Chandra X-Ray Observatory (CXC)
Skip to the navigation links
Search the CIAO website or contact the CXC HelpDesk
Last modified: 9 November 2011

URL: http://cxc.harvard.edu/ciao4.4/bugs/dmappend.html

Bugs: dmappend

Return to: Bug List Index

For detailed information and examples of running this tool, refer to the dmappend ahelp file.

Table of Contents

Caveats

Bugs

Caveats

Appending a region block may affect the output file GTIs  (28 Feb 2011)

When appending a region block from one FITS file to another FITS file, the GTIs from the input file are applied to the output. To avoid this, use a subspace filter to ignore the input GTIs: 

unix% dmcopy "evt2_repro.fits[@gti.fits]" evt2_new_gti.fits
unix% dmappend "evt2_repro.fits[region][subspace -time]"  evt2_new_gti.fits

The output file, evt2_new_gti.fits, will contain the GTIs applied from the file gti.fits. The GTIs (time subspace) of the evt2_repro.fits file are ignored.

Bugs

Segmentation fault if file is write-protected.  (07 Mar 2008)

dmappend segmentation faults when trying to append to a write-protected file


Last modified: 9 November 2011
CXC logo

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email: cxcweb@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2012. All rights reserved.