MTA Monitoring Report 3/30/01 - 04/05/01

ACIS fluence alert issued on Sat, 31 Mar 2001 05:10:01 EST
ACIS fluence: 1.00e+09 p/(cm^2-sr-MeV) (threshold 1.00e+09)
Rates subside, no action taken

SCS107 ran at 2001:93:02:22 GMT due to EPHIN E1300 channel violation
Science loads restarted at 2001:96:05:55 (obsid 2000)
Total lost time: 3 days 3 hours 33 minutes (272 ks)
Rad zone passage: about 9.5 hours (34.2 ks)
Lost science time: 238 ks
Affected obsids: 1578 (partial), 2145, 2143, 2235, 2236, 2237, 2238, 1660

CTI Trend

Average of ACIS-I CCDs (MnKa) slope 1.817e-8 CTI/day
Detrended slope 1.320e-8 CTI/day

ACIS Focal Temperature

For this period, 3 peaks are observed.

       Day (DOY)       Temp (C)        Width (DAY)
       -------------------------------------------
	89.81           -115.0          0.27
        92.48           -111.5          0.54  -small shoulder on rising side
        95.08           -114.4          0.31

MTA Problem Tracking

No new or reopened problems were reported in this period

Following msids are still coming
ES2P5CV, 1DPDBBON, ES1P5CV

SIM Movements

6 TSC moves this period
weekly average time/step 0.00154 s
mission average time/step 0.00139 s

Telemetry

On 3/30, a few sim and spacecraft temperature msids triggered warnings:

3RCTUBPT (RCTU BASEPLATE (+X) ABORTHTR TSC2 TEMP) hit an yellow warning with the max of 277.72 (upper yellow limit: 276.5)

BOXTEMP (SEA Box Temperature) hit an yellow warning with the max of 293.15 (upper yellow limit: 292)

FAMTRTEMP (FA Motor Temperature) hit an red warning with the max of 285.2 (upper red limit: 285)

TSCIUSF1 (SC-IUS FITTING-1 TEMP) hit a red warning with the max of 352.84 (upper red limit: 349.7)

TSCIUSF8 (SC-IUS FITTING-8 TEMP) hit a red warning with the max of 351.27 (upper red limit: 349.7)

TPZLGABM (+Z LOW-GAIN ANTENNA BOOM TEMP) triggered lower yellow warning with min of 207.85 (lower yellow limit: 208)

Also on 3/30:

ELBI (LOAD BUS CURRENT (HIGH RANGE)), several dips into yellow (limit 52) and red (limit 51) with min of 50.1

On 3/31-4/01:

TPZLGABM (+Z LOW-GAIN ANTENNA BOOM TEMP) triggered lower yellow warning with min of 207.85 (lower yellow limit: 208)

On 4/02-4/05:

1DPPWRB (computed ACIS Electronics-DPA POWER B) triggered lower red warning with min of 7.53 (lower red limit: 8.0)

On 4/02:

Nominal HETG retraction

Recent Observations

The ACA Problem is in the specified handling of guide star positional errors. This issue in not significant to the final product and so is being worked at low priority.

OBSID	DETECTOR	GRATING	TARGET	ANALYSIS	ACA
1578	ACIS-S	NONE	NGC4111	Partial	PROBLEM
2062	ACIS-S	NONE	NGC 4314	OK	OK
2093	ACIS-S	HETG	NGC 3783	IMAGE /GRAT-not yet aval.	PROBLEM
1887	ACIS-S	HETG	ER_VUL	IMAGE /GRAT	PROBLEM
1014	ACIS-S	HETG	PKS2155-304	IMAGE /GRAT	OK
1869	HRC-S	LETG	EPSILON ERI	IMAGE /GRAT	OK

MSID	DESCRIPTION	COMMENTS
*5EIOT	EIO TEMP	- Upward trend from 310 to 335, small dip from about DOM 580 to 605
*5EPHINT	EPHIN TEMP	- Upward trend from 270 to 295, small dip from about DOM 580 to 605
*HKABIASLEAKI	EPHIN HOUSEKEEPING A-BIAS: LEAKAGE CURRENT	- Upward trend from 0.1 to 1.0, small dip from about DOM 580 to 605
*HKBBIASLEAKI	EPHIN HOUSEKEEPING B-BIAS: LEAKAGE CURRENT	- Upward trend from 0.0 to 0.25, small dip from about DOM 580 to 605
*HKCBIASLEAKI	EPHIN HOUSEKEEPING C-BIAS: LEAKAGE CURRENT	- Upward trend from 1 to 8, small dip from about DOM 580 to 605
*HKDBIASLEAKI	EPHIN HOUSEKEEPING D-BIAS: LEAKAGE CURRENT	- Upward trend from 1 to 10, small dip from about DOM 580 to 605
HKEBIASLEAKI	EPHIN HOUSEKEEPING E-BIAS: LEAKAGE CURRENT	- Upward trend from 1 to 8
*HKEBOXTEMP	EPHIN HOUSEKEEPING EBOX	- Upward trend from 275 to 295, small dip from about DOM 580 to 605
*HKFBIASLEAKI	EPHIN HOUSEKEEPING F-BIAS: LEAKAGE CURRENT	- upward trend from 0 to 0.3, small dip from about DOM 580 to 605
HKGHIV	EPHIN HOUSEKEEPING G-HIGH VOLTAGE	- Flat @ 901.45 after DOM 150
HKN6I	HK 6 Volts Rail - Current	- Scattered between 86 and 97, more at higher end
HKN6V	HK -6 Volts Rail - Voltage	- Scattered between -5.97 and -5.92, mostly -5.92
HKP27I	HK 27 Volts Rail - Current	- Upward trend from 3.7 to 4.4, steeper after DOM 400
HKP27V	HK 27 Volts Rail - Voltage	- Flat @26.91
*HKP5I	HK 5 Volts Rail - Current	- Scattered between 39 and 42,more at the lower end, step up DOM 450 and again DOM 500, small dip from about DOM 580 to 605
HKP5V	HK 5 Volts Rail - Voltage	- Flat around 5.13 after DOM 150
HKP6I	HK 6 Volts Rail - Current	- Scattered between 144 and 151, more at the higher end
HKN6V	HK -6 Volts Rail - Voltage	- Around 5.8, slight downward trend
TEIO	EPHIN ELECTRONICS HOUSING TEMP	- Upward trend from 280 to 300
*TEMPHIN	EPHIN SENSOR HOUSING TEMP	- Upward trend from 270 to 295, small dip from about DOM 580 to 605

Ephin Housekeeping

MSID	DESCRIPTION	COMMENTS
EIOSTATUS_A	EIO Status Flg A	- Flat @ 0.0
EIOSTATUS_B	EIO Status Flg B	- Flat @ 0.0
EIOSTATUS_C	EIO Status Flg C	- Flat @ 0.0
EIOSTATUS_D	EIO Status Flg D	- Flat @ 0.0
EIOSTATUS_F	EIO Status Flg E	- Flat @ 0.0
EIOSTATUS_G	EIO Status Flg F	- Flat @ 0.0
EIOSTATUS_H	EIO Status Flg H	- Flat @ 0.0
EPHSIMSTATUS	EPHIN Simulation Status	- Flat @ 128
HKCMDSUCCESS	HK Command Successful	- Flat @ 0.0
HKRETRYNEED	HK Retry needed?	- Flat @ 0.0
HKRETURNCODE	HK Return Code	- Flat @ 0.0
HKTIMATIMOUNT	HK Timer A Timeout	- Flat @ 0.0
HKTIMDTMOUT	HK Timer D Timeout	- Flat @ 0.0
SCCMDSUCCESS	SciCommand Successful	- Flat @ 0.0
SCRETRYNEED	Sci Retry needed?	- Flat @ 0.0
SCRETURNCODE	Sci Return code	- Flat @ 0.0
TCCMDSUCCESS	TC Command Successful	- Flat @ 0.0
TCNAKSENT	TC NAK Sent?	- Flat @ 0.0
TCRETRYNEED	TC Tetry needed	- Flat @ 0.0
TCRETURNCODE	TC Return Code	- Flat @ 0.0
TCTIMATIMOUT	TC Timer A Timeout	- Flat @ 0.0
TCTIMDTIMOUT	TC Timer D Timeout	- Flat @ 0.0
TELECMDCNT	Telecommand Count	- Flat @ 0.0
TELECMDCDD	Telecommand Code	- Flat @ 0.0

Ephin Rates

MSID	DESCRIPTION	COMMENTS
SCA00	Sci single detector counter A00	- Scatter between 2.5 and 6.5 (log)
SCA01	Sci single detector counter A01	- Scatter between 2.5 and 5.5 (log)
SCA02	Sci single detector counter A02	- Scatter between 2.5 and 5.5 (log)
SCA03	Sci single detector counter A03	- Scatter between 2.5 and 5.5 (log)
SCA04	Sci single detector counter A04	- Scatter between 2.5 and 5.5 (log)
SCA05	Sci single detector counter A05	- Scatter between 2.5 and 5.5 (log)
SCB00	Sci single detector counter B00	- Scatter between 2.5 and 6.5 (log)
SCB01	Sci single detector counter B01	- Scatter between 200 and 1000, more at the lower end
SCB02	Sci single detector counter B02	- Scatter between 200 and 1000, more at the lower end
SCB04	Sci single detector counter B04	- Scatter between 200 and 1000, more at the lower end
SCB05	Sci single detector counter B05	- Scatter between 200 and 1000, more at the lower end
SCC00	Sci single detector counter C0	- Scatter between 3.5 and 6.5, more at both extreme
*SCCT1	Sci coincidence counter CT1	- Downward trend between 1 and 6, flatter after DOM 400, increasing since DOM 550
*SCCT2	Sci coincidence counter CT2	- Downward trend between 1 and 6, flatter after DOM 400, increasing since DOM 550
*SCCT3	Sci coincidence counter CT3	- Downward trend between 1 and 6, flatter after DOM 400, increasing since DOM 550
*SCCT4	Sci coincidence counter CT4	- Downward trend between 1 and 6, flatter after DOM 400, increasing since DOM 550
*SCCT5	Sci coincidence counter CT5	- Downward trend between 1 and 6, flatter after DOM 400, increasing since DOM 550
SCD0	Sci single detector counter D0	- Around 3.5 in log scale, but scattered upward to 6 in log
SCE0	Sci single detector counter E0	- Around 3.5 in log scale, scattered upward to 5 in log
SCF0	Sci single detector counter F0	- Around 4 in log scale, scattered upward of 5.5 in log
SCG0	Sci single detector counter G0	- Around 4 in log scale, scattered upward of 6.5 in log
SCH25GR	Sci coincidence counter H25GR	- Flat @0.0 some scatter to 0.1
SCH25S1	Sci coincidence counter H25S1	- Flat @0.0 some scatter to 0.1
SCH25S23	Sci coincidence counter H25S23	- Flat @0.0 some scatter to 0.1
SCH41GR	Sci coincidence counter H41GR	- Flat @0.0 some scatter to 0.05
SCH41S1	Sci coincidence counter H41S1	- Flat @0.0 some scatter to 0.05
SCH41S23	Sci coincidence counter H41S23	- Flat @0.0 some scatter to 0.1
SCH4GR	Sci coincidence counter H4GR	- Flat @0.0 scatter to 1.0
SCH4S1	Sci coincidence counter H4S1	- Flat @0.0 scatter to 1.5
SCH8GR	Sci coincidence counter H8GR	- Flat @0.0 some scatter to 0.4
SCH8S1	Sci coincidence counter H8S1	- Flat @0.0, some scatter to 0.6
SCH8S23	Sci coincidence counter H8S23	- Flat @0.0 some scatter to 0.7
SCP25GR	Sci coincidence counter P25GR	- Flat @0.0 some scatter to 1.5
SCP25S	Sci coincidence counter P25S	- Flat @0.0 some scatter to 5
SCP41GR	Sci coincidence counter P41GR	- Flat @0.0 some scatter to 0.3
SCP41S	Sci coincidence counter P41S	- Flat @0.0 some scatter to 0.8
SCP4GR	Sci coincidence counter P4GR	- Slight upward trend, mostly 0, some scatter to 60
SCP4S	Sci coincidence counter P4S	- Slight upward trend, mostly 0, some scatter to 250
SCP8GR	Sci coincidence counter P8GR	- Slight upward trend, mostly 0, some scatter to 25
SCP8S	Sci coincidence counter P8S	- Slight upward trend, mostly 0, some scatter to 100

Ephin Key Rates

MSID	DESCRIPTION	COMMENTS
SCCT0	Sci coincidence counter CT0	- Slight downward trend, flatter after DOM 400, scatter to 2 to 16
SCE1300	Sci coincidence counter E1300 rate	- Scattered between 0 and 4,but more at the both extremes (in log scale)
SCE150	Sci coincidence counter E150 rate	- Scatter between 1 and 5, but more at the both extremes (in log scale)
SCE300	Sci coincidence counter E300 rate	- Scatter between 1 and 5, but more at the both extremes (in log scale)
SCE3000	Sci coincidence counter E3000	- Flat @0.0, scatter up to 50
SCH25GM	Sci coincidence counter H25GM	- Flat @0.0, scatter up to 500
SCH41GM	Sci coincidence counter H41GM	- Flat @0.0, scatter up to 6
SCH4GM	Sci coincidence counter H4GM	- Flat @0.0, scatter up to 1.5
SCH8GM	Sci coincidence counter H8GM	- Flat @0.0, scatter up to 400
*SCINT	Sci coincidence counter INT	- Downward trend between 110 and 70, flatter after DOM 400, increasing since DOM 550
SCP25GM	Sci coincidence counter P25GM	- Flat @0.0, scatter up to 5 in log scale
SCP41GM	Sci coincidence counter P41GM	- Flat @0.0, scatter up to 30
SCP4GM	Sci coincidence counter P4GM	- Mostly 0, also around 5 in log scale, scatter between 0 and 6 in log
SCP8GM	Sci coincidence counter P8GM	- Mostly 0, also around 5 in log scale, scatter between 0 and 6 in log