- 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 - Focus
5. PCAD
   1. ACA Trending
   2. Gyro bias drift
   3. Science Instrument Positional Change Monitoring
6. Radiation Zone Timing
7. Trending
   1. Critical Trends
   2. Quarterly Trends
8. Spacecraft Motions

Configuration/Radiation Overview for February 2009

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.

  • FEB registered-photon-map in fits
    

    Statistics:
    # IMAGE     NPIX        MEAN           RMS              MIN     MAX
    ACIS_feb09 6004901      8.300          12.72            0.0     665.0 
    
     I2 node 0  262654      9.628666        3.857325        0.0      50.0
     I2 node 1  262654      10.361185       4.408091        0.0     265.0
     I2 node 2  262654      10.181511       3.962278        0.0      57.0
     I2 node 3  262654      9.975927        4.164862        0.0      94.0
    
     I3 node 0  262654      10.416062       3.966410        0.0      53.0
     I3 node 1  262654      10.940823       10.846187       0.0     270.0
     I3 node 2  262654      9.846904        3.801582        0.0      86.0
     I3 node 3  262654      9.832130        3.902414        0.0     173.0
    
     S2 node 0  262654      9.866192        3.846989        0.0     303.0
     S2 node 1  262654      10.212547       4.324828        0.0      73.0
     S2 node 2  262654      11.005396       4.038586        0.0      96.0
     S2 node 3  262654      11.191559       3.887319        0.0     586.0
    
     S3 node 0  262654      13.494167       10.506552       0.0     140.0
     S3 node 1  262654      12.550160       4.473683        0.0      71.0
     S3 node 2  262654      12.406480       3.872232        0.0      44.0
     S3 node 3  262654      10.700070       3.539288        0.0      49.0
    
    

  • Jul 1999 - Feb 2009 registered-photon-map in fits
    

    Statistics:
     IMAGE        NPIX      MEAN          RMS              MIN    MAX
    ACIS_total  6004901    1228.14          1678.06         0.0    74872.0
    
     I2 node 0  262654      10.940823       10.846187       0.0     270.0
     I2 node 1  262654      1007.576424     234.761550      0.0     16380.0
     I2 node 2  262654      1021.839294     197.450252      0.0     8410.0
     I2 node 3  262654      1022.809838     250.631606      0.0     27267.0
    
     I3 node 0  262654      1076.000663     259.579186      0.0     5634.0
     I3 node 1  262654      1117.514000     809.653702      0.0     21453.0
     I3 node 2  262654      994.123330      170.258379      0.0     4313.0
     I3 node 3  262654      982.242851      182.844031      0.0     18167.0
    
     S2 node 0  262654      1471.917777     193.495955      721.0   19811.0
     S2 node 1  262654      1560.987819     322.525054      753.0   8152.0
     S2 node 2  262654      1740.582242     329.549160      977.0   11556.0
     S2 node 3  262654      1680.377881     245.576528      964.0   22672.0
    
     S3 node 0  262654      2579.407541     1299.956287     1049.0  10994.0
     S3 node 1  262654      3788.425825     1792.127755     0.0     11888.0
     S3 node 2  262654      2789.537404     818.380245      932.0   6315.0
     S3 node 3  262654      2106.608668     347.295265      1105.0  8277.0
    
      FEB 2009 dose PNG image
    
      FEB I3 dose PNG image
    
      FEB S3 dose PNG image
    
      TOTAL JUL 1999 - FEB 2009 dose PNG image
    
      TOTAL I3 dose PNG image
    
      TOTAL S3 dose PNG image
    
    

  
  
• Integrated Exposure Maps of Last 12 Months
  

  Nov 2008	Aug 2008	May 2008	Feb 2008

  
  
  
• 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: -112.86 C    std dev: 4.89
                 mean width:    0.22 days std dev: 0.12
  

  
  
  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

  
  
  
  
  

HRC

DOSE of central 4K pore-pairs



• FEB HRC-I dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCI_02_2009.fits          16777216   0.028    0.170       0.0       4.0  
  

  
  
• SEP 1999 - FEB 2009 HRC-I dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCI_09_1999_02_2009.fits  16777216   2.753    3.631       0.0       290.0
  

  
  
• FEB HRC-S dose fits image

          IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
  HRCS_02_2009.fits          16777216   0.012    0.110       0.0       4.0
  

  
  
• SEP 1999 - FEB 2009 HRC-S dose fits image

          IMAGE                NPIX     MEAN      STDDEV      MIN      MAX
  HRCS_09_1999_02_2009.fits  16777216  9.534      17.758      0.0      1553.0
  

  
  
• FEB HRC-I dose PNG image
  
• AUG 1999 - FEB 2009 HRC-I dose PNG image
  
• FEB HRC-S dose PNG image
  
• AUG 1999 - FEB 2009 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
  

  Nov 2008	Aug 2008	May 2008	Feb 2008

  
  
• Integrated Exposure Maps of Last 12 Months: HRCS
  

  Nov 2008	Aug 2008	May 2008	Feb 2008

  
  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.
  
  
  

TOP

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PCAD

ACA Trending - Entire Period
ACA Trending - February 2009




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





The large dispersion around DOM ~ 2400 (Jan 2005) are all due to none grating Capella observations. Many observations are off-axis observations (e.g., obsid 6558).

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).



Feb 2009 Timing Plots       Entire Mission Timing Plots

Critical Trends

ACIS Temperatures - Daily Maximums
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
1PDEAAT	307.69	7.68	-9.327e-01	6.284e-02	K	PSMC DEA PS A TEMP
1PIN1AT	293.59	6.79	-6.827e-01	4.078e-02	K	PSMC TEMP 1A
HRMA Computed Averages - Daily Maximums
OBAAVG	284.45	0.71	2.561e-01	7.503e-03	K	OBA/TFTE TEMP
EPHIN Temperatures - Daily Maximums
TEIO	311.44	16.70	1.910e+00	1.374e+00	K	EPHIN ELECTRONICS HOUSING TEMP
TEPHIN	308.07	7.38	3.011e+00	-1.760e-01	K	EPHIN SENSOR HOUSING TEMP
SIM Temperatures - Daily Maximums
3TRMTRAT	8.53	17.60	1.249e+00	3.915e-02	TEMP	SEA A TRANSLATION DRIVE MOTOR
S/C Main Temperatures - Daily Maximums
TCYLFMZM	296.09	22.59	5.151e-01	-2.800e+00	K	CNT CYL TEMP:-Z SIDE UNDER LAE-1
TCYLFMZP	298.82	21.55	4.699e-01	-2.601e+00	K	CNT CYL TEMP:-Z SIDE UNDER LAE-2
S/C Ancillary Temperatures - Daily Maximums
TFSSBKT1	325.86	19.19	1.465e+00	-2.490e+00	K	FSS BRACKET-1 TEMP (+Y)
TFSSBKT2	322.05	23.11	8.127e-01	-2.828e+00	K	FSS BRACKET-2 TEMP (+Y)
TSCTSF1	288.92	3.53	9.108e-01	-1.264e-01	K	SC-TS FITTING -1 TEMP
TSCTSF6	288.47	3.90	1.011e+00	-1.524e-01	K	SC-TS FITTING -6 TEMP
MUPS - Daily Maximums
PM1THV1T	329.28	10.19	2.379e+00	-2.937e+00	K	MUPS 1 THRUSTER VALVE 01 TEMP
PLINE02T	307.53	10.03	1.713e+00	2.434e-01	K	PROP LINE TEMP 02
PLINE03T	309.26	10.25	1.125e+00	7.051e-01	K	PROP LINE TEMP 03
PLINE04T	297.51	9.44	-1.419e-01	5.304e-01	K	PROP LINE TEMP 04

Quarterly Trends

MUPS

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
PM1THV1T	329.54	6.95	7.864e+00	-2.183e+02	K	MUPS 1 THRUSTER VALVE 01 TEMP
PM1THV2T	331.29	5.65	6.489e+00	-2.232e+02	K	MUPS 1 THRUSTER VALVE 02 TEMP
PM2THV1T	327.30	9.63	5.454e+00	-3.054e+02	K	MUPS 2 THRUSTER VALVE 01 TEMP
PM2THV2T	328.28	8.38	5.232e+00	-2.372e+02	K	MUPS 2 THRUSTER VALVE 02 TEMP


SC Main Temperatures

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
TCYLAFT1	295.03	3.55	-1.440e+01	4.383e+02	K	CNT CYL TEMP:16-IN FWD OF SC-TS FIT-1
TCYLAFT2	276.63	1.96	-7.228e+00	1.773e+02	K	CNT CYL TEMP:16-IN FWD OF SC-TS FIT-2
TCYLAFT3	264.01	1.61	-3.785e+00	7.313e+01	K	CNT CYL TEMP:16-IN FWD OF SC-TS FIT-3
TCYLAFT4	267.52	2.04	-6.176e+00	1.324e+02	K	CNT CYL TEMP:16-IN FWD OF SC-TS FIT-4
TCYLAFT5	280.16	3.23	-1.369e+01	3.221e+02	K	CNT CYL TEMP:16-IN FWD OF SC-TS FIT-5
TCYLAFT6	294.75	3.90	-1.615e+01	4.562e+02	K	CNT CYL TEMP:16-IN FWD OF SC-TS FIT-6


SC Ancillary Temperatures

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
TFSSBKT1	325.92	19.20	-2.488e+01	1.179e+03	K	FSS BRACKET-1 TEMP (+Y)
TFSSBKT2	319.55	25.68	-3.159e+01	1.576e+03	K	FSS BRACKET-2 TEMP (+Y)
TRSPMTPC	289.29	5.02	-1.997e+01	5.385e+02	K	RAD SHR PNL TEMP:TTWN MUPS AND PCAD
TSCTSF1	292.59	2.40	-8.601e+00	2.424e+02	K	SC-TS FITTING -1 TEMP


HRMA Struts

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4RT585T	289.86	0.22	-7.127e-01	2.287e+01	K	RT 585 - STRUT TEMP
4RT590T	289.43	0.96	-2.897e+00	9.426e+01	K	RT 590 - STRUT TEMP

Reaction Wheel Rotations

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	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2008	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	Jan

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