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DetChar (General)
koh.ueno - 11:39 Thursday 19 December 2019 (12220) Print this report
Summary of December 18
- Sensitivity & Binary range transition

Except during 0:30 pm - 2:30 pm JST, the BNS range was unstable.
Even during the relatively stable period, K1:CAL-CS_PROC_C00_STRAIN_DBL_DQ shows no small fluctuation in SNR.


- Spectral line noise

No FScan data for CAL_DARM, CAL_IMC, CAL_MICH, and CAL_STRAIN seems available at this moment.


- Lockloss data

Total lock duration: 7761 sec (2.156 hrs)
Duty cycle: 8.98%
(See https://gwdet.icrr.u-tokyo.ac.jp/~controls/summary/day/20191218/ for more details)
Comments to this report:
koh.ueno - 18:44 Friday 20 December 2019 (12253) Print this report
My previous summary for the KAGRA lock status on Dec. 18 was

> Total lock duration: 7761 sec (2.156 hrs)
> Duty cycle: 8.98%

but, to be more precise, the locked state can be further classified into two:

Total lock duration: 7761 sec (2.156 hrs) for K1:GRD-LSC_LOCK_STATE_N>=300 (the Locked (LSC) state)
Total lock duration: 6572 sec (1.826 hrs) for K1:GRD-LSC_LOCK_STATE_N=1000 (the Observing state)

The Duty cycle value I showed previously was obtained from the former figure. If we use the latter figure, it is 7.61%.
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