MTA Monitoring Report 03/29/02 - 04/04/02

Archive of monthly reports

SCS107 ran at 2002:092:17:50 UT due to the anomalous Ephin failure flag.
Science resumed at 2002:093:16:03.
Lost science time: 70.9 ksec
Affected obsids: 2668, 3025, 2669, 3142

Radiation

Quiet.

CTI Trend

Average of ACIS-I CCDs (MnKa) slope 1.102e-8 CTI/day
Detrended slope 1.086e-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) (262,565) (232-245,313) (509,spurious rows) (510-511,775-1024) (512,775) (513,776-1024) (514,786) (514,850) (514,871) (514,940) (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) (1021,1) (1021,198) (1021,408) (1021,684) (1022,775)	(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)
89.84	-118.25	0.14
92.42	-114.05	0.80

SIM Movements

Telemetry

HKBBIASLEAKI (HK B bias leakage current): yellow warning. Max: 0.55 (upper yellow limit: 0.5)
TEPHIN (EPHIN SENSOR HOUSING TEMP): yellow warning. Max: 300.55 (upper yellow limit: 300.2)
5EPHINT (EPHIN TEMP): yellow warning. Max: 300.25 (upper yellow limit: 300.0)
TEMPHOUS (temp 2 - AC housing): yellow warning. Max: 288.35 (upper yellow limit: 288.0)

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)
1CRATC (COLD RADIATOR TEMP. A): yellow warning. Max: -123.15 (upper yellow limit: -125.0)
1CRBTC (COLD RADIATOR TEMP. B): yellow warning. Max: -123.15 (upper yellow limit: -125.0)
HKBBIASLEAKI (HK B bias leakage current): yellow warning. Max: 0.56 (upper yellow limit: 0.5)
TEPHIN (EPHIN SENSOR HOUSING TEMP): yellow warning. Max: 300.55 (upper yellow limit: 300.2)
5EPHINT (EPHIN TEMP): yellow warning. Max: 300.25 (upper yellow limit: 300.0)
HETG Retraction

LETG Insertion/Retraction

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)
1CRATC (COLD RADIATOR TEMP. A): yellow warning. Max: -120.75 (upper yellow limit: -125.0)
1CRBTC (COLD RADIATOR TEMP. B): yellow warning. Max: -120.75 (upper yellow limit: -125.0)

1DPICACU (DPA INPUT CURRENT A): yellow warning. Min: 0.39 (lower yellow limit: 0.9) - due to SCS 107 trip
1DPICBCU (DPA INPUT CURRENT B): yellow warning. Min: 0.25 (lower yellow limit: 0.7) - due to SCS 107 trip
1DPPWRA (DPA POWER A): yellow warning. Min: 11.69 (lower yellow limit: 23.4) - due to SCS 107 trip
1DPPWRB (DPA POWER B): yellow warning. Min: 7.46 (lower yellow limit: 18.2) - due to SCS 107 trip trip

HKBBIASLEAKI (HK B bias leakage current): yellow warning. Max: 0.55 (upper yellow limit: 0.5)
TEPHIN (EPHIN SENSOR HOUSING TEMP): yellow warning. Max: 300.55 (upper yellow limit: 300.2)
5EPHINT (EPHIN TEMP): yellow warning. Max: 300.25 (upper yellow limit: 300.0)
OOBTHR56 (RT 158: TFTE AFT CYLINDER): yellow warning. Max: 288.74 (upper yellow limit: 288.6)

The following are new computed msids, limits may need adjustment
HRMARANGE (HRMA TOTAL TEMP RANGE): yellow warning. Max: 3.27 (upper yellow limit: 2.0)
TFTERANGE (TFTE VENT/RAD TEMP): yellow warning. Max: 28.08 (upper yellow limit: 27.7)

IRUs

• Gyro Bias Drift
• Gyro Bias Drift Histogram

Recent Observations

All data reported below are based on manual processing. "Prob" means that there was probably bad time data included in the manual runs.

Trending

Trends last reported on Jan 17.

• ACIS Thermal Control

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
1CBAT	2.108e+02	0.000e+00	0.000e+00	0.000e+00	K	CAMERA BODY TEMP. A
1CBBT	2.133e+02	0.000e+00	0.000e+00	0.000e+00	K	CAMERA BODY TEMP. B
1CRAT	1.455e+02	6.704e-01	2.175e-01	7.200e-01	K	COLD RADIATOR TEMP. A
1CRBT	1.457e+02	1.089e+00	5.124e-01	-2.444e+00	K	COLD RADIATOR TEMP. B
1DACTBT	2.566e+02	1.345e+00	7.462e-02	1.763e+00	K	DA COLLIMATOR TEMP. B
1DEAMZT	2.814e+02	1.604e+00	2.650e-01	4.891e+00	K	DEA -Z PANEL TEMP
1DPAMYT	2.824e+02	2.134e+00	7.359e-01	7.981e+00	K	DPA -Y PANEL TEMP
1DPAMZT	2.860e+02	1.732e+00	5.456e-01	7.097e+00	K	DPA -Z PANEL TEMP
1OAHAT	2.436e+02	8.995e-01	5.146e-02	1.391e+00	K	OPEN ACTUATOR HOUSING TEMP. A
1OAHBT	2.404e+02	6.119e-01	-5.088e-02	2.801e+00	K	OPEN ACTUATOR HOUSING TEMP. B
1PDEAAT	3.014e+02	6.391e+00	2.231e-01	2.825e+01	K	PSMC DEA PS A TEMP
1PDEABT	2.923e+02	5.752e+00	5.097e-01	2.059e+01	K	PSMC DEA PS B TEMP
1PIN1AT	2.870e+02	5.117e+00	6.162e-01	2.220e+01	K	PSMC TEMP 1A
1WRAT	1.911e+02	4.768e-02	-1.841e-03	0.000e+00	K	WARM RADIATOR TEMP. A
1WRBT	1.911e+02	1.977e-01	-2.403e-03	-1.859e-02	K	WARM RADIATOR TEMP. B

• ACIS Electronics A

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
1DAHACU	0.000e+00	0.000e+00	0.000e+00	0.000e+00	AMP	DA HEATER CURRENT A
1DAHAVO	0.000e+00	0.000e+00	0.000e+00	0.000e+00	V	DETECTOR ASSY. HTR VOLTAGE A
1DAHHAVO	0.000e+00	0.000e+00	0.000e+00	0.000e+00	V	DA HOUSING HTR +28V INPUT A
1DE28AVO	2.934e+01	4.527e-01	-1.189e+00	-2.106e+00	V	DEA +28V INPUT A
1DEICACU	1.454e+00	4.371e-01	3.196e-02	1.240e+00	AMP	DEA INPUT CURRENT A
1DEN0AVO	-6.316e+00	1.153e-01	6.155e-04	-3.429e-01	V	DEA -6V VOLTAGE A
1DEN1AVO	-1.592e+01	3.821e-01	4.736e-03	-7.512e-01	V	DEA -15V VOLTAGE A
1DEP0AVO	6.171e+00	5.038e-02	2.352e-04	3.576e-02	V	DEA +6V VOLTAGE A
1DEP1AVO	1.588e+01	3.572e-01	-2.248e-03	7.186e-01	V	DEA +15V ANALOG A
1DEP2AVO	2.508e+01	1.227e-01	-9.803e-02	3.545e-01	V	DEA +24V ANALOG A
1DEP3AVO	3.053e+01	1.034e-01	4.274e-02	3.638e-01	V	DEA +28V ANALOG A
1DP28AVO	2.937e+01	4.513e-01	-1.188e+00	-2.065e+00	V	DPA +28V INPUT A
1DPICACU	1.296e+00	2.979e-01	8.611e-02	1.254e+00	AMP	DPA INPUT CURRENT A
1DPP0AVO	5.280e+00	4.125e-02	3.648e-03	3.626e-02	V	DPA +5V ANALOG A

• ACIS Electronics B

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
1DAHBCU	5.581e-01	2.666e-02	-1.522e-02	0.000e+00	AMP	DA HEATER CURRENT B
1DAHBVO	7.772e+00	4.172e-01	-2.123e-01	-2.162e+00	V	DA HEATER VOLTAGE B
1DAHHBVO	2.908e+01	4.359e-01	-1.174e+00	-8.467e-01	V	DA HOUSING HEATER INPUT VOLTAGE B
1DE28BVO	2.963e+01	4.356e-01	-1.176e+00	-1.331e+00	V	DEA +28V INPUT B
1DEICBCU	1.639e+01	2.273e-02	-1.474e-03	0.000e+00	AMP	DEA INPUT CURRENT B
1DEN0BVO	-1.651e-01	1.628e-02	-1.527e-03	0.000e+00	V	DEA -6V VOLTAGE B
1DEN1BVO	-3.751e-01	4.758e-02	-2.780e-03	-1.204e-02	V	DEA -15V VOLTAGE B
1DEP0BVO	7.006e-02	1.819e-02	1.175e-03	0.000e+00	V	DEA +6V VOLTAGE B
1DEP1BVO	1.817e-01	4.564e-02	3.786e-03	2.356e-02	V	DEA +15V ANALOG B
1DEP2BVO	2.762e-01	6.963e-02	5.323e-03	2.025e-01	V	DEA +24V ANALOG B
1DEP3BVO	3.432e-01	9.540e-02	1.025e-02	4.405e-01	V	DEA +28V ANALOG B
1DP28BVO	2.965e+01	4.339e-01	-1.172e+00	-1.530e+00	V	DPA +28V INPUT B
1DPICBCU	1.101e+00	2.810e-01	7.653e-02	1.088e+00	AMP	DPA INPUT CURRENT B
1DPP0BVO	5.253e+00	4.312e-02	5.588e-03	3.623e-02	V	DPA +5V ANALOG B

• ACIS Mechanism Controller

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
1HOPRAPR	-2.817e+00	3.875e-04	1.062e-04	0.000e+00	Torr	DIFFERENTIAL HOUSING PRESSURE A
1HOPRBPR	-2.546e+00	0.000e+00	0.000e+00	0.000e+00	Torr	DIFFERENTIAL HOUSING PRESSURE B