MTA Monitoring Report 3/23/01 - 03/29/01

Archive of Monthly reports

Radiation

A few warnings were issued on 3/27/01.The maximum value reported was:

• ACIS fluence = 1.08e+09p/(cm^2-sr-MeV)
  
• ACIS proton flux = 5.40e+04 p/(cm^2-s-sr-MeV).
  

CTI Trend

Average of ACIS-I CCDs (MnKa) slope 1.817e-8 CTI/day
Detrended slope 1.348e-8 CTI/day

Both slopes are getting flattened through the last few weeks.

ACIS Focal Temperature

       Day (DOY)       Temp (C)        Width (DAY)
       -------------------------------------------
	84.55		-109.7		0.47
	87.18		-112.6		0.37

MTA Problem Tracking

No new or reopened problems were reported in this period

Following msids are still coming
ES2P5CV, 1DPDBBON, ES1P5CV

SIM Movements

Telemetry

During 3/23-24 period, TPZLGABM (+Z LOW-GAIN ANTENNA BOOM TEMP) triggered lower yellow warnings (min: 207.85 for an yellow lower limit of 208)

On 3/29, a few sim and spacecraft temperature msids triggered warnings:

• 3RCTUBPT (RCTU BASEPLATE (+X) ABORTHTR TSC2 TEMP) hit an yellow warning with the max of 276.72 (an upper yellow limit: 276.5)
  
• BOXTEMP (SEA Box Temperature) hit an yellow warning with the max of 292.15 (an upper yellow limit: 292)
• TSCIUSF1 (SC-IUS FITTING-1 TEMP) hit a red warning with the max of 352.84 (an upper red limit: 349.7)
• TSCIUSF8 (SC-IUS FITTING-8 TEMP) hit a red warning with the max of 351.27 (an upper red limit: 349.7)

Recent Observations

Trending

• The following msids exhibit the most significant scatter and/or obvious trends

  MSID            DESCRIPTION                    		COMMENTS
  
  1MAHOATC        DOOR OPEN ACTUATOR TEMP A		slight downward trend due to a break at DOM 450
  1MAHOBTC        DOOR OPEN ACTUATOR TEMP B		downward trend due to a break at DOM 450
  1OAHATC		OPEN ACTUATOR HOUSING TEMP A	        scattered between -30.5 and -28.5, slight upward trend
  1WRATC		WARM RADIATOR TEMP. A		        scattered between -82.2 and -81.80, scatter slightly widen with time
  FWBLKHDT        FORWARD BULKHEAD TEMP			slight upward trend between 283.3 and 283.6
  HRMAAVG  	AVG OF HRMA TEMP METRICS	        around 307, scattering width is around 0.1
  

  ---

• The following msids exhibit all COMP

  MSID		DESCRIPTION				COMMENTS
  
  Acis Electronics
  ----------------
  
  1DPPWRA         DPA POWER A                             scattered between 40.2 and 41.6
  1DPPWRB         DPA POWER B                             scattered between 34.6 and 36.0
  
  Acis Thermal
  -----------
  
  1CBATC          CAMERA BODY TEMP. A                     scattered between -62.6 and -62.35
  1CBBTC          CAMERA BODY TEMP. B                     scattered between -60.1 and -59.9
  1CRATC          COLD RADIATOR TEMP. A                   scattered between -128. and -126.5
  1CRBTC          COLD RADIATOR TEMP. B                   scattered between -128. and -125.5
  1DACTBTC        DA COLLIMATOR TEMP. B                   scattered between -18 and -15
  1DEAMZTC        DEA -Z PANEL TEMP                       scattered between 6 and 10
  1DPAMYTC        DPA -Y PANEL TEMP                       scattered between 8 and 11
  1DPAMZTC        DPA -Z PANEL TEMP                       scattered between 12 and 14
  1MAHCATC        DOOR CLOSE ACTUATOR TEMP A              scattered between 440.4 and 441.4
  1MAHCBTC        DOOR CLOSE ACTUATOR TEMP B              scattered between 440.3 and 441.0
  1MAHOATC        DOOR OPEN ACTUATOR TEMP A               slight downward trend due to a break at DOM 450
  1MAHOBTC        DOOR OPEN ACTUATOR TEMP B               downward trend due to a break at DOM 450
  1OAHATC         OPEN ACTUATOR HOUSING TEMP A            scattered between -30.5 and -28.5, slight upward trend
  1OAHBTC         OPEN ACTUATOR HOUSING TEMP B            scattered between -33.2 and -32.2
  1PDEAATC        PSMC DEA PS A TEMP                      scattered between 24 and 34
  1PDEABTC        PSMC DEA PS B TEMP                      scattered between 16 and 24
  1PIN1ATC        PSMC TEMP 1A                            scattered between 11 and 17
  1WRATC          WARM RADIATOR TEMP. A                   scattered between -82.2 and -81.80, scatter slightly widen with time
  1WRBTC          WARM RADIATOR TEMP. B                   scattered between -82.3 and -81.90
  
  Ephin Key Rates L1:
  -------------------
  
  SCE150L1        Sci single detector counter E150,       scattered between 0 and 10**6
  SCE3000L1       Sci single detector counter E3000,      mainly around 0, but scattered upward of 4
  SCE300L1        Sci single detector counter E300,       scattered between 0 and 10**4
  SCINITL1        Sci single detector counter INT,        mainly around 0.2, but scattered upward of 0.60
  
  SIM Thermal Side B
  ------------------
  
  FLEXADIF        DIFF FLEX A & SET POINT                 scattered between 63 and 69
  FLEXBDIF        DIFF FLEX B & SET POINT                 scattered between 57 and 62
  FLEXCDIF        DIFF FLEX C & SET POINT                 scattered between 65 and 85
  
  HRMA Gradients
  --------------
  
  AFTBLKHDT       AFT BULKHEAD TEMP                       scattered between 283 and 384.5
  FWBLKHDT        FORWARD BULKHEAD TEMP                   slight upward trend between 283.3 and 283.6
  HRMAAVG         AVG OF HRMA TEMP METRICS                around 307, scattering width is around 0.1
  HRMACAV         HRMA CAVITY AVG TEMP                    ~294.13
  HRMAXGRD        HRMA RADIAL GRAD                        @ 0.1
  MZOBACONE       -Z SIDE OBA CONE TEMP                   scattered 283.8 and 285.2
  OBAAXGRD        OBA AXIAL GRAD                          scattered between -1.0 and 0.6
  OBACONEAVG      OBA CONE AVG TEMP                       scattered between 283.5 and 283.90
  PZOBACONE       +Z SIDE OBA CONE TEMP                   flat around 283