MTA Monitoring Report 08/16/02 - 08/22/02

Archive of monthly reports

Radiation

Due to a full halo CME on 08/16, a radiation violation of P3 (130Kev) has been observed by ACE (observed fluence: 3.7277e+08, limit = fluence of 3.6e8 particles/cm2-ster-MeV) on 08/18, and Chandra science mission was interrupted (14:30 ET). 83.2 ks of science time was lost.

Detrended CTI

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

Average of ACIS-I CCDs (MnKa) slope 1.063e-8 CTI/day
Detrended slope 1.044e-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			(811,637)	(227,467)	(1-3,775-1024) (4,839)(4,846) (4,856) (226,565) (232-246,313) (508,1)(508,6) (509,spurious rows) (510-511,775-1024) (512,775)(513,776-1024) (514,794),(514,862) (514,868),(514,894) (514,915),(514,967) (514,971),(514,976) (515,1)(515,3-5) (515,7-8)(515,15) (515,18-19)(515,548) (607,281)(1022,166)	(360,249)	(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) (1021,485)(1021,578) (1021,581-582)(1021,588) (1022,775)	(62,482) (541,1)	(150,373)
Previously reported - not observed during this period					(514,934)

ACIS Focal Plane Temperature

Day (DOY)	Temp (C)	Width (Days)
230.08	-114.70	0.56
232.73	-116.48	0.55

SIM Movements

Telemetry

No violation

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)
1DPPWRB (DPA POWER B): yellow warning. Min: 8 (lower yellow limit: 18.2)
TSAPYT (+Y WING SOLAR ARRAY TEMP): yellow warning. Min: 304.78 (lower yellow limit: 311.10)
TSAMYT (-Y WING SOLAR ARRAY TEMP): yellow warning. Min: 304.78 (lower yellow limit: 311.10)
EPOVSPR (O/V SENSOR PRI): red warning. Max: 1.0 (upper red limit: 0.9)
LETG Retraction

1DPICACU (DPA INPUT CURRENT A): yellow warning. Min: 0.39 (lower yellow limit: 0.90)
1DPICBCU (DPA INPUT CURRENT B): yellow warning. Min: 0.25 (lower yellow limit: 0.70)
1DPPWRA (DPA POWER A): yellow warning. Min: 11.74 (lower yellow limit: 23.4)
1DPPWRB (DPA POWER B): yellow warning. Min: 7.53 (lower yellow limit: 18.2)
FAMTRTEMP (FA Motor Temperature): yellow warning. Max: 282.6 (upper yellow limit: 282.0)

1CRAT (COLD RADIATOR TEMP. A): yellow warning. Max: 142.83(lower yellow limit: 143.16)
1DPICACU (DPA INPUT CURRENT A): yellow warning. Min: 0.40 (lower yellow limit: 0.90)
1DPICBCU (DPA INPUT CURRENT B): yellow warning. Min: 0.26 (lower yellow limit: 0.70)
1DPPWRA (DPA POWER A): yellow warning. Min: 11.99 (lower yellow limit: 23.4)
1DPPWRB (DPA POWER B): yellow warning. Min: 7.79 (lower yellow limit: 18.2)
HKBBIASLEAKI (HK B bias leakage current): yellow warning. Max: 0.62 (upper yellow limit: 0.50)
TEPHIN (EPHIN SENSOR HOUSING TEMP): yellow warning. Max: 302.09 (upper yellow limit: 300.2)
5EPHINT (EPHIN TEMP): yellow warning. Max: 301.53 (upper yellow limit: 300.0)
FAMTRTEMP (FA Motor Temperature): yellow warning. Max: 282.6 (upper yellow limit: 282.0)
OOBTHR56 (RT 158: TFTE AFT CYLINDER): yellow warning. Max: 288.74 (upper yellow limit: 288.6)

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)
1DPPWRA (DPA POWER A): yellow warning. Min: 12 (lower yellow limit: 23.4)
1DPPWRB (DPA POWER B): yellow warning. Min: 8 (lower yellow limit: 18.2)
HKBBIASLEAKI (HK B bias leakage current): yellow warning. Max: 0.66 (upper yellow limit: 0.50)
TEPHIN (EPHIN SENSOR HOUSING TEMP): yellow warning. Max: 302.09 (upper yellow limit: 300.2)
5EPHINT (EPHIN TEMP): yellow warning. Max: 301.95 (upper yellow limit: 300.0)
OOBTHR56 (RT 158: TFTE AFT CYLINDER): yellow warning. Max: 288.92 (upper yellow limit: 288.6)

HKBBIASLEAKI (HK B bias leakage current): yellow warning. Max: 0.52 (upper yellow limit: 0.50)
FAMTRTEMP (FA Motor Temperature): yellow warning. Max: 284.6 (upper yellow limit: 282.0)
BOXTEMP (SEA Box Temperature ): yellow warning. Max: 286.65 (upper yellow limit: 292.0)
TSCIUSF1 (SC-IUS FITTING-1 TEMP): yellow warning. Max: 349.70 (upper yellow limit: 346.9)
TSCIUSF8 (SC-IUS FITTING-8 TEMP): yellow warning. Max: 348.12 (upper yellow limit: 346.9)
OOBTHR56 (RT 158: TFTE AFT CYLINDER): yellow warning. Max: 288.83 (upper yellow limit: 288.6)

FAMTRTEMP (FA Motor Temperature): red warning. Max: 284.6 (upper red limit: 285.0)
BOXTEMP (SEA Box Temperature ): yellow warning. Max: 293.65 (upper yellow limit: 292.0)
TSCIUSF1 (SC-IUS FITTING-1 TEMP): red warning. Max: 357.55 (upper red limit: 349.7)
TSCIUSF8 (SC-IUS FITTING-8 TEMP): red warning. Max: 355.98 (upper red limit: 349.7)
TFSSBKT1 (FSS BRACKET-1 TEMP (+Y)): yellow warning. Max: 333.98 (upper yellow limit: 333.0)
OOBTHR56 (RT 158: TFTE AFT CYLINDER): yellow warning. Max: 288.83 (upper yellow limit: 288.6)

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 Jun 06.
Only the most interesting or representative msids are shown below. For a full listing choose the bulletted link.

• HRMA Thermal



MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4RT561T	2.937e+02	1.395e-01	-1.034e-01	1.220e-01	K	RT 561 - HRMA TEMP
4RT563T	2.951e+02	4.683e-02	-3.948e-02	7.141e-03	K	RT 563 - HRMA TEMP
4RT568T	2.860e+02	1.552e-01	5.259e-02	-6.354e-02	K	RT 568 - HRMA TEMP
4RT575T	2.853e+02	2.641e-01	1.465e-01	-1.994e-01	K	RT 575 - OB CONE TEMP
4RT577T	2.841e+02	3.069e-01	8.533e-02	2.942e-01	K	RT 577 - OB CONE TEMP
4RT578T	2.838e+02	1.598e-01	-1.875e-02	1.574e-01	K	RT 578 - OB CONE TEMP
4RT579T	2.834e+02	1.885e-01	-5.068e-02	1.561e-02	K	RT 579 - OB CONE TEMP
4RT580T	2.834e+02	2.789e-01	-3.644e-02	8.376e-02	K	RT 580 - OB CONE TEMP
4RT581T	2.841e+02	7.619e-01	6.189e-02	-3.185e-01	K	RT 581 - OB CONE TEMP



• HRMA Strut Temperatures



MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4RT583T	2.862e+02	1.120e-01	7.548e-02	-8.246e-02	K	RT 583 - STRUT TEMP
4RT584T	2.876e+02	2.497e-01	1.711e-01	-1.209e-01	K	RT 584 - STRUT TEMP
4RT585T	2.878e+02	2.664e-01	1.760e-01	-3.945e-02	K	RT 585 - STRUT TEMP
4RT586T	2.867e+02	1.041e-01	4.494e-02	-1.996e-02	K	RT 586 - STRUT TEMP
4RT587T	2.851e+02	1.171e-01	8.328e-03	2.966e-03	K	RT 587 - STRUT TEMP
4RT590T	2.844e+02	1.041e+00	6.534e-01	-1.488e-01	K	RT 590 - STRUT TEMP
4RT591T	2.849e+02	1.109e+00	6.889e-01	-2.092e-01	K	RT 591 - STRUT TEMP
4RT594T	2.874e+02	4.805e-02	2.000e-02	2.451e-02	K	RT 594 - TFTE TEMP
4RT595T	2.828e+02	1.586e-01	1.123e-01	-3.927e-02	K	RT 595 - TFTE TEMP
4RT596T	2.807e+02	1.468e-01	2.440e-02	-1.176e-01	K	RT 596 - TFTE TEMP
4RT597T	2.845e+02	5.838e-01	3.835e-01	-3.351e-01	K	RT 597 - TFTE TEMP
4RT598T	2.842e+02	6.512e-01	4.267e-01	-3.623e-02	K	RT 598 - TFTE TEMP



• OB FWD Bulkhead Temperatures



MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4RT700T	2.858e+02	2.972e-01	1.659e-01	-1.310e-01	K	RT 700 - OB BULKHEAD TEMP
4RT701T	2.846e+02	2.119e-01	1.192e-01	5.430e-02	K	RT 701 - OB BULKHEAD TEMP
4RT702T	2.845e+02	1.980e-01	1.106e-01	-3.573e-02	K	RT 702 - OB BULKHEAD TEMP
4RT703T	2.842e+02	1.350e-01	5.595e-02	2.944e-02	K	RT 703 - OB BULKHEAD TEMP
4RT704T	2.843e+02	1.263e-01	4.275e-02	1.624e-02	K	RT 704 - OB BULKHEAD TEMP
4RT708T	2.829e+02	1.274e-01	5.957e-02	-1.334e-01	K	RT 708 - OB BULKHEAD TEMP
4RT709T	2.841e+02	1.674e-01	9.798e-02	7.723e-03	K	RT 709 - OB BULKHEAD TEMP
4RT710T	2.846e+02	2.193e-01	1.161e-01	4.989e-02	K	RT 710 - OB BULKHEAD TEMP
4RT711T	2.847e+02	2.151e-01	1.231e-01	4.993e-03	K	RT 711 - OB BULKHEAD TEMP



• P re Collimator Temperatures



MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4PRT1AT	2.124e+02	5.505e-01	6.836e-02	4.706e-02	K	IP A: PRE-COLLIMATOR PRT 1 TEMPERATURE
4PRT2AT	2.112e+02	5.495e-01	6.132e-02	-1.223e-01	K	IP A: PRE-COLLIMATOR PRT 2 TEMPERATURE
4PRT3AT	2.579e+02	2.097e-01	1.920e-02	8.657e-02	K	IP A: PRE-COLLIMATOR PRT 3 TEMPERATURE
4PRT4AT	2.148e+02	5.363e-01	1.044e-01	-8.308e-02	K	IP A: PRE-COLLIMATOR PRT 4 TEMPERATURE
4PRT4BT	1.476e+02	9.900e-02	8.340e-02	9.880e-02	K	IP B: PRE-COLLIMATOR PRT 4 TEMPERATURE
4PRT5AT	2.084e+02	6.299e-01	7.602e-02	6.497e-02	K	IP A: PRE-COLLIMATOR PRT 5 TEMPERATURE