Chandra X-Ray Observatory
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Chandra Electronic Announcement #107

CHANDRA ELECTRONIC ANNOUNCEMENT NUMBER 107

Contents: CalDB 4.6.2 Released
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Item 1: CalDB 4.6.2 Released

Hello, CIAO Users

As of July 09, 2014 the CXC has released Chandra CalDB version 4.6.2,
which includes the following upgrades affecting CIAO users of ACIS
observations:

ACIS T_GAIN Epoch 57 ACIS CONTAM version N0009

The CalDB 4.6.2 upgrade also includes upgrades to the PCAD "CALALIGN"
files, which do not affect CIAO users directly; they are used in ASPECT
Level 1 processing. The new files will correct small astrometry errors
that have been identified in the PCAD system due to temperature drifts
beginning in mid-2012.

For information and technical details on the specific upgrades, see the
CalDB 4.6.2 release notes at

http://cxc.cfa.harvard.edu/caldb/downloads/releasenotes.html

See also "How CalDB 4.6.2 Affects Your Analysis" at
http://cxc.cfa.harvard.edu/ciao/releasenotes/ciao_4.6.1_release.html#
HowCALDB4.6.2AffectsYourAnalysis 

To download and install CalDB 4.6.2 on
your system, you may use the ciao-install script available at the CIAO
web page: 
http://cxc.cfa.harvard.edu/ciao/download/ 

Manual download and installation instructions are also available at
http://cxc.cfa.harvard.edu/caldb/downloads/ 

As always, please send questions and requests for enhancements to the CXC HELPDESK
(http://cxc.harvard.edu/helpdesk/).

Dale Graessle, Chandra CalDB Manager
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Last modified: 07/09/14

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