Tohban Report 2017-01-25
From RHESSI Wiki
|Start Date:||18 January 2017|
|End Date:||25 January 2017|
|List all reports|
Two new active regions (12627, 12628) developed and are currently roughly speaking in the center of the solar disk.
However, the Sun was mostly quiet with a goes base level around B0. On January 21, three C-flares occurred with good RHESSI coverage.
The hsi_tohban_flare_counter is currently not working because the quicklook data processing doesn't recognize the flares.
Decimation was normal/vigorous for the full time period, with the SSR at about 0% at the end of each day's BGS contacts.
On January 19, Detector 8 has been switched off and Detector 1 has been switched on.
Detectors 1 and 3 are recording events.
The Cryocooler power is steady at 75W. The cold tip and cold plate temperatures have come down with the sun fraction running through a maximum on January 21. The cold tips are currently at about 124 and 126K, and the cold plates are at about 147 and 148K. For details see:
The Attenuators logic has been re-enabled on January 23 because of increasing probability of flares around 50% for C-flares, 10% for M-flares and non-zero for X-flares.) Det 3 is used for the attenuator logic and the thresholds have been set to corresponding to a deadtime of 9%. The current deadtime Det.3 is about 5%. However, it's expected that the deadtime will slightly increase with decreasing sun fraction and rising detector temperatures.
|HLAT Decimation||Rear decimation|
|Night time data (fronts)||plus/minus 4 minutes from daylight|
|Night time data (rears)||plus/minus 4 minutes from daylight|
|Require extra passes?||No|
|Requirement for moving pointer?||No|
|Attenuator operation||logic enabled|
|Detector problems?||See notes above.|