Chandra X-Ray Observatory
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Last modified: 26 October 2016

URL: http://cxc.harvard.edu/ciao/bugs/chandra_repro.html

Bugs: chandra_repro


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Caveats


Caveats

Problem with large files  (18 Sep 2012)

chandra_repro uncompresses files into memory to be written back out to disk. With large files, this can exhaust system resources and cause the script to fail with a non-informative error message

Unable to read evt1 file
# chandra_repro (09 April 2012): ERROR read error

Workaround:

chandra_repro will use the uncompressed version of the file so the easiest work around it to gunzip the files before running chandra_repro

unix% gunzip primary/*gz secondary/*gz

dsAPEPULSEHEIGHTERR -- WARNING: pulse height is less than split threshold when performing serial CTI adjustment.

The following warning may be displayed when running chandra_repro on an ACIS observation

# acis_process_events (CIAO): The following error occurred 2 times:
    dsAPEPULSEHEIGHTERR -- WARNING: pulse height is less than split threshold when performing serial CTI adjustment.

As is discussed in the acis_process_events bug page, this warning can safely be ignored as long as the number of times printed is small compared to the total number of events.


Last modified: 26 October 2016
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