- M&TA MONTHLY REPORT -

OUTLINE

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

• Configuration/Radiation Overview for May 2002
  

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• ACIS

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

      Statistics:
      # IMAGE     NPIX      MEAN          RMS              MIN    MAX
      ACIS_may02 6004901    7.944         12.458            0.0    5317.0
      
       I2 node 0  262654  6.230710        5.173980           0.0   196.0
       I2 node 1  262654  7.232363        9.227457           0.0   302.0
       I2 node 2  262654  8.426024        14.004676          0.0   439.0
       I2 node 3  262654  9.480115        18.543166          0.0   552.0
      
       I3 node 0  262654  9.798903        18.000201          0.0   514.0
       I3 node 1  262654  8.411583        13.384685          0.0   401.0
       I3 node 2  262654  7.174816        8.939552           0.0   288.0
       I3 node 3  262654  6.073519        4.785715           0.0   177.0
      
       S2 node 0  262397  10.753473       4.368623           0.0   884.0
       S2 node 1  262397  13.112959       31.873254          0.0   679.0
       S2 node 2  262397  11.387710       6.986763           0.0  2819.0
       S2 node 3  262397  10.999291       4.161335           0.0    37.0
      
       S3 node 0  262397  15.133332       5.157878           0.0   123.0
       S3 node 1  262397  17.032268       12.194197          0.0   409.0
       S3 node 2  262397  15.840840       4.774408           0.0   142.0
       S3 node 3  262397  14.871264       4.802431           0.0   374.0
      

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

      
      Statistics:
       IMAGE        NPIX      MEAN          RMS              MIN    MAX
       ACIS_total 6004901   295.96         539.66            0.0   450749.0
      
       I2 node 0  262654  183.079157      145.790919        49.0  9358.0
       I2 node 1  262654  219.220366      306.527023       122.0  9884.0
       I2 node 2  262654  250.870727      473.821162       146.0  13828.0
       I2 node 3  262654  271.406002      626.598307         0.0  16964.0
      
       I3 node 0  262654  289.564987      618.170734       149.0  16576.0
       I3 node 1  262654  264.823589      461.327220       145.0  13166.0
       I3 node 2  262654  222.938231      298.351980        59.0  9547.0
       I3 node 3  262654  178.503902      131.498802         0.0  5279.0
      
       S2 node 0  262397  352.716403      337.015758       119.0  51468.0
       S2 node 1  262397  446.001086      1138.132230      138.0  22086.0
       S2 node 2  262397  401.221527      298.015242       171.0  146479.0
       S2 node 3  262397  391.496923      84.299075          0.0   857.0
      
       S3 node 0  262397  762.922903      617.700354       200.0  4644.0
       S3 node 1  262397  938.605255      693.530119         0.0  69564.0
       S3 node 2  262397  664.711075      168.354451       213.0  3283.0
       S3 node 3  262397  563.174895      142.542445         0.0  3403.0
      

    • MAY 2002 dose GIF image
      
    • MAY I3 dose GIF image
      
    • MAY S3 dose GIF image
      
    • TOTAL JUL 1999 - MAY 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	9.514e-9        1.189e-8        1.342e-8        1.121e-8
    CCD6	1.169e-8        1.364e-8        1.372e-8        1.221e-8
    CCD8	9.509e-9        1.050e-8        9.220e-9        8.553e-9
    CCD9	1.019e-8        1.270e-8        1.222e-8        8.501e-9
    
    AVG	9.977e-9
    
    
    Front Side Illuminated I Array
    
    	Node 0		Node 1		Node 2		Node 3
    
    CCD0	9.513e-9        1.285e-8        1.239e-8        1.008e-8
    CCD1	1.004e-8        1.171e-8        1.173e-8        9.433e-9
    CCD2	1.034e-8        1.283e-8        1.261e-8        9.037e-9
    CCD3	9.764e-9        1.162e-8        1.175e-8        1.029e-8
    
    AVG	1.003e-8
    
    Back Side Illuminated S Array (not detrended)
    
    	Node 0		Node 1		Node 2		Node 3
    
    CCD5	5.285e-9      6.043e-9        5.546e-9         3.343e-9
    AVG:	4.826e-9
    
    CCD7	3.104e-9       4.255e-9        4.453e-9        3.044e-9
    AVG	3.803e-9
    
    

  • Focal Plane Temperature

      
           The Mean (max) FPT: -115.45      std dev: 1.72
                   mean width:    0.30      std dev: 0.11 
    
    

    DOY	Focal Temp	S.D.
    121.61	-114.38	0.37
    124.25	-114.22	0.54
    126.73	-118.58	0.20
    129.55	-114.22	0.38
    134.80	-114.70	0.26
    137.40	-115.51	0.24
    140.01	-116.80	0.28
    142.71	-118.28	0.11
    145.38	-115.67	0.20
    147.98	-115.02	0.31
    150.63	-112.60	0.38

    
    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
  
  

  • ACIS Rejected Events

    
    The average EVTSENT, DROP_AMP, DROP_POS, DROP_GRD, THR_PIX, and maximum BERR_SUM are plotted for each observation. CTI observations are plotted separately from regular science observations. For Clarity, only S3 is shown.
    Notes:
    1. The half-life decay of the CTI source is clearly evidenced in the steady decline of EVTSENT.
    2. The slope of the averaged dropped events and THR_PIX changes around DOM 380. This may be a seasonal effect due to solar activity and changes in background rates. A full explanation and fit method are being determined.

  • CTI Obs
    

    Sci Obs
    
    

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• HRC

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

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_05_2002.fits          16777216  0.00530   0.07370     0.0        5.0
    

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

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_08_1999_05_2002.fits  16777216  1.37074   3.37604     0.0        464.0
    

    
    
  • MAY HRC-S dose fits image
    

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    
    No observation this month
    

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

            IMAGE                NPIX      MEAN     STDDEV      MIN      MAX
    HRCS_08_1999_05_2002.fits  16777216  4.42420   10.77406     0.0      1819.0
    
    
    

  • MAY HRC-I dose PNG image
    
  • AUG 1999 - MAY 2002 HRC-I dose PNG image
    MAY HRC-S dose PNG image
    
  • AUG 1999 - MAY 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).
    
    
    May 2002 Timing Plots       Entire Mission Timing Plots
    

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  • Spacecraft Motions

    MAY02

    Motion	Monthly total	Annual Total	Mission Total	Monthly Delta
    		May01 thru May02	Jul99 thru May02	current - previous
    SIM
    SIM FA (STEPS)	4974.00	65860.0	256693.	214.000
    SIM TSC (STEPS)	5.37886e+06	5.76955e+07	1.56931e+08	150140.
    SIM TSC (# Moves)	55	520	1421	2
    mean SIM TSC at ACIS-I/sdev/# obs	92903.1/ 0.333333/ 9	92903.0/ 0.109109/ 84	92958.9/ 246.735/ 238	0.109375/ 3
    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	9.49978e+07	9.73826e+08	2.33658e+09	8.30218e+06
    AORWDAY2	7.16231e+07	9.23700e+08	2.24661e+09	-5.47259e+06
    AORWDAY3	1.01040e+08	1.03677e+09	2.48027e+09	1.34108e+07
    AORWDAY4	8.81372e+07	9.47370e+08	2.31261e+09	1.20388e+07
    AORWDAY5	7.32539e+07	9.28905e+08	2.25166e+09	-7.90712e+06
    AORWDAY6	9.58964e+07	1.03312e+09	2.46862e+09	1.43737e+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

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