MTA Monitoring Report 05/17/02 - 05/23/02

Archive of monthly reports

Radiation

A radiation environment is very active during this period.
05/18:

A Radiation violation of P3 (130Kev) has been observed by ACE Observed = 4.1987e+08 (limit = fluence of 3.6e8 particles/cm2-ster-MeV within 2 hours). This violation was related to a full halo CME observed on 05/16/02.

A Radiation violation of P3 (130Kev) has been observed by ACE Observed = 3.6948e+08 (limit = fluence of 3.6e8 particles/cm2-ster-MeV within 2 hours). Likely source of this is series of 3 long duration M & C flares (each of which had an associated CME) starting on 5/22.

Detrended CTI

CTI analysis is now computed with "detrending" derived from reject counters for all imaging CCDs

Average of ACIS-I CCDs (MnKa) slope 1.071e-8 CTI/day
Detrended slope 1.011e-8 CTI/day

ACIS Warm Pixels

The following pixels consistently showed a bias level more than 5 sigma away the chip's mean level during this period.
We suspect some of the recurring bad pixels may be due to biases which are taken just after perigee, when the focal plane is somewhat warm. For more information see the link above and MTA monthly reports.

	CCD0	CCD2	CCD3	CCD4	CCD5	CCD6	CCD7	CCD8	CCD9
New this week/ Reappeared
Previously reported - still observed	(995,200)	(483,816)	(811,637)	(227,467)	(1-3,775-1024) (226,565) (232-245,313) (509,spurious rows) (510-511,775-1024) (512,775)(513,776-1024) (514,780)(514,783) (514,786)(514,798-799) (514,803)(514,806-807) (514,818)(514,828) (514,850)(514,871) (514,940)(514,948) (515,1)(515,2) (607,281) (1022,4)(1022,166)	(360,249) (766,501)	(1-3,1-114) (1-3,775-1024) (4,spurious rows) (509,spurious rows) (510-511,775-1024) (512,775) (513-515,775-1024) (516,spurious rows) (1021,spurious rows)	(62,482) (587,544) (952,1)	(150,373)
Previously reported - not observed during this period

ACIS Focal Plane Temperature

Day (DOY)	Temp (C)	Width (Days)
137.40	-115.51	0.24
140.01	-116.80	0.28
142.71	-117.28	0.11

SIM Movements

Telemetry

1CRAT (COLD RADIATOR TEMP. A): yellow warning. Max: 152.4 (upper yellow limit: 148.16)
1CRBT (COLD RADIATOR TEMP. B): yellow warning. Max: 152.4 (upper yellow limit: 148.16)
HKBBIASLEAKI (HK B bias leakage current): yellow warning. Max: 0.51 (upper yellow limit: 0.50)
FAMTRTEMP (FA Motor Temperature): yellow warning. Max: 286.65 (upper yellow limit: 282.0)
BOXTEMP (SEA Box Temperature): yellow warning. Max: 292.65 (upper yellow limit: 292.0)

HKBBIASLEAKI (HK B bias leakage current): yellow warning. Max: 0.56 (upper yellow limit: 0.50)
TEPHIN (Ephin Sensor Housing Temp): yellow warning. Max: 300.26 (upper yellow limit: 300.2)
5EPHINT (EPHIN TEMP ): yellow warning. Max: 300.25 (upper yellow limit: 300.0)
OOBTHR56 (TFTE AFT CYLINDER ): yellow warning. Max: 288.74 (upper yellow limit: 288.6)
HETG Insertion

1CRAT (COLD RADIATOR TEMP. A): yellow warning. Max: 150.0 (upper yellow limit: 148.16)
1CRBT (COLD RADIATOR TEMP. B): yellow warning. Max: 150.0 (upper yellow limit: 148.16)
HKBBIASLEAKI (HK B bias leakage current): yellow warning. Max: 0.58 (upper yellow limit: 0.50)
TEPHIN (Ephin Sensor Housing Temp): yellow warning. Max: 301.06 (upper yellow limit: 300.2)
5EPHINT (EPHIN TEMP ): yellow warning. Max: 300.67 (upper yellow limit: 300.0)
OOBTHR56 (TFTE AFT CYLINDER ): yellow warning. Max: 288.74 (upper yellow limit: 288.6)
HETG Retraction

1CRAT (COLD RADIATOR TEMP. A): yellow warning. Max: 150.0 (upper yellow limit: 148.16)
1CRBT (COLD RADIATOR TEMP. B): yellow warning. Max: 150.0 (upper yellow limit: 148.16)

1DPICACU(DPA INPUT CURRENT A ): yellow warning. Min: 0.40 (lower yellow limit: 0.9 )
1DPICBCU(DPA INPUT CURRENT B ): yellow warning. Min: 0.25 (lower yellow limit: 0.7 )
1DPPWRA(DPA POWER A ): yellow warning. Min: 11.88 (lower yellow limit: 23.4 )
1DPPWRB(DPA POWER B ): yellow warning. Min: 7.43 (lower yellow limit: 18.2 )

IRUs

• Gyro Bias Drift
• Gyro Bias Drift Histogram

Recent Observations

"Prob" means that there was probably bad time data included in the manual runs. This will be corrected in future processing.

Trending

Trends last reported on Mar 07.

• Spacecraft Electronics


• Spacecraft Electronics Side A


• Spacecraft Electronics Side B


• Spacecraft Temperature
• Main Temperature
• Ancillary Temperture
• Battery Temperature