Tohban Report 2017-01-11

From RHESSI Wiki

Solar Activity

Very quiet this week, except for a few flares in the high Bs in the past day or so.

How many GOES flares occurred?

 Flares above B, C, M, X class were      2     0     0     0

RHESSI flare list contains 0 over the time range 03-Jan-17 10-Jan-17

No overlapping RHESSI flares to count, sorry

Memory Management

Decimation was changed to Normal/Vigorous (from quiet/vigorous) last Wednesday. :

2017-004-21:38:11 start idpu_dec_normal_vigorous

The SSR has been hovering near the 20% level at the end of pass sets, and is set to be much lower than that at the end of today's set. It was peaking at ~35% at beginning of the pass set, meaning that there was a bit of decimation going on some of the time.

Detectors 3 and 9 are recording events during spacecraft day, and for 4 minutes prior to and after daylight.

Spacecraft Status

Detectors 3 and 9 are recording events. The cold tips are 128.6 and 126.2 K as of 3-Jan-2017, 17:00 UT. The cold plates, 1 and 2 are 154.3 and 155.3 K. Cryocooler power is steady at 80W, cryocooler efficiencies are in the range 0.026 to 0.0275. Cryocooler transients are frequent, resulting in a standard deviation of approximately 1 degree in the daily average cold tip temperatures. See:

http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf

for a summary plot of recent temperatures, efficiencies and accelerometer values.

It has been noted recently that the SSR has been filling at a fast rate, resulting in low-energy decimation, and the SSR staying near 50%, the value at which the decimation starts. The extra memory fill is due to low energy counts:

Figure 1:This is a comparison of the D3F eventlist spectrum for 2016-12-28/23:45 to 23:50 (white line) with the same time range in 2012 (red line). The rate is larger for all channels, but much larger for the low energy channels < 50.

Figure 2:This is a comparison of the D9F eventlist spectrum for 2016-12-28/23:45 to 23:50 (white line) with the same time range in 2012 (red line). The rate is larger for all channels, but much larger for the low energy channels < 50.

In the figures, the low energy count rates are much higher in 2016 than they were in 2012.

Data Gaps

DATA GAPS FOR 2016/12/26

TIME RANGE: 2016-12-26T00:00:00.000 -- 2016-12-27T00:00:00.000
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2016-12-26T13:25:00.000 -- 2016-12-26T13:35:00.000       600.00000
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2016-12-26T04:50:00.000 -- 2016-12-26T06:10:00.000       4800.0000

DATA GAPS FOR 2016/12/27

TIME RANGE: 2016-12-27T00:00:00.000 -- 2016-12-28T00:00:00.000
NO GAPS IN APP_ID = 1 (VC1-SOH)
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
NO GAPS IN APP_ID = 102 (VC3-MONITOR RATES)

DATA GAPS FOR 2016/12/28

TIME RANGE: 2016-12-28T00:00:00.000 -- 2016-12-29T00:00:00.000
NO GAPS IN APP_ID = 1 (VC1-SOH)
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
NO GAPS IN APP_ID = 102 (VC3-MONITOR RATES)

DATA GAPS FOR 2016/12/29

TIME RANGE: 2016-12-29T00:00:00.000 -- 2016-12-30T00:00:00.000
NO GAPS IN APP_ID = 1 (VC1-SOH)
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           6
GAP START TIME              GAP END TIME                   GAP (SEC)
2016-12-29T08:20:00.000 -- 2016-12-29T08:30:00.000       600.00000
2016-12-29T13:10:00.000 -- 2016-12-29T16:40:00.000       12600.000
2016-12-29T17:25:00.000 -- 2016-12-29T17:40:00.000       900.00000
2016-12-29T19:15:00.000 -- 2016-12-29T19:30:00.000       900.00000
2016-12-29T22:20:00.000 -- 2016-12-29T22:25:00.000       300.00000
2016-12-29T23:35:00.000 -- 2016-12-29T23:50:00.000       900.00000

DATA GAPS FOR 2016/12/30

TIME RANGE: 2016-12-30T00:00:00.000 -- 2016-12-31T00:00:00.000
NO GAPS IN APP_ID = 1 (VC1-SOH)
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2016-12-30T05:05:00.000 -- 2016-12-31T00:00:00.000       68100.000

DATA GAPS FOR 2016/12/31

TIME RANGE: 2016-12-31T00:00:00.000 -- 2017-01-01T00:00:00.000
NO GAPS IN APP_ID = 1 (VC1-SOH)
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)

2016-12-31T00:00:00.000 -- 2017-01-01T00:00:00.000 86400.000

DATA GAPS FOR 2017/01/01

TIME RANGE: 2017-01-01T00:00:00.000 -- 2017-01-02T00:00:00.000
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
N_GAPS           3
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-01-01T14:30:00.000 -- 2017-01-01T14:40:00.000       600.00000
2017-01-01T16:10:00.000 -- 2017-01-01T16:15:00.000       300.00000
2017-01-01T17:50:00.000 -- 2017-01-01T17:55:00.000       300.00000
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-01-01T14:30:00.000 -- 2017-01-01T14:35:00.000       300.00000
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-01-01T00:00:00.000 -- 2017-01-02T00:00:00.000       86400.000

DATA GAPS FOR 2017/01/02

TIME RANGE: 2017-01-02T00:00:00.000 -- 2017-01-03T00:00:00.000
NO GAPS IN APP_ID = 1 (VC1-SOH)
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-01-02T13:15:00.000 -- 2017-01-02T17:20:00.000       14700.000
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-01-02T00:00:00.000 -- 2017-01-03T00:00:00.000       86400.000

Detector issues

Detectors 3 and 9 are powered on, and are recording events. No threshold or HV canges during the week.

Notes

Spacecraft Management