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DMG (Data transfer & archiving)
takahiro.yamamoto - 11:10 Thursday 03 July 2025 (34440) Print this report
Data transfer during network disconnection
Network disconnection was occurred around noon yesterday (see also klog#34437).

Data transfer of DAQ GWF files during network disconnection was completed around 3:30 by the re-send process.
Re-sent files are available in the attachment.

1535 (1-second long) frames are missing in K-K1_llhoft-1435459584-4096.gwf which is one of the LL GWF files.
Missing frames must be re-sent from LL server if they are still remaining on spool.
Or missed period must be re-provided as the offline h(t) if they already vanished on spool.
Non-image files attached to this report
Comments to this report:
takahiro.yamamoto - 12:35 Thursday 03 July 2025 (34441) Print this report

Because of differences in the timing of a file dump processes and/or a delay of re-launching the LL calibration pipeline, a time segment of missing frames in the LL GWF file and one of the re-sent DAQ GWF files are slightly difference. An exact time segment of missing frames in the LL GWF file is [1435460351, 1435461886).

In this period, IFO was in OBSERVING as shown in Fig.1. Plot region is 4096s since GPS=1435459584 which is a same time epochs as the relavant file and missing period is represented by T1 and T2 cursors. On the other hand, there was no SIGNIF (and also LOW_SIGNIF) candidates duirng the relavant period (see also candidate list). So there is no urgency of filling missed frames in the LL GWF file for now. Treatment of this issue should depend on how will we do on the open data.

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