david.barker@LIGO.ORG - posted 12:02, Monday 24 April 2017 (35750)
analysis of DMT issues late Sunday night
Looking at the HofT frame files around the time of the problem late last night Hanford time:
Each HofT directory (named by the 6 most significant digits in the GPS time) should have 2500 frame files in them, 117705 has 2498 files (missing two).
The two frame files which are missing are:
| file | time (UTC) | time (PDT) |
| H-H1_DMT_C00-1177050000-4.gwf | Apr 24 2017 06:19:42 UTC | Apr 23 2017 23:19:42 PDT |
| H-H1_DMT_C00-1177050356-4.gwf | Apr 24 2017 06:25:38 UTC | Apr 23 2017 23:25:38 PDT |
Note that the first missing channel is the first one in the directory, maybe a directory rotation error?
I'm not sure if the bad data started at 117705000 or 1177050356 or another time.