DGS (General)takahiro.yamamoto - 17:07 Thursday 10 July 2025 (34502)
Print this reportAccidental(?) modification of foton fileUpdate of the foton filter file of k1omc model was detected. Modified time is 2025-07-10 14:50:13 JST and it's reported on #observation@slack at 15:01. $ ls -l --full-time /opt/rtcds/kamioka/k1/chans/K1OMC.txt -rw-r--r-- 1 controls 92841 2025-07-10 14:50:13.000000000 +0900 /opt/rtcds/kamioka/k1/chans/K1OMC.txt
No change in filter modules was found on current foton filter from daily overwritten full backup at 2025-07-10 0:05 JST and from weekly differential backup at 2025-07-04 1:05 JST according to the diff command as follows. $ diff /opt/rtcds/kamioka/k1/chans/K1OMC.txt /mnt/backup/rtcds/kamioka/k1/chans/K1OMC.txt $ diff /opt/rtcds/kamioka/k1/chans/K1OMC.txt /mnt/diff_backup/opt-20250704/rtcds/kamioka/k1/chans/K1OMC.txt
There was no backup at corresponding time by There was no backup at corresponding time by foton GUI if modification was done on foton GUI. So this modification might be done on some kind of scripts, editors, etc. foton GUI makes a back up as foton file at the time of saving modification with a suffix of that time. If the modification in this time was done on foton GUI, there should be a backup file that timestam is around 7/10 14:50. But the latest backup file by foton GUI is on 6/27. $ ls -lt --full-time /opt/rtcds/kamioka/k1/chans/filter_archive/k1omc/* | head -3 -rw-r--r-- 1 controls 92841 2025-06-27 09:36:42.000000000 +0900 /opt/rtcds/kamioka/k1/chans/filter_archive/k1omc/K1OMC_1435019820.txt -rw-r--r-- 1 controls 92850 2025-06-27 09:36:41.000000000 +0900 /opt/rtcds/kamioka/k1/chans/filter_archive/k1omc/K1OMC_1435019819.txt -rw-r--r-- 1 controls 92859 2025-06-27 09:36:35.000000000 +0900 /opt/rtcds/kamioka/k1/chans/filter_archive/k1omc/K1OMC_1435019813.txt I'm not sure the behavior of foton GUI when we press SAVE without any modification. So I cannot conclude this modification was done NOT on foton GUI.
Because of no change in filter modules, - there is no impact for current calibration. - CFC bit of k1omc wasn't raised. - CFC_LATCH wasn't also raised by CAL_PROC guardian. - IFO guardian was able to keep staying in OBSERVING.