Tohban Report 2015-04-15

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	== Data Gaps ==		== Data Gaps ==
		+
		+	GAP START TIME              GAP END TIME                  GAP (SEC)
		+	2015-04-08T03:05:00.000 -- 2015-04-08T03:10:00.000      300.00000
		+	2015-04-08T18:10:00.000 -- 2015-04-08T18:15:00.000      300.00000
		+	NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
		+	NO GAPS IN APP_ID = 102 (VC3-MONITOR RATES)
		+
		+	GAP START TIME              GAP END TIME                  GAP (SEC)
		+	2015-04-12T11:30:00.000 -- 2015-04-12T11:50:00.000      1200.0000
		+	GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4
		+
		+	N_GAPS          1
		+	GAP START TIME              GAP END TIME                  GAP (SEC)
		+	2015-04-12T11:30:00.000 -- 2015-04-12T11:45:00.000      900.00000
		+	NO GAPS IN APP_ID = 102 (VC3-MONITOR RATES)
	== Temperatures ==		== Temperatures ==

---

Revision as of 15:44, 15 April 2015

Tohban Reports
Start Date:	08 Apr 2015
End Date:	15 Apr 2015
Tohban:	Milo Buitrago-Casas
Tohban email:	milo@ssl.berkeley.edu
Next Tohban:	?
List all reports

Contents 1 Solar Activity 2 Memory Management 3 Spacecraft Status 4 Data Gaps 5 Temperatures 6 Detector issues 7 Other notes 8 Spacecraft Management

Solar Activity

Solar Activity was moderate during last week. Sun has been rather quiet during last couple of days with sporadic C-class flares. Currently there are three active regions on the solar disk. Particularly the AR2321 has a high probability to host a M or X class in the next couple of days.

How many GOES flares occurred?

 Flares above B, C, M, X class were     15    35     2     0

And how many of these are listed in the RHESSI flare list?

 Flares above B, C, M, X class were      4    18     2     0

And how many had EXCELLENT coverage?

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

There were RHESSI flares/GOES flares 70 / 52 over the time range 07-Apr-15 14-Apr-15

Memory Management

Generally speaking the SSR has had high values during last week oscillating between 25% and 50% and reaching a maximum value of 58% last Monday. That main problem with that high rate of filling was some noise presented in detectors 6 and 9. For today we have mitigate the noise on detector 9 increasing its front slow threshold. However, after some fruitless experiments on detector 6 we still have a high noise that introduce values of around 2800 on its valid front slow counts (just for reference well behaved detectors have values of 200-500). It is needed to take actions on detector 6 in order to avoid filling up the SSR.

Spacecraft Status

Normal as far as the Tohban can tell. It would be desirable to make a balance experiment soon.

Data Gaps

GAP START TIME GAP END TIME GAP (SEC) 2015-04-08T03:05:00.000 -- 2015-04-08T03:10:00.000 300.00000 2015-04-08T18:10:00.000 -- 2015-04-08T18:15:00.000 300.00000 NO GAPS IN APP_ID = 154 (VC1-PMTRAS) NO GAPS IN APP_ID = 102 (VC3-MONITOR RATES)

GAP START TIME GAP END TIME GAP (SEC) 2015-04-12T11:30:00.000 -- 2015-04-12T11:50:00.000 1200.0000 GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4

N_GAPS 1 GAP START TIME GAP END TIME GAP (SEC) 2015-04-12T11:30:00.000 -- 2015-04-12T11:45:00.000 900.00000 NO GAPS IN APP_ID = 102 (VC3-MONITOR RATES)

Temperatures

Detector issues

On April 09 starting at 17:20 UTC we made a few changes to detector 6 and 8. We raised thresholds on the Front Fast D6, Front Slow D6 and Rear Fast D8.

Threshold [G6]	Front Fast
Initial	0x80
Final	0xA0

Threshold [G6]	Front Slow
Initial	0x0C
Final	0x15

Threshold [G8]	Rear Fast
Initial	0x70
Final	0x80

On April 13 at 17:47UT we changed the Rear Fast threshold for detector 8:

Threshold [G8]	Rear Fast
Initial	0x80
Final	0x90

On Abril 14 starting at 14:06 UT we made the next changes on Detectors for detectors 6 and 9 that had very high values of the Front Slow valid counts.

Threshold [G9]	Front Slow
Initial	0x0C
Final	0x1A

Threshold [G6]	Front Fast
Initial	0xA0
Final	0xA8

Threshold [G6]	Front Fast
Initial	0xA8
Final	0xB0

Other notes

Spacecraft Management

Decimation	Active/Vigorous
Night time data (fronts)	None nighttime events
Night time data (rears)	None nighttime events
Require extra passes?	No
Requirement for moving pointer?	No
Attenuator operation	Normal