- M&TA MONTHLY REPORT -

1. Configuration
2. ACIS
   1. Dose
   2. CTI
   3. Focal Plane Temperature
   4. Bad Pixels
   5. Background
   6. Corner Pixels
   7. Bias Plots
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 Jan 2008

ACIS

• ACIS DOSE registered-photon-map

  The steps we took to compute the 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 Sep 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.

  • JAN registered-photon-map in fits
    

    Statistics:
    # IMAGE     NPIX        MEAN           RMS              MIN     MAX
    ACIS_jan08 6004901      10.8470        17.2737          0.0     915.0
    
     I2 node 0  262654      11.945496       4.302262        0.0      76.0
     I2 node 1  262654      12.831636       4.941255        0.0     468.0
     I2 node 2  262654      12.624168       4.426894        0.0     167.0
     I2 node 3  262654      12.337863       4.712571        0.0     148.0
    
     I3 node 0  262654      13.751457       4.843470        0.0      68.0
     I3 node 1  262654      14.804119       13.893374       0.0     331.0
     I3 node 2  262654      14.154576       6.954567        0.0     114.0
     I3 node 3  262654      13.085785       4.626928        0.0     334.0
    
     I2 node 0  262654      15.136075       5.000013        0.0      85.0
     I2 node 1  262654      15.496654       5.949277        0.0     115.0
     I2 node 2  262654      15.972461       5.437728        1.0     140.0
     I2 node 3  262654      15.267542       4.807535        0.0     479.0
    
     I3 node 0  262654      13.301440       4.618366        0.0      86.0
     I3 node 1  262654      16.015161       7.004055        0.0     150.0
     I3 node 2  262654      15.216341       5.853755        1.0      88.0
     I3 node 3  262654      13.209539       3.934589        0.0      94.0
    
    

  • Jul 1999 - Jan 2008 registered-photon-map in fits
    

    
    Statistics:
     IMAGE        NPIX      MEAN          RMS              MIN    MAX
    ACIS_total  6004901    1104.929         1519.313        0.0    66296.0
    
     I2 node 0  262654      824.750397      146.628406      0.0     3599.0
     I2 node 1  262654      871.828137      200.719126      0.0     12856.0
     I2 node 2  262654      887.932865      171.462636      0.0     3515.0
     I2 node 3  262654      890.820998      213.896045      0.0     4170.0
    
     I3 node 0  262654      941.290919      232.866411      0.0     5307.0
     I3 node 1  262654      974.513107      682.768685      0.0     18222.0
     I3 node 2  262654      863.842150      146.346728      0.0     3618.0
     I3 node 3  262654      852.853424      156.997855      0.0     15829.0
    
     I2 node 0  262654      1299.684509     163.101481      627.0   12781.0
     I2 node 1  262654      1382.062453     281.446019      663.0   7027.0
     I2 node 2  262654      1550.962990     298.976968      867.0   10028.0
     I2 node 3  262654      1501.439048     232.181518      856.0   17279.0
    
     I3 node 0  262654      2384.775107     1259.094877     943.0   10751.0
     I3 node 1  262654      3589.440714     1772.532823     0.0     11689.0
     I3 node 2  262654      2592.650682     799.331236      823.0   5676.0
     I3 node 3  262654      1920.784325     318.321236      998.0   7831.0
    
    

  • JAN 2008 dose PNG image
    
  • JAN I3 dose PNG image
    
  • JAN S3 dose PNG image
    
  • TOTAL JUL 1999 - JAN 2008 dose PNG image
    
  • TOTAL I3 dose PNG image
    
  • TOTAL S3 dose PNG image
    
  
  
• Integrated Exposure Maps of Last 12 Months
  

  Oct 2007	Jul 2007	Apr 2007	Jan 2007

  
  
  
• 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

    
         The Mean (max) FPT: -115.53 C    std dev: 3.12
                 mean width:    0.71 days std dev: 0.56
  

  
  
  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.

  

• 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 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 Corner Pixels
  We plot the average corner pixel centroid slope and mean for ACIS observations. Separate plots are shown for FAINT MODE (3X3) and VFAINT MODE (5X5) observations. Metric is the centroid of a Gaussian fit to the histogram of corner pixel PHA values of detected events. Plus signs are FAINT observations, diamonds are VFAINT observations, and boxes are VFAINT observations with centroids computed using only the corner pixels of a 3X3 event island (referred to as AFAINT). We see a very small upward trend.

  I3
  

  S3
  
  
  TOP
  
• 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



• JAN HRC-I dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCI_01_2008.fits          16777216   0.047    0.069       0.0       4.0 
  

  
  
• AUG 1999 - JAN 2008 HRC-I dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCI_08_1999_01_2008.fits  16777216   2.465    3.479       0.0       289.0
  

  
  
• JAN HRC-S dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCS_01_2008.fits          16777216   0.039    1.198       0.0       38.0
  

  
  
• AUG 1999 - JAN 2008 HRC-S dose fits image

          IMAGE                NPIX     MEAN      STDDEV      MIN      MAX
  HRCS_08_1999_01_2008.fits  16777216  8.767     16.892       0.0      1545.0
  

  
  
• JAN HRC-I dose PNG image
  
• AUG 1999 - JAN 2008 HRC-I dose PNG image
  
• JAN HRC-S dose PNG image
  
• AUG 1999 - JAN 2008 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
  

  Oct 2007	Jul 2007	Apr 2007	Jan 2007

  
  
• Integrated Exposure Maps of Last 12 Months: HRCS
  

  Oct 2007	Jul 2007	Apr 2007	Jan 2007

  
  TOP

• 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 - Jan 2008


ACA Trending




ACIS-1




ACIS-6




HRC-I-1

No valid fit data points found during the period

HRC-S-1

No valid fit data points found during the period





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).



January 2008 Timing Plots       Entire Mission Timing Plots

Quarterly Trends

• EPHIN Temperatures and Voltages

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  5EPHINT	313.52	3.27	1.702e+00	-3.874e+01	K	EPHIN TEMP
  HKEBOXTEMP	318.01	3.30	2.450e+00	-1.420e+01	K	EPHIN HOUSEKEEPING EBOX: TEMPERATURE (5EHSE300)
  HKP27I	7.38	0.37	-3.175e+00	6.442e-01	AMP	HK 27 Volts Rail - Current
  HKP27V	19.76	6.98	8.387e+01	2.095e+01	V	HK 27 Volts Rail - Voltage
  TEPHIN	313.31	3.49	1.117e+00	4.113e+00	K	EPHIN SENSOR HOUSING TEMP