Time of data incorrect and different for each channel.
Last Tuesday I had a strange issue where I noticed that two channels I'd asked for in ndscope had their data offset. See first attachment below. I knew the time H1:TCS-ITMY_RH_SETUPPERPOWER and H1:TCS-ITMX_RH_SETUPPERPOWER turned on should have been the same but in my ndscope they look offset by ~3hours.
When I tried to get the data today to check I wasn't going crazy, I see that both channels turn on at the same time but the time itself is different. With the same t_0 previously the channels raised to 0.5 at +7hours and +1hour. Now they increase at -8hours. See second attachment below. My alog #62569 states they were turned on at 2022-04-11 20:00 PT = 2022-04-12 03:00:00 UTC this is the time shown on the ndscope data I requested today.
I wasn't able to recreate this error but requested to data using the ndscope command with some channels and later added more channels.
Incorrect data times, see top left two plots. ^
Correct data. ^ ndscope H1:TCS-ITMY_RH_SETUPPERPOWER H1:TCS-ITMX_RH_SETUPPERPOWER -t "2022-04-12 10:24:20 UTC" &