Bugs: acis_run_hotpix

At present, the tool acis_run_hotpix is being used in the pipeline to identify cosmic-ray afterglows. The results obtained using this tool should be sufficient unless a user is interested in searching for or studying sources that have a small number of counts (i.e. less than about 10). In these situations, it may be advantageous to use the tool acis_detect_afterglow (in addition to acis_run_hotpix) to try to eliminate afterglows that have only a few events. Some care is required to ensure that acis_detect_afterglow does not eliminate a significant number of real x-ray events.

For more information, read the Cosmic-Ray Afterglows why topic.

Caveats

1. WARNING: File /tmp/hotpixel_list.fits does not have any rows.

Caveats

1. WARNING: File /tmp/hotpixel_list.fits does not have any rows.

   Some datasets will return this warning when acis_run_hotpix is run:

   # acis_classify_hotpix (CIAO 4.1): WARNING: File /tmp/hotpixel_list.fits does not have any rows.
   

   It just means that no hot pixels were identified in the observation, which is a normal occurrence.