- M&TA MONTHLY REPORT -

1. Configuration
2. ACIS
   1. Dose
   2. CTI
   3. Focal Plane Temperature
   4. Background
   5. Rejected Events
3. HRC - Dose
4. Gratings - Focus
5. PCAD
   1. ACA Trending
   2. Gyro bias drift
6. Radiation Zone Timing
7. Quarterly Trends
8. Spacecraft Motions

Configuration/Radiation Overview for March 2006

ACIS

• ACIS DOSE registered-photon-map

  We updated ACIS cumulative dose map from this month. The steps we took to compute a new dose map are;

  • Level 1 Event files for a specified month are obtained from archive.
  • Image data including I2, I3, S2, S3 CCDs are extracted from all event files.
  • All the extracted image data were merged to create a month long exposure map for the month.
  • The exposure map is opened with ds9, and check a distribution of count rates against energy. From this, estimate the upper threshold value. Any events beyond this upper threshold are assumed erroneous events such as bad pixels.
  • Using this upper threshold, the data is filtered, and create a cleaned exposure map for the month.
  • The exposure map from each month from the Aug 1999 is added up to create a cumulative exposure map for each month.
  • Using fimgstatistic, we compute count rate statistics for each CCDs.
  • For observations with high data drop rates (e.g., Crab nebula, Cas A), we corrected the observations by adding events.
  Note: Counts and RMS's of Cumulative maps are lower than the previous months. This is because we excluded extreme outliers.

  Please check more detail plots at Telemetered Photon Dose Trend page.

  • MARRUARY registered-photon-map in fits
    

    Statistics:
    # IMAGE     NPIX        MEAN           RMS               MIN   MAX
    ACIS_mar06 6004901      10.464         14.318            0.0   777.0
    
     I2 node 0  262654      8.309566        3.404941        0.0      40.0
     I2 node 1  262654      8.790035        3.736332        0.0     282.0
     I2 node 2  262654      8.772263        3.547854        0.0      60.0
     I2 node 3  262654      8.606453        3.680912        0.0      51.0
    
     I3 node 0  262654      9.870183        5.050647        0.0     130.0
     I3 node 1  262654      11.580257       9.433736        0.0     209.0
     I3 node 2  262654      9.971819        3.997668        0.0      61.0
     I3 node 3  262654      8.981659        3.642638        0.0     177.0
    
     I2 node 0  262654      17.185367       5.540697        1.0     139.0
     I2 node 1  262654      21.628264       9.834290        0.0     109.0
     I2 node 2  262654      22.703240       10.855095       2.0     116.0
     I2 node 3  262654      15.473240       4.529087        0.0     303.0
    
     I3 node 0  262654      15.982280       9.095335        0.0     220.0
     I3 node 1  262654      17.645082       7.355553        0.0     113.0
     I3 node 2  262654      15.423943       4.472154        1.0      45.0
     I3 node 3  262654      13.863527       4.052348        0.0      60.0
    
    

  • Aug 1999 - Mar 2006 registered-photon-map in fits
    

    
    Statistics:
     IMAGE        NPIX      MEAN          RMS              MIN    MAX
    ACIS_total  6004901   861.911       1217.650           0.0   50800.0
    
     I2 node 0  262654      601.764622      104.278557      0.0     2305.0
     I2 node 1  262654      633.734398      143.242816      0.0     3925.0
     I2 node 2  262654      638.148857      113.448583      0.0     2057.0
     I2 node 3  262654      638.431249      144.375260      0.0     2967.0
    
     I3 node 0  262654      690.569723      170.081834      0.0     3335.0
     I3 node 1  262654      712.652981      468.617849      0.0     12749.0
     I3 node 2  262654      636.799402      104.183889      0.0     2432.0
     I3 node 3  262654      629.361332      113.184190      0.0     11602.0
    
     I2 node 0  262654      983.355499      120.762661      454.0   3320.0
     I2 node 1  262654      1041.732695     209.603159      478.0   5015.0
     I2 node 2  262654      1186.455342     244.240785      642.0   8411.0
     I2 node 3  262654      1156.112796     198.108874      636.0   7211.0
    
     I3 node 0  262654      1948.446523     1152.501277     690.0   10277.0
     I3 node 1  262654      3069.624043     1688.773794     0.0     11266.0
     I3 node 2  262654      2121.470213     710.876275      586.0   4723.0
     I3 node 3  262654      1542.502132     271.436134      724.0   3696.0
    
    

  • MAR 2006 dose PNG image
    
  • MAR I3 dose PNG image
    
  • MAR S3 dose PNG image
    
  • TOTAL AUG 1999 - MAR 2006 dose PNG image
    
  • TOTAL I3 dose PNG image
    
  • TOTAL S3 dose PNG image
    
  
  
• Integrated Exposure Maps of Last 12 Months
  

  Dec 2005	Sep 2005	Jun 2005	Mar 2005

  
  
  
• The Mean Detrended CTI

  We report CTIs with a refined data definition. CTIs were computed for the temperature dependency corrected data. Please see 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
  
  

  Focal plane temperature between Sept and Oct was re-calibrated, and the data points are corrected accordingly.

  
  
  
• Focal Plane Temperature

    
         The Mean (max) FPT: -116.08      std dev: 2.49
                 mean width:    0.55 days std dev: 0.33 
  

  
  
  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.
  
  
  

  The following is a plot of focal plane temperature and sun angle, earth angle, and altitude.

  

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




• Science instrument background rates
  This page shows scientific instrument background data based on Acis observations. A source region file is generated using get_srcregions and then the input event file is filtered using the regions in that file to remove the sources.
  
  

  Name	Low (keV)	High(KeV)	Description
  SSoft	0.00	0.50	Super soft photons
  Soft	0.50	1.00	Soft photons
  Med	1.00	3.00	Moderate energy photons
  Hard	3.00	5.00	Hard Photons
  Harder	5.00	10.00	Very Hard photons
  Hardest	10.00		Beyond 10 keV

  
  
  
  
  
• ACIS Rejected Events
  The links below are plots of stat1 quantities, showing on-board rejected events. The average EVTSENT, DROP_AMP, DROP_POS, DROP_GRD, THR_PIX, and maximum BERR_SUM obtained from L1 acis*stat1.fits files are plotted for each observation. CTI observations are plotted separately from regular science observations.
  
  Column definitions:
  • EVTSENT - number of events sent in data record
  • DROP_AMP - number of discarded events due to corrected amplitude
  • DROP_POS - number of discarded events due to CCD position
  • DROP_GRD - number of discarded events due to grade code
  • THR_PIX - number of pixels above respective threshold level
  • BERR_SUM - number of pixel bias errors so far in science run
  
  Note the half-life decline of the CTI source is clearly evidenced in the steady decline of EVTSENT.
  CCD3 CTI Observations
  
  
  CCD7 Science Observations
  
  
  CCD7 CTI Observations
  
  
  CCD7 Science Observations
  
  TOP

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  HRC

  DOSE of central 4K pore-pairs
  

  From this month, we trend 10th brightest data points instead of the maximum. This makes the maximum trend values to be about 20% lower than the previous months.

  
  
  
  • MAR HRC-I dose fits image

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_03_2006.fits          16777216  0.0391    0.2061      0.0        6.0
    

    
    
  • SEP 1999 - MAR 2006 HRC-I dose fits image

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_08_1999_03_2006.fits  16777216  2.1015    3.2454      0.0       286.0
    

    
    
  • MAR HRC-S dose fits image

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCS_03_2006.fits          16777216  0.1715    0.7349      0.0       68.0
    

    
    
  • SEP 1999 - MAR 2006 HRC-S dose fits image

            IMAGE                NPIX     MEAN      STDDEV      MIN      MAX
    HRCS_08_1999_03_2006.fits  16777216  7.2235    14.8455      0.0      1519.0
    

    
    
  • MAR HRC-I dose PNG image
    
  • SEP 1999 - MAR 2006 HRC-I dose PNG image
    
  • MAR HRC-S dose PNG image
    
  • SEP 1999 - MAR 2006 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.

    
  
  
• Integrated Exposure Maps of Last 12 Months: HRCI
  

  Dec 2005	Sep 2005	Jun 2005	Mar 2005

  
  
• Integrated Exposure Maps of Last 12 Months: HRCS
  

  Dec 2005	Sep 2005	Jun 2005	Mar 2005

  
  TOP

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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.
    
    
    

ACA Trending - Entire Period
ACA Trending - Mar 2006





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).



Mar 2006 Timing Plots       Entire Mission Timing Plots

Quarterly Trends

• ACIS Electronics Side A

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  1DE28AVO	2.844e+01	1.733e-01	1.714e+00	1.008e+01	V	DEA +28V INPUT A
  1DP28AVO	2.847e+01	1.726e-01	1.698e+00	1.009e+01	V	DPA +28V INPUT A