels observed this month.
    Previously reported:
    We define a hot pixel as a pixel with the count rate 1000 counts above the average

    Bad Pixel Report Page
    

  • 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
  
  

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• HRC

  DOSE of central 4K pore-pairs
  DOSE is now calculated in RAW coordinates instead of DET.
  • JUL HRC-I dose fits image
    

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_07_2002.fits          16777216  0.00981   0.10106     0.0       13.0
    

    
    
  • SEP 1999 - JUL 2002 HRC-I dose fits image
    

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_08_1999_07_2002.fits  16777216  1.39016   3.40766     0.0       465.0
    

    
    
  • JUL HRC-S dose fits image
    

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCS_07_2002.fits          16777216  0.07110   0.45050     0.0       38.0
    

    
    
  • AUG 1999 - JUL 2002 HRC-S dose fits image
    

            IMAGE                NPIX      MEAN     STDDEV      MIN      MAX
    HRCS_08_1999_07_2002.fits  16777216  4.52482   11.05920     0.0      1819.0
    
    

  • JUL HRC-I dose PNG image
    
  • AUG 1999 - JUL 2002 HRC-I dose PNG image
    
  • JUL HRC-S dose PNG image
    
  • AUG 1999 - JUL 2002 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.

    
  
  

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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
  
  Gyro Bias Drift
  
  

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• 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).
  
  
  Jul 2002 Timing Plots       Entire Mission Timing Plots
  

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• ACIS-S and HRC Celestial Location Monitoring

  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, dec, target ra, dec, nominal ra, dec 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
  
  
  
  

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• Spacecraft Motions

  JUL02

  Motion	Monthly total	Annual Total	Mission Total	Monthly Delta
  		Jul01 thru Jul02	Jul99 thru Jul02	current - previous
  SIM
  SIM FA (STEPS)	4726.00	65688.0	271115.	-2348.00
  SIM TSC (STEPS)	5.76696e+06	6.02952e+07	1.74058e+08	-381333.
  SIM TSC (# Moves)	64	579	1601	-2
  mean SIM TSC at ACIS-I/sdev/# obs	92903.0/ 0.00000/ 9	92903.0/ 0.103695/ 93	92951.9/ 231.069/ 273	0.00000/ -7
  mean SIM TSC at ACIS-S/sdev/# obs	75208.1/ 582.128/ 26	75416.7/ 469.031/ 209	75414.0/ 471.398/ 556	-115.422/ 6
  mean SIM TSC at HRC-I/sdev/# obs	-50504.5/ 0.707107/ 2	-50504.2/ 0.611832/ 28	-50504.4/ 0.623727/ 96	-0.167969/ -1
  mean SIM TSC at HRC-S/sdev/# obs	-99615.9/ 0.363137/ 14	-99621.4/ 46.2073/ 143	-99614.7/ 51.6298/ 423	0.0703125/ 0
  GRATINGS
  No. HETG insertions	6.00000	48.0000	135.000	0.00000
  No. LETG insertions	1.00000	22.0000	79.0000	-3.00000
  mean HETG inserted angles/sdev (A)	6.33750/ 0.00000	6.33750/ 0.00000	6.61736/ 0.346141	0.00000
  mean HETG inserted angles/sdev (B)	6.11250/ 0.0421875	6.30558/ 0.0111876	6.43473/ 0.117460	-0.162500
  mean LETG inserted angles/sdev (A)	7.08750/ 0.00000	7.08750/ 0.00000	8.38380/ 5.72361	0.00000
  mean LETG inserted angles/sdev (B)	4.46250/ 0.00000	4.46250/ 0.00000	4.55269/ 0.0476509	0.00000
  mean HETG retracted angles/sdev (A)	79.4625/ 0.00000	79.7515/ 0.0253698	80.3153/ 0.641058	0.00000
  mean HETG retracted angles/sdev (B)	80.5250/ 0.0234375	80.5875/ 0.00000	80.9984/ 0.495581	0.00000
  mean LETG retracted angles/sdev (A)	78.7125/ 0.00000	79.0875/ 0.00000	80.1365/ 2.24416	-0.281250
  mean LETG retracted angles/sdev (B)	78.3375/ 0.00000	78.3375/ 0.00000	78.9688/ 0.705088	0.0937500
  Reaction Wheel Rotations		Past 12 Months	Jan00 thru current
  AORWDAY1	8.82364e+07	9.77790e+08	2.50536e+09	7.69275e+06
  AORWDAY2	8.34682e+07	9.21080e+08	2.40853e+09	5.01497e+06
  AORWDAY3	8.90087e+07	1.02641e+09	2.65067e+09	7.61341e+06
  AORWDAY4	8.92479e+07	9.32158e+08	2.47171e+09	1.94018e+07
  AORWDAY5	8.24570e+07	9.45462e+08	2.42326e+09	-6.69405e+06
  AORWDAY6	8.99160e+07	1.00585e+09	2.63138e+09	1.70750e+07

  
  

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  Previous Months

  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

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