- 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. 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 February 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.

  • FEB registered-photon-map in fits
    

    Statistics:
    # IMAGE     NPIX        MEAN           RMS              MIN     MAX
    ACIS_feb07 6004901      10.66          14.86            0.0     800.0
    
     I2 node 0  262654      7.403034        3.082960        0.0      41.0
     I2 node 1  262654      7.876705        3.411938        0.0     296.0
     I2 node 2  262654      7.822105        3.222206        0.0      60.0
     I2 node 3  262654      7.642132        3.308402        0.0      42.0
    
     I3 node 0  262654      7.765168        3.573891        0.0      44.0
     I3 node 1  262654      7.899277        7.238265        0.0     171.0
     I3 node 2  262654      7.313880        3.024553        0.0      55.0
     I3 node 3  262654      7.324627        3.087759        0.0     124.0
    
     S2 node 0  262654      17.004381       6.340769        0.0     656.0
     S2 node 1  262654      19.864663       11.528516       0.0     117.0
     S2 node 2  262654      23.585857       16.583099       1.0     135.0
     S2 node 3  262654      18.580752       9.859486        1.0     501.0
    
     S3 node 0  262654      21.053983       12.477785       0.0     173.0
     S3 node 1  262654      18.842277       5.869108        0.0     100.0
     S3 node 2  262654      17.739874       4.641100        0.0     157.0
     S3 node 3  262654      16.615087       4.440544        1.0     128.0
    
    
    

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

    
    Statistics:
     IMAGE        NPIX      MEAN          RMS              MIN    MAX
    ACIS_total  6004901   985.97        1368.08            0.0   58342.0
    
     I2 node 0  262654      707.948986      124.276370      0.0     2912.0
     I2 node 1  262654      747.488049      170.349917      0.0     8407.0
     I2 node 2  262654      759.984852      143.035158      0.0     2706.0
     I2 node 3  262654      764.892489      182.146624      0.0     3565.0
    
     I3 node 0  262654      812.681536      206.307660      0.0     4937.0
     I3 node 1  262654      833.585255      566.672173      0.0     15239.0
     I3 node 2  262654      744.296150      123.676225      0.0     3017.0
     I3 node 3  262654      735.625046      133.898696      0.0     13643.0
    
     S2 node 0  262654      1139.596067     141.896544      536.0   12525.0
     S2 node 1  262654      1211.594293     245.437557      571.0   5945.0
     S2 node 2  262654      1373.655928     277.411689      756.0   9294.0
     S2 node 3  262654      1332.506941     219.587870      762.0   11912.0
    
     S3 node 0  262654      2202.201279     1218.969895     833.0   10468.0
     S3 node 1  262654      3365.382042     1743.450394     0.0     11485.0
     S3 node 2  262654      2369.933031     763.180802      698.0   4923.0
     S3 node 3  262654      1743.110111     297.621322      871.0   7323.0
    
    

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

  Nov 2006	Aug 2006	May 2006	Feb 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: -116.29 C    std dev: 3.04
                 mean width:    0.74 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

  
  
  
  
  
  
  
  

  ---

  HRC

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

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_02_2007.fits          16777216   0.003    0.058       0.0       3.0 
    

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

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCI_08_1999_02_2007.fits  16777216   2.279    3.368       0.0       288.0
    

    
    
  • FEB HRC-S dose fits image

            IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
    HRCS_02_2007.fits          16777216   0.040    0.208       0.0       5.0 
    

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

            IMAGE                NPIX     MEAN      STDDEV      MIN      MAX
    HRCS_08_1999_02_2007.fits  16777216  7.745     15.464       0.0      1528.0
    

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

    Nov 2006	Aug 2006	May 2006	Feb 2006

    
    
  • Integrated Exposure Maps of Last 12 Months: HRCS
    

    Nov 2006	Aug 2006	May 2006	Feb 2006

    
    TOP

  ---

  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 - Feb 2007


ACA Trending




ACIS-1




ACIS-6




HRC-I-1




HRC-S-1




Fid Light Drift

Fid light positions on ACA drift with time. The drift trends of Fid light 2 with ACIS-I and ACIS-S configurations are shown below.

The top panel shows Fid light 2 drift in ACENT I (app. along with -Y axis), and the bottom panel shows that in ACENT J (app. along with Z axis). The unit is a pixel, and one pixel is approximately 0.5 arcsec. The slope listed at the top right corner is the change in a position per year (arcsec/yr). The vertical line on DOM = 1411 (August 1, 2003) indicates a transition date of use of IRU-1 to IRU-2.
See also Tom Aldcroft's updated page: https://cxc.cfa.harvard.edu/mta/ASPECT/fid_drift


Fid 2 (ACIS-I)

Fid 2 (ACIS-S)

Fid 8 (HRC-I)

Fid 12 (HRC-S)


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 2007 Timing Plots       Entire Mission Timing Plots

Quarterly Trends

• ACIS Thermal

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  1CRAT	146.56	1.71	-5.024e-01	-2.404e+01	K	COLD RADIATOR TEMP. A
  1CRBT	147.46	1.72	-2.918e+00	-1.703e+01	K	COLD RADIATOR TEMP. B
  1DEAMZT	283.77	2.42	3.706e+00	-3.320e+01	K	DEA -Z PANEL TEMP
  1DPAMYT	285.36	3.65	8.519e+00	-1.002e+02	K	DPA -Y PANEL TEMP
  1DPAMZT	288.40	3.34	8.155e+00	-7.024e+01	K	DPA -Z PANEL TEMP
  1PDEAAT	305.09	7.85	2.652e+01	-9.272e+00	K	PSMC DEA PS A TEMP
  1PDEABT	296.18	7.56	2.573e+01	3.072e+01	K	PSMC DEA PS B TEMP
  1PIN1AT	291.50	6.72	2.218e+01	4.254e+01	K	PSMC TEMP 1A

  
  
• DEA/DPA HK Thermal

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  DEAHK3	17.93	7.16	1.603e+01	1.190e+02	C	DPA Thermistor 4 - FEP 0 PC Board
  DEAHK5	17.77	6.86	1.670e+01	6.638e+01	C	DPA Thermistor 7 - FEP 0 Frame Buf.
  DEAHK8	20.34	5.95	2.012e+01	-1.670e+02	C	DPA Thermistor 9 - FEP 1 PC Board
  DEAHK10	19.82	6.14	1.959e+01	-1.449e+02	C	DPA Thermistor 10- FEP 1 ACTEL
  DEAHK16	-119.05	0.95	-4.906e-01	2.465e+00	C	Focal Plane Temp. Board 11

  
  
• EPHIN Temperatures and Electronics

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  HKGHV	652.42	1.677e+02	-2.422e+02	-1.979e+03		HKGHV
  HKP27I	7.42	0.46	9.743e-01	-3.479e+00	AMP	HK 27 Volts Rail - Current
  HKP27V	15.18	4.64	-1.135e+01	4.088e+01	V	HK 27 Volts Rail - Voltage
  HKP5I	44.71	1.93	2.540e+00	5.100e+01	AMP	HK 5 Volts Rail - Current
  HKP5V	5.10	0.000e+00	0.000e+00	0.000e+00	V	HK 5 Volts Rail - Voltage
  HKP6I	139.18	3.02	-1.830e+00	9.813e+00	AMP	HK 6 Volts Rail - Current
  HKP6V	5.80	1.470e-02	2.159e-03	1.364e-01	V	HK 6 Volts Rail - Voltage
  TEPHIN	311.07	4.44	8.751e+00	-2.065e+01	K	EPHIN SENSOR HOUSING TEMP

  
  
• ACA Thermal

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  AACBPPT	299.79	0.83	2.011e+00	-2.029e+02	K	AC BASEPLATE TEMP (PRIME)
  AACBPRT	294.94	0.66	1.676e+00	-1.558e+02	K	AC BASEPLATE TEMP (RDNT)
  AACCCDPT	253.46	0.77	-1.813e+00	2.059e+02	K	AC CCD TEMP (PRI)
  AACCCDRT	294.60	0.70	1.823e+00	-1.664e+02	K	AC CCD TEMP (RDNT)
  AACH1T	291.81	0.52	1.251e+00	-1.158e+02	K	AC HOUSING TEMP (ACH1)
  AACH2T	291.85	0.53	1.304e+00	-1.178e+02	K	AC HOUSING TEMP (ACH2)
  AAOTALT	291.50	0.51	1.335e+00	-1.133e+02	K	AC OPT TEL ASSY LENS TEMP
  AAOTAPMT	290.91	0.48	1.374e+00	-1.039e+02	K	AC OPT TEL ASSY PRIMARY MIRROR TEMP
  AAOTASMT	291.03	0.46	1.196e+00	-9.929e+01	K	AC OPT TEL ASSY SECONDARY MIRROR TEMP
  AAOTH2MT	291.42	0.48	1.224e+00	-1.053e+02	K	AC OPT TEL ASSY SECONDARY MIRROR TEMP (HRMA)

  
  
• OBA Heaters

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  OOBTHR04	288.94	0.26	8.278e-01	-1.699e-01	K	RT 27: HRMA STRUT
  OOBTHR45	289.46	0.60	6.692e-01	1.812e+00	K	RT 67: TFTE COVER
  OOBTHR51	287.75	0.91	2.739e+00	1.431e+01	K	RT 77: S/C STRUT
  OOBTHR52	288.13	0.94	1.928e+00	1.950e+01	K	RT 78: S/C STRUT

  
  
• HRMA Struts

  Previous Quarter
  MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
  4RT584T	289.16	0.25	8.386e-01	1.325e+00	K	RT 584 - STRUT TEMP
  4RT590T	287.92	1.02	3.023e+00	1.756e+01	K	RT 590 - STRUT TEMP
  4RT591T	288.45	1.03	2.127e+00	2.045e+01	K	RT 591 - STRUT TEMP