- M&TA MONTHLY REPORT -

1. Configuration
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, E/dE
5. PCAD
   1. ACA Trending
   2. Fid light drift
   3. Gyro bias drift
   4. Science Instrument Positional Change Monitoring
6. Radiation Zone Timing
7. Quarterly Trends
8. Spacecraft Motions

Configuration/Radiation Overview for April 2007

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 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.

  • APR registered-photon-map in fits
    

    Statistics:
    # IMAGE     NPIX        MEAN           RMS              MIN     MAX
    ACIS_apr07 6004901      12.382         18.681           0.0     999.0
    
     I2 node 0  262654      13.205479       4.610459        0.0      66.0
     I2 node 1  262654      14.357356       5.613612        0.0     457.0
     I2 node 2  262654      19.015152       11.050382       0.0     195.0
     I2 node 3  262654      18.586643       9.402244        0.0      89.0
    
     I3 node 0  262654      19.215417       9.337521        0.0      73.0
     I3 node 1  262654      22.366570       18.599517       0.0     367.0
     I3 node 2  262654      12.976400       4.730715        0.0      68.0
     I3 node 3  262654      12.613407       4.496186        0.0     264.0
    
     S2 node 0  262654      14.816157       4.761012        0.0     170.0
     S2 node 1  262654      15.196343       5.621156        0.0     105.0
     S2 node 2  262654      15.780538       5.230348        1.0     167.0
     S2 node 3  262654      14.971920       4.684192        1.0     679.0
    
     S3 node 0  262654      17.032874       5.984973        1.0     128.0
     S3 node 1  262654      17.949868       5.381293        0.0      99.0
     S3 node 2  262654      17.663591       4.740710        2.0     181.0
     S3 node 3  262654      16.123323       4.268825        1.0      80.0
    
    

  • Jul 1999 - Apr 2007 registered-photon-map in fits
    

    
    Statistics:
     IMAGE        NPIX      MEAN          RMS              MIN    MAX
    ACIS_total  6004901   1008.28       1394.54            0.0   59710.0
    
     I2 node 0  262654      729.791080      128.607788      0.0     3026.0
     I2 node 1  262654      771.127492      176.331771      0.0     9163.0
     I2 node 2  262654      788.478283      153.238664      0.0     2912.0
     I2 node 3  262654      792.372814      191.001555      0.0     3693.0
    
     I3 node 0  262654      841.119462      213.198206      0.0     5021.0
     I3 node 1  262654      867.805733      589.193581      0.0     15798.0
     I3 node 2  262654      766.952799      128.314614      0.0     3126.0
     I3 node 3  262654      757.068836      138.253362      0.0     14044.0
    
     S2 node 0  262654      1169.181690     145.670113      550.0   12575.0
     S2 node 1  262654      1242.039395     251.403643      585.0   6133.0
     S2 node 2  262654      1405.802799     280.176163      776.0   9449.0
     S2 node 3  262654      1362.879209     219.921189      778.0   13067.0
    
     S3 node 0  262654      2234.983827     1222.506432     855.0   10526.0
     S3 node 1  262654      3401.217740     1746.309559     0.0     11517.0
     S3 node 2  262654      2405.027539     765.926965      722.0   4968.0
     S3 node 3  262654      1775.171460     299.557786      899.0   7403.0
    
    

  • APR 2007 dose PNG image
    
  • APR I3 dose PNG image
    
  • APR S3 dose PNG image
    
  • TOTAL JUL 1999 - APR 2007 dose PNG image
    
  • TOTAL I3 dose PNG image
    
  • TOTAL S3 dose PNG image
    
  
  
• Integrated Exposure Maps of Last 12 Months
  

  Jan 2007	Oct 2006	Jul 2006	Apr 2006

  
  
  
• 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: -117.44 C    std dev: 1.80
                 mean width:    0.99 days std dev: 0.61
  

  
  
  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

  
  
  
  
  
  
  
  

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  HRC

  DOSE of central 4K pore-pairs
  
  
  
  • APR HRC-I dose fits image

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_04_2007.fits          16777216   0.018    0.136       0.0       5.0 
    

    
    
  • SEP 1999 - APR 2007 HRC-I dose fits image

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_08_1999_04_2007.fits  16777216   2.337    3.411       0.0       289.0
    

    
    
  • APR HRC-S dose fits image

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCS_04_2007.fits          16777216   0.022    0.175       0.0       19.0 
    

    
    
  • SEP 1999 - APR 2007 HRC-S dose fits image

            IMAGE                NPIX     MEAN      STDDEV      MIN      MAX
    HRCS_08_1999_04_2007.fits  16777216  7.787     15.580       0.0      1533.0
    

    
    
  • APR HRC-I dose PNG image
    
  • SEP 1999 - APR 2007 HRC-I dose PNG image
    
  • APR HRC-S dose PNG image
    
  • SEP 1999 - APR 2007 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
    

    Jan 2007	Oct 2006	Jul 2006	Apr 2006

    
    
  • Integrated Exposure Maps of Last 12 Months: HRCS
    

    Jan 2007	Oct 2006	Jul 2006	Apr 2006

    
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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 0.15 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.
  We have selected only calibration observations of Capella, HR1099, and Sigma Gem.
  See MIT technotes for a parallel analysis.
  

  Plot symbol indicates dispersion arm:	Color indicates observation date:
  Plus side = plus (+) Minus side = cross (x)	1999-2000   green 2001-2002   blue 2003-2004   yellow 2005-2007   orange

  

ACA Trending - Entire Period
ACA Trending - Apr 2007


Gyro Bias Drift



Science Instrument Positional Change Monitoring

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
* even if the observation is not grating one, if it is a known point source, it is added to the list.
* observed ra, jan, target ra, jan, nominal ra, jan 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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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 2007 Timing Plots       Entire Mission Timing Plots


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Quarterly Trends

• EPHIN Temperatures and Electronics

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  HKABIASLEAKI	1.00	0.000e+00	0.000e+00	0.000e+00	uA	EPHIN HOUSEKEEPING A-BIAS: LEAKAGE CURRENT (5EHSE400)
  HKBBIASLEAKI	0.40	0.48	-4.198e-01	1.650e+01	uA	EPHIN HOUSEKEEPING B-BIAS: LEAKAGE CURRENT (5EHSE500)
  HKCBIASLEAKI	45.15	0.29	-2.606e-01	-5.686e-01	uA	EPHIN HOUSEKEEPING C-BIAS: LEAKAGE CURRENT (5EHSE600)
  HKDBIASLEAKI	41.12	3.42	2.756e+00	-2.401e+02	uA	EPHIN HOUSEKEEPING D-BIAS: LEAKAGE CURRENT (5EHSE700)
  HKEBIASLEAKI	42.55	3.31	3.263e-01	-2.290e+02	uA	EPHIN HOUSEKEEPING E-BIAS: LEAKAGE CURRENT (5EHSE800)
  HKFBIASLEAKI	0.10	0.30	-2.699e-02	7.310e+00	uA	HK -6 Volts Rail - Voltage
  HKP27I	7.52	0.38	2.270e-01	-2.344e+01	AMP	HK 27 Volts Rail - Current
  HKP27V	14.15	3.90	-2.244e+00	1.497e+02	V	HK 27 Volts Rail - Voltage
  HKP5I	45.01	1.70	1.116e+00	-7.770e+01	AMP	HK 5 Volts Rail - Current
  HKP5V	5.10	1.289e-04	-3.770e-05	0.000e+00	V	HK 5 Volts Rail - Voltage
  HKP6I	139.21	2.92	-4.534e-01	-7.781e+00	AMP	HK 6 Volts Rail - Current
  HKP6V	5.80	1.427e-02	1.160e-02	-5.293e-01	V	HK 6 Volts Rail - Voltage
  TEIO	311.31	14.62	2.365e+00	2.235e+02	K	EPHIN ELECTRONICS HOUSING TEMP
  TEPHIN	311.64	3.76	6.066e-01	-8.247e+01	K	EPHIN SENSOR HOUSING TEMP

  
  
• OBA Heaters

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  OOBTHR04	289.00	0.18	-1.647e-01	-6.110e+00	K	RT 27: HRMA STRUT
  OOBTHR45	289.60	0.56	6.363e-01	-3.611e+01	K	RT 67: TFTE COVER
  OOBTHR50	283.21	6.925e-02	-2.858e-02	-4.846e-01	K	RT 76: S/C STRUT
  OOBTHR51	287.89	0.67	-1.147e+00	2.367e+01	K	RT 77: S/C STRUT
  OOBTHR52	288.27	0.70	-5.179e-01	5.843e+00	K	RT 78: S/C STRUT

  
  
• HRMA Struts

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  4RT584T	289.21	0.18	-3.091e-01	-6.018e+00	K	RT 584 - STRUT TEMP
  4RT590T	288.07	0.76	-1.353e+00	2.927e+01	K	RT 590 - STRUT TEMP
  4RT591T	288.59	0.77	-6.289e-01	8.845e+00	K	RT 591 - STRUT TEMP

  
  
• OBA FWD Bulkhead

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  4RT709T	285.74	0.22	2.142e-01	-1.476e+01	K	RT 709 - OB BULKHEAD TEMP
  4RT710T	286.38	0.26	3.473e-01	-1.956e+01	K	RT 710 - OB BULKHEAD TEMP
  4RT711T	286.44	0.26	1.611e-01	-1.418e+01	K	RT 711 - OB BULKHEAD TEMP




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Spacecraft Motions



Reaction Wheel Rotations



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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	Jul	Aug	Sep	Oct	Nov	Dec
2003	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2004	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2005	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2006	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2007	Jan	Feb	Mar

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