The initial indications from the investigation into the day 024 bright star hold are that errors in our gyro scale factor calibration and stellar aberration caused the safing action. There is approximately 150 arcsec worth of attitude error at the current attitude. This was sufficient to cause us not to acquire the obc star catalog stars with 120 arcsec search boxes. There is no indication of any bias shift during the maneuver and all other gyro parameters look normal. (from Dan Shropshire's email).
Quiet this week.
Average of ACIS-I CCDs (MnKa) slope 1.208e-8 CTI/day
Detrended slope 1.145e-8 CTI/day
ACIS Warm pixel report will return next week.
| Day (DOY) | Temp (C) | Width (Days) | |
|---|---|---|---|
| 18.18 | -118.58 | 0.52 | |
| 20.93 | -118.25 | 0.38 | a wide shoulder on the left |
| 23.53 | -115.35 | 0.32 |
01/18-01/24: following msids issued warnings everyday.
| OBSID | DETECTOR | GRATING | TARGET | ANALYSIS | ACA | 3400 | ACIS-S | HETG | XTEJ1650-500 | OK /NOT AVIL | NOT AVIL | 3383 | HRC-S | LETG | NGC5548 | OK /NOT AVIL | NOT AVIL | 3045 | HRC-S | LETG | NGC554 | OK /NOT AVIL | NOT AVIL |
|---|
No significant changes since last reported
( 11/02/01- 11/08/01 weekly).
Interesting trends are indicated with "*".
| MSID | DESCRIPTION | COMMENT |
|---|---|---|
| IMHBLV | Imaging bot and top MCP HV monitor | around 105 and 126 |
| IMHVLV | Imaging bot MCP HV monitor | around 99 and 126 |
| RSRFALV | Range switch setting | around 185/189 |
| SPHBLV | Spect bot and top MCP HV monitor | around 105 and 127 |
| SPHVLV | SPECTROSCOPY LOWER MCP HV MONITOR | around 100 and 126 |
| CALPALV | Cal pulser amplitude | flat @ 127 |
| LLDIALV | Lower level disc setting | flat @ 131 |
| S1HVLV | Shield PMT 1 HV monitor | flat @ 127 |
| S2HVLV | Shield PMT 2 HV monitor | scattered between 80 and 130, more around 130 |
| 2DETART | DETECTOR EVENT RATE A | flat @ 255 |
| 2DETBRT | DETECTOR EVENT RATE B | flat @ 3.9 in log scale |
| CBHUAST | CENTER BLANK HIGH CP | around 70 and 250 |
| CBHVAST | CENTER BLANK HIGH CP | flat @255 |
| CBLUAST | CENTER BLANK LOW CP | around 0 and 70 |
| CBLVAST | CENTER BLANK LOW CP | flat @ 0.0 |
| FCPUAST | FORCED COARSE POSITION U AXIS | flat @ 0.0 |
| FCPVAST | FORCED COARSE POSITION V AXIS | flat @ 0.0 |
| HVPSSTAT | HVPS Status | around 90 and 205, more at 205 |
| IMBPAST | IMAGING DET BOTTOM PLATE HV | around 0 and 58, more at 0 |
| IMTPAST | IMAGING DET TOP PLATE HV | around 0 and 40, more at 0 |
| MLSWENBL | Motor Limit Switch Enable | around 18/19/20, with upward scatter to 30 |
| MLSWSTAT | Motor Limit Switch Status | @ 0.0 |
| MTRCMNDR | Motor Command Register | around 9/17/33, mostly 17 |
| MTRITMP | Motor Over-current/Temp | around 4 and 6 |
| MTRSELCT | Selected Motor | @ 1.0 |
| MTRSTATR | Motor Status Register | around 0.0 |
| N15CAST | -15V LVPS on/off | flat @ 1.0 |
| P15CAST | +15V LVPS on/off | flat @ 1.0 |
| P24CAST | +24V LVPS on/off | flat @ 1.0 |
| S1HVST | SHIELD A HVPS SETTING | flat @ 0.0 |
| S2HVST | SHIELD B HVPS SETTING | scattered between 0 and 8, more around 0 after DOM 600 |
| SCIDPREN | Science Processor Enables | mainly around 7.0, scattered down to 5.0 |
| SCTHAST | STEP CTR LAST VALUE | @ 4.0 in log scale |
| SPBPAST | SPECTROSCOPY DET TOP PLATE HV | around 0 and 58 |
| SPTPAST | SPECTROSCOPY DET TOP PLATE HV | around 0 and 45 |
| WDTHAST | WIDTH THRESHOLD SETTING | @ 2.0 after DOM 450 |
| MSID | DESCRIPTION | COMMENT |
|---|---|---|
| *2CEAHVPT | CEA RADIATOR TEMPERATURE AT CENTER | scattered between 290 and 298, slight upward trend |
| *2CHTRPZT | CENTRAL ELECTRONICS BOX TEMP | scattered between 287 and 294, slight upward trend |
| *2CONDMXT | CONDUIT -X FACE TEMPERATURE | scattered between 283 and 288, slight upward trend |
| *2CONDMXT | CONDUIT -X FACE TEMPERATURE | scattered between 283 and 289, slight upward trend |
| *2DCENTRT | DETECTOR HOUSING TEMP 2 | scattered between 284 and 288, slight upward trend |
| *2DTSTATT | DETECTOR HOUSING TEMP 1 | scattered between 284 and 290, slight upward trend |
| *2FHTRMZT | FRONT END ELECTRONICS BOX TEMPERATURE | scattered between 292 and 290, slightly upward trend |
| *2FRADPYT | FRONT END ASSEMBLY +Y AT RAD CTR TEMP | scattered between 287 and 286, slightly upward trend |
| *2PMT1T | PMT 1 TEMPERATURE | scattered between 284 and 290, slight upward trend |
| *2PMT2T | PMT 2 TEMPERATURE | scattered between 284 and 292, slight downward trend |
| *2UVLSPXT | UV LIGHT SHIELD NEXT TO SNOUT TEMP | scattered between 280 and 288, slight upward trend |
| MSID | DESCRIPTION | COMMENT |
|---|---|---|
| SHEVART | SHIELD EVENTS | scattered around 3.5 in log scale |
| TLEVART | TOTAL EVENTS | @ 0.0, max 200 |
| VLEVART | VALID EVENTS | @ 0.0, max 80 |
| MSID | DESCRIPTION | COMMENT |
|---|---|---|
| C05PALV | +5V bus monitor | @ 4.92 |
| C15NALV | -15V bus monitor | @ -15.0 |
| C15PALV | +15V bus monitor> | @ 14.84 |
| C24PALV | +24V bus monitor | @ 23.91 |
| *FE00ATM | Front end temperature | scattered between 13 and 19, upward trend |
| *FEPRATM | FE temp card temperature | scattered between 16 and 21, upward trend |
| *IMHVATM | Imaging det HVPS temperature | scattered between 24 and 30, slight upward trend |
| *IMINATM | Imaging det temperature | scattered between 11 and 16, slight upward trend |
| *LVPLATM | LVPS plate temperature | scattered between 20 and 25, slight upward trend |
| PRBSCR | Primary bus current | around 1.61 to 1.65, mostly 1.65 |
| *PRBSVL | Primary bus voltage | annual cycle, min 28.5, max 30, overall trend is slightly downward; almost at the bottom |
| *SMTRATM | Selected motor temperature | scattered around 5.9, downward trend after DOM 600 |
| *SPHVATM | Spect det HVPS temperature | scattered between 24 and 32, slightly upward trend |
| *SPINATM | Spect det temperature | scattered between 11 and 18, slightly upward trend |