Chandra X-Ray Observatory
	(CXC)
Skip to the navigation links
Last modified: 26 October 2016

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

Bugs: fullgarf


Table of Contents

Caveats


Caveats

*** ERROR: aspect histogram acisf00459_ah4.fits[ASPHIST] contains no rows

This error is from mkgarf and occurs when a chip wasn't on for the observation. The fullgarf script attempts to calculate gARFs for ACIS chips S0-S3 if the order is less than zero or chips S3-S5 if the order is greater than zero, regardless of whether or not the chip was actually used in the observation. This error can be ignored, as it does not adversely affect the script output.

WARNING: OSIP file contains invalid data for the region
512<=CHIPX<=768 608<=CHIPY<=640 at 0.1 keV.
WARNING: OSIP file contains invalid data for the region
512<=CHIPX<=768 608<=CHIPY<=640 at 0.277 keV.

This warning is innocuous. Events at energies < 0.3 keV are outside the supported range of wavelength by HETG/ACIS-S (the events would fall off the chips). The gARFs should be fine for use in the analysis.


Last modified: 26 October 2016
Smithsonian Institute Smithsonian Institute

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email:   cxchelp@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2017. All rights reserved.