|Source and Background Lightcurve not aligned.|
|Source or Background backscale 0.|
|No CCDID keyword found in GTI table. The user has to recreate the eventlist, srctslist and bkgtslist files using the latest SAS version. |
|No GTI found to the corresponding CCD.|
|Sum of all CCD areas is empty. Please check your source and background expression.|
|GTI extension empty.|
|Light curve bin size smaller than frame time.|
|CCDs Count Difference||warning|
|A difference in the sum of the counts of single CCDs, with respect to the counts of the original light curve, has been found.|
|Events were not randomized.
corrective action: Run epproc or emproc with randomize option enabled.
|Zero Effective area. Please check your source and background expression.|
|The effective area calculated for a particular CCD is too small that arfgen gives wrong results.|
|Randomization for PN Timing or Burst not implemented|
|No PI information in the DSS|
XMM-Newton SOC -- 2021-11-30