NuSTAR CALDB Release Version: 20200510 Release 20200510 includes a new release of the CLOCKFILE, v101 CLOCKFILE: ========== This is a major upgrade of the NuSTAR clock correction file. Details and comparisons to the previous clock correction file can be found here: http://www.srl.caltech.edu/NuSTAR_Public/NuSTAROperationSite/clockfile.php The clock correction file keeps the NuSTAR relative time (after barycentric corrections) accurate to better than 100 micros and accounts for drifts in the NuSTAR clock caused by temperature variations. This clockfile is compatible with the current version of barycorr. See the above link or the barycorr fhelp file for its usage.