M&TA February 2013 Monthly Report

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

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

Feb Dose Map

TOTAL

CCD I3

CCD S3

Statistics:
# IMAGE     NPIX        MEAN           RMS              MIN     MAX
ACIS_feb13 6004901       7.254         10.724           0.0     1059


I2 node 0  262654       7.505077        3.296922        0.0      42.0
I2 node 1  262654       7.732329        3.588738        0.0     224.0
I2 node 2  262654       7.633457        3.314088        0.0      44.0
I2 node 3  262654       7.477338        3.419936        0.0     165.0

I3 node 0  262654       8.004600        3.540096        0.0      43.0
I3 node 1  262654       8.119041        7.375692        0.0     164.0
I3 node 2  262654       7.463728        3.200272        0.0      52.0
I3 node 3  262654       7.516026        3.877958        0.0     1059.0

S2 node 0  262654       8.111439        3.232568        0.0      74.0
S2 node 1  262654       8.317383        3.660487        0.0      47.0
S2 node 2  262654       8.826325        3.904636        0.0      71.0
S2 node 3  262654       9.284040        4.376999        0.0     362.0

S3 node 0  262654       18.277765       19.708412       0.0     257.0
S3 node 1  262654       14.300494       8.405626        0.0     112.0
S3 node 2  262654       12.529013       4.532074        0.0     634.0
S3 node 3  262654       11.408769       4.130570        0.0      53.0

Jul 1999 - Feb 2013 registered-photon-map in fits

Cumulative Dose Map

TOTAL

CCD I3

CCD S3


Statistics:
 IMAGE        NPIX      MEAN             RMS            MIN    MAX
ACIS_total   6004901       1691.867         2235.573           0.0    99828


I2 node 0  262654       1413.057896     278.380163      0.0     8837.0
I2 node 1  262654       1485.994218     372.349392      0.0     32721.0
I2 node 2  262654       1515.921104     326.388421      0.0     6531.0
I2 node 3  262654       1511.130007     383.459320      0.0     9300.0

I3 node 0  262654       1587.795736     389.634964      0.0     6270.0
I3 node 1  262654       1666.900307     1264.321511     0.0     32309.0
I3 node 2  262654       1452.508092     268.582142      0.0     7071.0
I3 node 3  262654       1437.926434     285.753086      0.0     25227.0

S2 node 0  262654       2042.758984     311.890273      1068.0  28582.0
S2 node 1  262654       2179.662924     478.653695      1104.0  12026.0
S2 node 2  262654       2414.194512     474.827300      1446.0  42013.0
S2 node 3  262654       2347.610878     361.650265      1388.0  38407.0

S3 node 0  262654       3537.021212     1686.446035     1467.0  12710.0
S3 node 1  262654       4627.097841     1892.044035     0.0     12972.0
S3 node 2  262654       3574.859509     904.069547      1423.0  8989.0
S3 node 3  262654       2800.756641     445.574832      1594.0  9182.0

Integrated Exposure Maps of Last 12 Months

Nov 2012	Aug 2012	May 2012	Feb 2012

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

Feb 2013 Focal Temperature

The Mean (max) FPT:
-111.86	+/- 6.11 C
Mean Width:
0.38	+/- 0.40 days

Averaged Focal Plane Temperature

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.

Focal Plane Temperature, Sun 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)

Science Instrument Background Rates

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

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.

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HRC

DOSE of Central 4K Pore-Pairs

Please refer to Maximum Dose Trends for more details.

FEB HRC-I Dose in fits

  
        IMAGE                NPIX      MEAN    STDDEV      MIN       MAX  
HRCI_02_2013.fits          16777216   0.015    0.1226      0.0       3.0

AUG 1999 - Feb 2013 HRC-I Dose in fits

        IMAGE                NPIX      MEAN    STDDEV      MIN       MAX
HRCI_08_1999_02_2013.fits  16777216   3.936    4.762       0.0       292.0

FEB HRC-S dose fits image - no observations

No Data

AUG 1999 - FEB 2013 HRC-S Dose in fits

        IMAGE                NPIX     MEAN      STDDEV      MIN      MAX
HRCS_08_1999_02_2013.fits  16777216  14.229      23.922      0.0      1634.0

Max dose trend plots corrected for events that "pile-up" in the center of the taps due to bad position information.

HRC I: Integrated Exposure Maps of Last 12 Months

Nov 2012	Aug 2012	May 2012	Feb 2012

HRC S: Integrated Exposure Maps of Last 12 Months

Nov 2012	Aug 2012	May 2012	Feb 2012

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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.

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PCAD

ACA Trending

ACA Trending - Entire Period

ACA Trending - FEB 2013

Gyro Bias Drift

ACIS-S and HRC Celestial Location Monitoring

Science Instrument Positional Change 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).

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Radiation History

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)

Radiation Count Rates of Feb 2013

Sun Spot History

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Quarterly Trends

PCAD Temperature

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
AACBPPT	304.54	0.97	4.900e+00	1.149e+02	K	AC BASEPLATE TEMP (PRIME)
AACBPRT	299.42	0.96	4.869e+00	1.143e+02	K	AC BASEPLATE TEMP (RDNT)
AACCCDPT	256.05	0.98	4.880e+00	1.183e+02	K	AC CCD TEMP (PRI)
AACCCDRT	299.43	1.05	5.367e+00	1.268e+02	K	AC CCD TEMP (RDNT)
AACH1T	296.61	1.07	5.381e+00	1.278e+02	K	AC HOUSING TEMP (ACH1)
AACH2T	296.66	1.07	5.408e+00	1.296e+02	K	AC HOUSING TEMP (ACH2)
AAOTALT	296.25	1.07	5.394e+00	1.281e+02	K	AC OPT TEL ASSY LENS TEMP
AAOTAPMT	295.58	1.07	5.411e+00	1.260e+02	K	AC OPT TEL ASSY PRIMARY MIRROR TEMP
AAOTASMT	295.71	1.08	5.420e+00	1.292e+02	K	AC OPT TEL ASSY SECONDARY MIRROR TEMP
AAOTH2MT	296.18	1.07	5.416e+00	1.298e+02	K	AC OPT TEL ASSY SECONDARY MIRROR TEMP (HRMA)

PCAD FTS Grad

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
OHRTHR27	297.14	1.238e-02	5.034e-02	1.262e+00	K	RT 20 : PERISCOPE
OHRTHR42	294.44	7.445e-02	3.931e-01	8.923e+00	K	RT 133: PERISCOPE
OHRTHR43	294.15	0.19	9.865e-01	2.294e+01	K	RT 134: PERISCOPE
OOBAGRD3	0.22	0.12	-5.983e-01	-1.412e+01	K	RT 505 TO RT 504: PERISCOPE GRADIENT
OOBAGRD6	0.07	2.798e-03	1.144e-02	3.034e-01	K	RT 507 TO RT 506: PERISCOPE GRADIENT

Spacecraft Motions

Reaction Wheel Rotations

Note: From Feb 2010, the computation of reaction wheel rotations are slightly modified.

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Links to Past Monthly Reports

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	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2010	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2011	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2012	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2013	Jan

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If you have any questions about this page, please contact swolk@head.cfa.harvard.edu.

- M&TA MONTHLY REPORT -

February 2013

OUTLINE

Configuration/Radiation Overview for Feb 2013