MTA Monitoring Report 05/31/02 - 06/06/02

Archive of monthly reports

Commanding Issue

• 6/4 Uplink of TOO replan load did not occur as planned. Targeted for slots 128, 129, and 130., The first two loaded properly but the load in slot 130 failed. This is not an immediate problem since the successful portion will support operations for several days,
• 6/5 The 3rd load segment uplinked produced an invalid command count and a memload reject. It turned out that the command system had selected a command load which was in the archive, but with the same name as the selected command load. This was resolved during the next pass (156:0455) by re-naming two load segments, clearing the slots and uplinking the re-named loads.
• 6/6 Look at command delog shows that the uplink which was rejected (CL158:0604.cld) was a combination of the complete second version of the command load plus a part of the first version of the command load of the same name. The second version happened to be shorter and for some reason the remainder of the first version was tagged onto the first, thereby causing the errors seen.
• Other command load with same name as archived command load happened to be longer than the earlier version - so there were no errors.
• GOT working the issue as to how this happened.

Radiation

Quiet

Detrended CTI

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

Average of ACIS-I CCDs (MnKa) slope 1.055e-8 CTI/day
Detrended slope 9.990e-9 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) (232-246,313) (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							(1022,775)

ACIS Focal Plane Temperature

Day (DOY)	Temp (C)	Width (Days)
153.34	-115.83	0.27
155.94	-117.45	0.15

SIM Movements

Telemetry

TB1T1 (BATT 1 TEMP 1): yellow warning. Min: 270.09 (lower yellow limit: 270.20)
HETG Retraction

FAMTRTEMP (FA Moter Temperature): yellow warning. Max: 283.2 (upper yellow limit: 282.0)
TB1T1 (BATT 1 TEMP 1): yellow warning. Min: 270.09 (lower yellow limit: 270.20)
HETG Insersion
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)
FAMTRTEMP (FA Moter Temperature): yellow warning. Max: 283.2 (upper yellow limit: 282.0)
TEPHIN (EPHIN SENSOR HOUSING TEMP): yellow warning. Max: 283.2 (upper yellow limit: 282.0)
OOBTHR56 (RT 158: TFTE AFT CYLINDER): yellow warning. Max: 288.65(upper yellow limit: 288.6)

TPZLGABM (+Z LOW-GAIN ANTENNA BOOM TEMP): yellow warning. Min: 207.85 (lower yellow limit: 208.0)

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)
LETG Insertion

TPZLGABM (+Z LOW-GAIN ANTENNA BOOM TEMP): yellow warning. Min: 207.85 (lower yellow limit: 208.0)
LETG Retraction
HETG Insertion

OOBTHR56 (RT 158: TFTE AFT CYLINDER): yellow warning. Max: 288.65(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 Mar 21.
Only the most interesting or representative msids are shown below. For a full listing choose the bulletted links.

• HRMA Thermal



MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4RT561T	2.937e+02	1.132e-01	-5.713e-02	1.582e-01	K	RT 561 - HRMA TEMP
4RT563T	2.951e+02	4.269e-02	-3.834e-02	2.726e-02	K	RT 563 - HRMA TEMP
4RT568T	2.861e+02	1.477e-01	5.177e-02	-2.813e-01	K	RT 568 - HRMA TEMP
4RT575T	2.854e+02	2.312e-01	1.520e-01	-4.673e-01	K	RT 575 - OB CONE TEMP
4RT577T	2.841e+02	2.869e-01	1.036e-01	-3.201e-01	K	RT 577 - OB CONE TEMP
4RT578T	2.838e+02	1.598e-01	2.295e-03	-2.260e-01	K	RT 578 - OB CONE TEMP
4RT579T	2.834e+02	1.871e-01	-6.224e-02	8.391e-02	K	RT 579 - OB CONE TEMP
4RT580T	2.833e+02	2.797e-01	-1.984e-02	3.056e-01	K	RT 580 - OB CONE TEMP
4RT581T	2.841e+02	7.635e-01	2.250e-02	-1.350e+00	K	RT 581 - OB CONE TEMP



• HRMA Strut Temperatures



MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4RT583T	2.862e+02	9.810e-02	6.486e-02	-9.106e-02	K	RT 583 - STRUT TEMP
4RT584T	2.876e+02	2.455e-01	1.910e-01	-5.195e-01	K	RT 584 - STRUT TEMP
4RT585T	2.879e+02	2.550e-01	1.938e-01	-5.378e-01	K	RT 585 - STRUT TEMP
4RT586T	2.867e+02	9.336e-02	4.436e-02	-2.155e-01	K	RT 586 - STRUT TEMP
4RT587T	2.851e+02	1.164e-01	1.256e-02	-8.722e-02	K	RT 587 - STRUT TEMP
4RT590T	2.846e+02	1.042e+00	7.155e-01	-2.744e+00	K	RT 590 - STRUT TEMP
4RT591T	2.851e+02	1.092e+00	7.258e-01	-2.844e+00	K	RT 591 - STRUT TEMP
4RT594T	2.874e+02	3.507e-02	1.602e-02	-4.345e-03	K	RT 594 - TFTE TEMP
4RT595T	2.829e+02	1.392e-01	9.085e-02	-2.400e-01	K	RT 595 - TFTE TEMP
4RT596T	2.807e+02	1.365e-01	1.891e-02	-1.351e-02	K	RT 596 - TFTE TEMP
4RT597T	2.846e+02	5.408e-01	3.932e-01	-9.694e-01	K	RT 597 - TFTE TEMP
4RT598T	2.843e+02	5.902e-01	4.475e-01	-1.127e+00	K	RT 598 - TFTE TEMP



• OB FWD Bulkhead Temperatures



MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4RT700T	2.858e+02	2.640e-01	1.671e-01	-4.199e-01	K	RT 700 - OB BULKHEAD TEMP
4RT701T	2.846e+02	1.984e-01	1.313e-01	-2.964e-01	K	RT 701 - OB BULKHEAD TEMP
4RT702T	2.845e+02	1.875e-01	1.199e-01	-5.241e-01	K	RT 702 - OB BULKHEAD TEMP
4RT703T	2.842e+02	1.280e-01	6.869e-02	-6.670e-02	K	RT 703 - OB BULKHEAD TEMP
4RT704T	2.843e+02	1.272e-01	4.914e-02	-1.693e-02	K	RT 704 - OB BULKHEAD TEMP
4RT708T	2.829e+02	1.086e-01	4.690e-02	-8.900e-02	K	RT 708 - OB BULKHEAD TEMP
4RT709T	2.841e+02	1.457e-01	8.139e-02	-3.218e-01	K	RT 709 - OB BULKHEAD TEMP
4RT710T	2.846e+02	2.027e-01	1.327e-01	-3.029e-01	K	RT 710 - OB BULKHEAD TEMP
4RT711T	2.847e+02	2.004e-01	1.195e-01	-4.716e-01	K	RT 711 - OB BULKHEAD TEMP



• Pre Collimator Temperatures



MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4PRT1AT	2.124e+02	5.144e-01	7.488e-02	-1.078e+00	K	IP A: PRE-COLLIMATOR PRT 1 TEMPERATURE
4PRT2AT	2.112e+02	5.189e-01	5.730e-02	-9.177e-01	K	IP A: PRE-COLLIMATOR PRT 2 TEMPERATURE
4PRT3AT	2.579e+02	2.079e-01	2.163e-02	-1.506e-02	K	IP A: PRE-COLLIMATOR PRT 3 TEMPERATURE
4PRT4AT	2.148e+02	4.962e-01	1.036e-01	-1.064e+00	K	IP A: PRE-COLLIMATOR PRT 4 TEMPERATURE
4PRT4BT	1.476e+02	8.528e-02	9.373e-02	-8.157e-02	K	IP B: PRE-COLLIMATOR PRT 4 TEMPERATURE
4PRT5AT	2.084e+02	5.934e-01	8.199e-02	-1.225e+00	K	IP A: PRE-COLLIMATOR PRT 5 TEMPERATURE