Hello Chandra Users of CIAO 4.3!
CalDB 4.4.6, the latest upgrade for the Chandra CalDB as used in CIAO
4.3 has been released as of 17:00 EDT today. The new CalDB version
includes the following:
1) The latest ACIS T_GAIN corrections (Epoch 46, May-July 2011),
affecting all ACIS OBS_IDs with DATE-OBS after 2011-02-01T00:00:00. This
is the usual periodic ACIS T_GAIN update, and the degree of PHA
adjustment is within the ordinary 2%.
2) A minor header change to ACIS -120C GAIN and downstream calibration
files. (These latter changes affect only one proprietary OBS_ID
currently, but may affect more in the future.) The change adjusts the
acceptance range of focal plane temperature ("FP_TEMP") to be the same
as the ACIS Temperature-dependent CTI correction files.
For full details see the Chandra CalDB release notes posted at:
The easiest way to upgrade your CalDB for CIAO 4.3 is to use the
"ciao-install" script, by following the instructions on the CIAO
Alternately, manual CalDB upgrade instructions and full CalDB
installation instructions are given at the CalDB downloads page:
Please contact the Helpdesk with any questions:
Chandra CalDB Manager
This archive was generated by hypermail 2b29 : Sat May 25 2013 - 01:00:09 EDT