Tohban Report 2017-01-11: Difference between revisions

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|tohban_name = Pascal Saint-Hilaire
|tohban_name = Pascal Saint-Hilaire
|tohban_email = pascal@ssl.berkeley.edu
|tohban_email = pascal@ssl.berkeley.edu
|next_tohban  = TBD
|next_tohban  = Jim
}}
}}


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No overlapping RHESSI flares to count, sorry  
No overlapping RHESSI flares to count, sorry  
   
   
== Memory Management ==
== Memory Management ==


Line 26: Line 24:


  2017-004-21:38:11 start idpu_dec_normal_vigorous
  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.
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.
Detectors 3 and 9 are recording events during spacecraft day, and for 4 minutes prior to and after daylight.




== Spacecraft Status ==
== 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:
Detectors 3 and 9 are recording events.  


http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf
Cryocooler power has been turned dow to ~75 W:


for a summary plot of recent temperatures, efficiencies and accelerometer values.
2017-004-21:34:14 start icryomain_ramp(75)


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:
Acceleration have decreased a bit (as expected, now at ~11 mg). And cold tips temps have gone down!?! By about 3 degrees. (Cold plates by about 2 degrees).


[[Image:D3_test_20161228_nodecimation.png|900px|thumb|center|'''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.]]
To avoid pesky shutter motions due to the ever-increasing detector 3f deadtime (which currently controls attenuator motions). The attenuator logic has been disabled:


2017-004-21:37:35 /idpudisarm ale  ; logic disabled
2017-004-21:37:46 /iattmove move=out1 ;thick out
2017-004-21:37:56 /iattmove move=out2 ;thin out


[[Image:D9_test_20161228_nodecimation.png|900px|thumb|center|'''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.]]
...and both attenuators are locked out. We need to be mindful of this when solar activity picks up.
 
In the figures, the low energy count rates are much higher in 2016 than they were in 2012.
 


== Data Gaps ==
== Data Gaps ==


DATA GAPS FOR 2016/12/26
Besides the usual occasional 300 s gap in VC1-SOH data, not much:
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
  DATA GAPS FOR 2017/01/07
TIME RANGE: 2016-12-28T00:00:00.000 -- 2016-12-29T00:00:00.000
  TIME RANGE: 2017-01-07T00:00:00.000 -- 2017-01-08T00:00:00.000
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 = 1 (VC1-SOH)
  NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
  NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
Line 99: Line 59:
  N_GAPS          1
  N_GAPS          1
  GAP START TIME              GAP END TIME                  GAP (SEC)
  GAP START TIME              GAP END TIME                  GAP (SEC)
  2016-12-30T05:05:00.000 -- 2016-12-31T00:00:00.000      68100.000
  2017-01-07T01:25:00.000 -- 2017-01-07T01:30:00.000      300.00000


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
== Detector issues ==
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 changes during the week.


Detectors 3 and 9 are powered on, and are recording events. No threshold or HV canges during the week.  
D3f and D9f livetimes are ~85% and ~80%, while D3r and D9r are ~85% and ~82%.


== Notes ==
== Notes ==
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| Requirement for moving pointer? || No
| Requirement for moving pointer? || No
|-
|-
| Attenuator operation || Working as expected
| Attenuator operation || Both locked out.
|-
|-
| Detector problems? || See notes above.
| Detector problems? || No.
|}
|}


Latest revision as of 19:39, 11 January 2017


Tohban Reports
Start Date: 4 January 2016
End Date: 11 January 2017
Tohban: Pascal Saint-Hilaire
Tohban email: pascal@ssl.berkeley.edu
Next Tohban: Jim
List all reports



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.

Cryocooler power has been turned dow to ~75 W: 

2017-004-21:34:14 start icryomain_ramp(75)

Acceleration have decreased a bit (as expected, now at ~11 mg). And cold tips temps have gone down!?! By about 3 degrees. (Cold plates by about 2 degrees).

To avoid pesky shutter motions due to the ever-increasing detector 3f deadtime (which currently controls attenuator motions). The attenuator logic has been disabled: 

2017-004-21:37:35 /idpudisarm ale  ; logic disabled
2017-004-21:37:46 /iattmove move=out1 ;thick out
2017-004-21:37:56 /iattmove move=out2 ;thin out

...and both attenuators are locked out. We need to be mindful of this when solar activity picks up.

Data Gaps

Besides the usual occasional 300 s gap in VC1-SOH data, not much: 

DATA GAPS FOR 2017/01/07
TIME RANGE: 2017-01-07T00:00:00.000 -- 2017-01-08T00:00:00.000
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)
2017-01-07T01:25:00.000 -- 2017-01-07T01:30:00.000       300.00000


Detector issues

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

D3f and D9f livetimes are ~85% and ~80%, while D3r and D9r are ~85% and ~82%.

Notes

Spacecraft Management

Decimation Normal/Vigorous
HLAT Decimation Rear decimation
Night time data (fronts) full-time
Night time data (rears) full-time
Require extra passes? No
Requirement for moving pointer? No
Attenuator operation Both locked out.
Detector problems? No.
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