CalDB 4.5.5.1 Public Release Notes

I. INTRODUCTION

CalDB patch version 4.5.5.1 is an upgrade to the Chandra CalDB, which includes the following item:

• ACIS QEU N0007, N0005B header corrections

For the CIAO 4.5 / CalDB 4.5.5 release notes see How CalDB 4.5.5 Affects Your Analysis.

For technical details supporting the ACIS time-dependent QEU as well as numerous other file upgrades, see the CalDB 4.5.5 Release Notes.

II. SUMMARY OF CHANGES

A. ACIS QEU N0007, N0005B header corrections

Location:	$CALDB/data/chandra/acis/qeu/
Filename:	acisD2000-01-29qeuN0007.fits acisD2000-01-29qeuN0005B.fits acisD2002-02-01qeuN0007.fits acisD2002-02-01qeuN0005B.fits acisD2004-02-01qeuN0007.fits acisD2004-02-01qeuN0005B.fits acisD2006-02-01qeuN0007.fits acisD2006-02-01qeuN0005B.fits acisD2008-02-01qeuN0007.fits acisD2008-02-01qeuN0005B.fits acisD2010-02-01qeuN0007.fits acisD2010-02-01qeuN0005B.fits

It has been pointed out that the above files, released in CalDB 4.5.5, Dec 13, 2012, lack the TELESCOP keyword in all the HDUs. Hence, with CalDB 4.5.5.1, all these are being corrected to have TELESCOP = CHANDRA in the headers. In all, there are 10 HDU's per file, and 12 files in all, therefore 120 headers have been changed. The ACIS branch index file has been regenerated so that the TELESCOP column value for these 120 listings are all set to CHANDRA, as they should be.

PIPELINES/TOOLS AFFECTED:

NONE.

THREADS AFFECTED:

NONE.