- M&TA MONTHLY REPORTS -

OUTLINE

1. Overview
2. ACIS
   1. Dose
   2. CTI
   3. Focal Plane Temperature
   4. Bad Pixels
   5. Background
3. HRC -Dose
4. Gratings
   1. Focus
   2. Resolving Power
5. PCAD
6. Radiation Zone Timing
7. Spacecraft Motions

• Configuration/Radiation Overview for April 2002
  

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• ACIS

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

      Statistics:
      # IMAGE     NPIX      MEAN          RMS              MIN    MAX
      ACIS_apr02 6004901    6.133         13.933            0.0   13572.0
      
       I2 node 0  262654  4.685819        4.393234           0.0   166.0
       I2 node 1  262654  5.637017        8.493830           0.0   308.0
       I2 node 2  262654  6.487889        12.924521          0.0   389.0
       I2 node 3  262654  6.754316        16.238332          0.0   472.0
      
       I3 node 0  262654  7.018085        16.442581          0.0   470.0
       I3 node 1  262654  6.449344        12.927049          0.0   396.0
       I3 node 2  262654  5.364419        8.507104           0.0   302.0
       I3 node 3  262654  3.958287        4.026689           0.0   158.0
      
       S2 node 0  262397  7.664078        4.259076           0.0    76.0
       S2 node 1  262397  10.038792       27.349570          0.0   540.0
       S2 node 2  262397  10.120954       10.357176          0.0  2571.0
       S2 node 3  262397  9.655312        8.898565           0.0   110.0
      
       S3 node 0  262397  9.335610        7.195054           0.0   141.0
       S3 node 1  262397  13.734620       13.156727          0.0   135.0
       S3 node 2  262397  11.891687       11.222230          0.0   141.0
       S3 node 3  262397  11.813020       12.276834          0.0   521.0
      

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

      
      Statistics:
       IMAGE        NPIX      MEAN          RMS              MIN    MAX
       ACIS_total 6004901   288.02         529.18            0.0   445432.0
      
       I2 node 0  262654  176.848447      141.338597        45.0  9352.0
       I2 node 1  262654  211.988003      297.728893       116.0  9609.0
       I2 node 2  262654  242.444703      460.147254       140.0  13474.0
       I2 node 3  262654  261.925887      608.340511         0.0  16522.0
      
       I3 node 0  262654  279.766084      600.491532       145.0  16114.0
       I3 node 1  262654  256.412006      448.291756       139.0  12826.0
       I3 node 2  262654  215.763415      289.848878        56.0  9278.0
       I3 node 3  262654  172.430384      127.455487         0.0  5119.0
      
       S2 node 0  262397  341.962930      336.721782       116.0  51461.0
       S2 node 1  262397  432.888128      1106.839689      133.0  21537.0
       S2 node 2  262397  389.833817      292.394344       166.0  143660.0
       S2 node 3  262397  380.497631      83.300761          0.0   837.0
      
       S3 node 0  262397  747.789571      617.590596       196.0  4636.0
       S3 node 1  262397  921.572987      691.213761         0.0  69544.0
       S3 node 2  262397  648.870235      166.970062       207.0  3262.0
       S3 node 3  262397  548.303632      141.196480         0.0  3033.0
      

    • APR 2002 dose GIF image
      
    • APR I3 dose GIF image
      
    • APR S3 dose GIF image
      
    • TOTAL JUL 1999 - APR 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	9.767e-9        1.255e-8        1.448e-8        1.234e-8
    CCD6	1.178e-8        1.435e-8        1.396e-8        1.263e-8
    CCD8	9.577e-9        1.083e-8        9.835e-9        9.042e-9
    CCD9	1.063e-8        1.325e-8        1.250e-8        9.043e-9
    
    AVG	9.834e-9
    
    
    Front Side Illuminated I Array
    
    	Node 0		Node 1		Node 2		Node 3
    
    CCD0	9.713e-9        1.324e-8        1.283e-8        1.040e-8
    CCD1	1.039e-8        1.205e-8        1.238e-8        9.833e-9
    CCD2	1.072e-8        1.304e-8        1.290e-8        9.320e-9
    CCD3	1.004e-8        1.192e-8        1.214e-8        1.080e-8
    
    AVG	1.034e-8
    
    Back Side Illuminated S Array (not detrended)
    
    	Node 0		Node 1		Node 2		Node 3
    
    CCD5	5.190e-9      6.288e-9        5.879e-9         3.046e-9
    AVG:	4.830e-9
    
    CCD7	3.030e-9       4.457e-9        4.561e-9        2.597e-9
    AVG	3.846e-9
    
    

  • Focal Plane Temperature

      
           The Mean (max) FPT: -114.04      std dev: 2.42
                   mean width:    0.36      std dev: 0.18 
    
    

    DOY	Focal Temp	S.D.
    89.84	-118.25	0.14
    92.42	-114.05	0.80
    95.03	-114.70	0.58
    97.76	-109.05	0.46
    100.36	-117.12	0.21
    103.00	-114.70	0.28
    105.68	-112.11	0.30
    108.36	-113.25	0.24
    110.94	-114.70	0.36
    113.57	-114.05	0.40
    116.22	-111.63	0.39
    118.90	-114.86	0.20

    
    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 - No new hot pixels observed this month.
    Previously reported:
    Pixel 1022,166 of Quad 4 CCD 5. 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.
  • APR HRC-I dose fits image
    

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_04_2002.fits          16777216  0.02111   0.14904     0.0       8.0
    

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

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_08_1999_04_2002.fits  16777216  1.36544   3.37406     0.0        464.0
    

    
    
  • APR HRC-S dose fits image
    

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCS_04_2002.fits          16777216  0.00263   0.05934     0.0       10.0
    

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

            IMAGE                NPIX      MEAN     STDDEV      MIN      MAX
    HRCS_08_1999_04_2002.fits  16777216  4.42420   10.77406     0.0      1819.0
    
    

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

  • Gratings Resolving Power

    We plot E/dE vs. E for fits to detected lines with fwhm_error/fwhm less than 0.1 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.

    Plot symbol indicates dispersion arm:	Color indicates observation date:
    Plus side = plus (+) Minus side = cross (x)	1999   green 2000   blue 2001   yellow 2002   red

    
  
  
  

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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).
  
  
  Apr 2002 Timing Plots       Entire Mission Timing Plots
  

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• Spacecraft Motions

  APR02

  Motion	Monthly total	Annual Total	Mission Total	Monthly Delta
  		May01 thru Apr02	Jul99 thru Apr02	current - previous
  SIM
  SIM FA (STEPS)	4906.00	65792.0	256625.	146.000
  SIM TSC (STEPS)	5.18634e+06	5.75029e+07	1.56739e+08	-42379.0
  SIM TSC (# Moves)	54	519	1420	1
  mean SIM TSC at ACIS-I/sdev/# obs	92903.1/ 0.353553/ 8	92903.0/ 0.109764/ 83	92959.2/ 247.231/ 237	0.125000/ 2
  mean SIM TSC at ACIS-S/sdev/# obs	75280.6/ 555.554/ 21	75435.7/ 455.092/ 179	75424.9/ 464.236/ 490	-76.1484/ 3
  mean SIM TSC at HRC-I/sdev/# obs	-50503.5/ 0.707107/ 2	-50504.3/ 0.591400/ 29	-50504.4/ 0.618080/ 89	0.500000/ -1
  mean SIM TSC at HRC-S/sdev/# obs	-99616.0/ 0.00000/ 11	-99621.5/ 46.6964/ 140	-99614.5/ 54.2637/ 383	-0.0781250/ -2
  GRATINGS
  No. HETG insertions	5.00000	40.0000	119.000	0.00000
  No. LETG insertions	2.00000	23.0000	73.0000	1.00000
  mean HETG inserted angles/sdev (A)	6.33750/ 0.00000	6.33750/ 0.00000	6.65263/ 0.378932	0.00000
  mean HETG inserted angles/sdev (B)	6.33750/ 0.00000	6.33750/ 0.00000	6.45938/ 0.123283	0.00000
  mean LETG inserted angles/sdev (A)	7.08750/ 0.00000	7.12011/ 0.0116724	8.48750/ 6.04054	0.00000
  mean LETG inserted angles/sdev (B)	4.46250/ 0.00000	4.46250/ 0.00000	4.56010/ 0.0508884	0.00000
  mean HETG retracted angles/sdev (A)	79.7625/ 0.0281250	79.8375/ 0.00000	80.4142/ 0.640654	0.00000
  mean HETG retracted angles/sdev (B)	80.5125/ 0.0281250	80.5875/ 0.00000	81.0531/ 0.536493	-0.0750046
  mean LETG retracted angles/sdev (A)	79.0875/ 0.00000	79.1364/ 0.0166749	80.2227/ 2.33192	0.00000
  mean LETG retracted angles/sdev (B)	78.3375/ 0.00000	78.3375/ 0.00000	79.0207/ 0.727900	0.00000
  Reaction Wheel Rotations		Past 12 Months	Jan00 thru current
  AORWDAY1	8.66956e+07	9.58544e+08	2.24158e+09	-1.07624e+07
  AORWDAY2	7.70957e+07	9.18320e+08	2.17499e+09	1.24639e+07
  AORWDAY3	8.76296e+07	1.01829e+09	2.37923e+09	-4.34023e+06
  AORWDAY4	7.60985e+07	9.35881e+08	2.22448e+09	3.62341e+06
  AORWDAY5	8.11610e+07	9.24962e+08	2.17840e+09	-1.95863e+06
  AORWDAY6	8.15227e+07	1.01662e+09	2.37273e+09	1.04793e+06

  
  

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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

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