Release 20170817

NuSTAR CALDB Release Version: 20170817

Release Type: Clock Correction Update

Summary of changes: 

CLOCK:

NuSTAR clock correction file, version 74, is available. This file is up to date through 2017-08-17.

http://www.srl.caltech.edu/NuSTAR_Public/NuSTAROperationSite/clockfile.php

IMPORTANT NOTE - The versions of clock correction files v022 to v063 were found to have unphysical discontinuities in the clock correction. Only versions v066 and later should be used in analysis.