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Last modified: 3 September 2013

URL: http://cxc.harvard.edu/caldb/calibration/pcad.html

Calibration to CALDB File: PCAD

Return to: Calibration Index


Chandra Aspect

The root for the CALDB Dir is $CALDB/data/chandra/ .

CALDB File Type
CCNM
CALDB Dir
Filename Installation Date CALDB Version ASPECT Links
CALALIGN
(Time-dependent alignment matrix with FID light positions)

ALIGN
pcad/align/
pcadyyyy-mm-ddalignN0007.fits

1999/07/19-2002/12/01
51 files total
2008-04-02T13:00:00 3.4.4 Chandra absolute astrometric accuracy

Add ACISFIDCORR HDU to PCAD CALALIGN CALDB files
pcadyyyy-mm-ddalignN0006.fits

1999/07/19-2002/12/01
51 files total
2007-05-16T17:00:00 3.4.0 Chandra absolute astrometric accuracy
pcadyyyy-mm-ddalignN0005.fits

1999/07/19-2006/12/10
49 files total
Retired as of CALDB 3.4.0
2003-12-15T22:00:00 2.25 Chandra absolute astrometric accuracy
pcadyyyy-mm-ddalignN0004.fits

1999/07/19-2002/12/01
49 files total
Retired as of CALDB 2.25
2002-05-02T20:00:00 2.14 Chandra absolute astrometric accuracy April 2002
pcadyyyy-mm-ddalignN0003.fits

1999/07/19-2001/06/01
32 files total
Retired as of CALDB 2.14
2001-09-06T15:30:00 2.8 Absolute astrometric accuracy as of 06 September 2001
This link was outdated; removed by PCAD science staff.
pcadyyyy-mm-ddalignN0001.fits

1999/12/01-2000/11/01

Retired as of CALDB 2.8
2000-11-07T17:00:00 1.7 Absolute astrometric accuracy through October 2000
pcadyyyy-mm-ddalignN0002.fits

1999/07/19-1999/11/06

Retired as of CALDB 2.8
2000-09-14T20:30:00 1.5 Absolute astrometric accuracy through October 2000
CALRWS
(Bad reaction wheel speeds)

RWA_BSPD
pcad/rwa_bspd/
rwaD1999-08-12bspdN0001.fits 1999-08-12T12:00:00 1.0  
CALCCD
(ACA-P CCD characteristics)

CCD
pcad/ccd/
acapD1998-12-14ccdN0002.fits 2000-07-31T16:00:00 1.3  
CALCTI
(ACA-P CTI coefficients)

CTI
pcad/cti/
acapD1998-09-30ctiN0001.fits 1998-09-30T00:00:00 1.0  
CALFDC
(ACA-P field distortion coefficients)

FDC
pcad/fdc/
acapD1999-07-22fdcN0003.fits
acapD1999-08-12fdcN0002.fits

v2 retired as of CALDB 2.12
2002-02-14T17:00:00
1999-08-12T12:00:00
2.12
1.0
 
CALIMAGE
(ACA-P dark current image)

DARK_CURR
pcad/image/
acapD1998-09-18darkN0001.fits 1998-09-18T00:00:00 1.0  
CALIMAGE
(ACA-P ccd response image)

CCD_RESP
pcad/image/
acapD1998-09-18respN0001.fits 1998-09-18T00:00:00 1.0  
CALIRU
(Inertial reference unit char.)

IRU
pcad/iru/
iruD1999-08-12charN0002.fits
iruD1999-08-12charN0001.fits
2003-06-30T00:00:00
1999-08-12T12:00:00
2.23
1.0
 
CALSFMA
(Gyro scale factor/misalignment matrix)

SFMA
pcad/sfma/
gyroD1999-08-12sfmaN0001.fits 1999-08-12T12:00:00 1.0  

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Last modified: 3 September 2013
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