Skip to the navigation links
Last modified: 19 January 2010

URL: http://cxc-newtest.cfa.harvard.edu/ciao4.2/caveats/hrc_gaps.html

Caveat: Time Gaps in HRC Data



Due to an error in standard data processing (SDP) between level 0 and level 1, HRC drops ~2.05s at varying intervals. This problem affects all HRC data (-I,-S,-SI) regardless of gratings. For long observations this produces more data gaps than is necessary, which is a nuisance for Fourier transforms.

This problem was corrected in version DS 6.6 of SDP.


Last modified: 19 January 2010