PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2001-10-24 NOTE = "MGS RST Instrument Health Report HEA1297A.TXT" END_OBJECT = TEXT END Miscellaneous ============= MGS RS Team meeting #29 was held yesterday at JPL. Minutes from the meeting will be distributed separately. Odyssey successfully entered Mars orbit at about 03:00Z today. Gene Brower has reported more details on the recent Contingency Mode event as follows (slightly edited): The MGS spacecraft entered Contingency Mode 2001-292T04:52:18Z. Symptoms of the spacecraft's slowly drifting off point could be seen in the degradation of the downlink AGC after the spacecraft returned from a ROTO observation at approximately 292/00:40Z. No unusual spacecraft activity (sequences) or uplinks were taking place at the time of entry. Based on the latest available data, this Contingency Mode entry was similar to the Contingency Mode entry of September 6, 2001. On September 6 an uncataloged celestial body seemed to have interfered with STAREX processing following a ROTO. If STAREX misidentifies a star during the period the attitude covariances are widened to aid the bias convergence process following a ROTO, the gyro biases may get corrupted leading to difficulties in determining attitude knowledge and subsequent Contingency Mode entry. Upon Contingency Mode entry the spacecraft enters Sun coning with the Low Gain Antenna at a 10 bps downlink telemetry rate after each occultation. The Contingency Mode recovery process began Friday morning October 19 once the downlink signal from MGS was acquired and Contingency Mode Sun coning was confirmed. Inertial reference was reestablished by the end of the day Friday which confirmed no long term anomalies with STAREX. MGS then established NADIR point and resumed nominal HGA tracking at approximately at 294/00:22Z (Saturday, October 20 at 5:22 PM Pacific). The TES and MOC science instruments were powered on Sunday afternoon October 21. A nominal Back-Ground Sequence was set to begin executing at approximately 01-295/0500Z (Sunday, 10:00 PM Pacific). The MOLA instrument was turned on as part of the Back-Ground Sequence Monday night and MAG/ER instruments will be powered on sometime this next week following the Mars Odyssey MOI activities. Engineering Data ================ Engineering Data Statistical Summary from CSV2STAT: First SCET: 2001-10-22T00:33:42.437 Last SCET: 2001-10-22T23:21:10.425 CHANNL CHANNEL TITLE DN-LO DN-HI EU-LO EU-HI EU-AVG/STDEV RECDS ------ ------------- ----- ----- --------- --------- ---------/-------- ----- F-0190 HGA_AZ_ANG 5321 5368 1.30E+00 1.31E+00 1.30E+00/5.37E-05 1968 F-0195 HGA_EL_ANG -11233 11089 -2.74E+00 2.71E+00 -1.29E-01/3.42E-02 1968 L-0034 MOT1_RANGING 0 0 3936 L-0036 MOT1_TLM_MOD 0 0 3938 L-0037 MOT1_USO_ENA 0 0 3936 L-0044 MOT2_RANGING 1 1 3936 L-0046 MOT2_TLM_MOD 1 1 3938 L-0047 MOT2_USO_ENA 1 1 3936 L-0053 RF_SW_OSC 2 2 3938 L-0060 TWTA1_FILMNT 0 0 3936 L-0061 TWTA1_HV 0 0 3937 L-0070 TWTA2_FILMNT 1 1 3937 L-0071 TWTA2_HV 0 1 3936 L-0080 USO_PWR 0 0 3936 L-0090 KaBLE_STAT 0 0 3936 L-0091 KaBLE_ENABLE 1 1 3937 L-0111 MOT1_RCV_AGC 255 255 -1.53E+02 -1.53E+02 -1.53E+02/0.00E+00 3936 L-0121 MOT2_RCV_AGC 131 255 -1.53E+02 -1.15E+02 -1.37E+02/2.26E-01 3936 L-0131 TWTA1_HLX_I 0 1 -3.84E-02 -1.85E-02 -3.82E-02/2.36E-05 3936 L-0132 TWTA1_ANOD_V 0 1 -1.00E+03 -1.00E+03 -1.00E+03/1.21E-02 493 L-0141 TWTA2_HLX_I 17 43 2.86E-01 8.05E-01 6.59E-01/2.74E-03 3936 L-0142 TWTA2_ANOD_V 61 229 -8.66E+02 -5.30E+02 -7.87E+02/6.18E+00 493 L-0200 USO_REG_V 203 205 4.06E+00 4.10E+00 4.08E+00/2.88E-04 491 L-0201 USO_OVEN_V 128 131 2.56E+00 2.62E+00 2.59E+00/4.81E-04 491 T-0302 EPC1_T 180 192 -2.43E+00 2.50E+00 -7.17E-02/6.50E-02 495 T-0303 EPC2_T 179 191 -2.00E+00 2.90E+00 1.25E+00/5.87E-02 495 T-0310 RF_ISOLTR1_T 228 232 -4.77E+00 -2.48E-02 -2.44E+00/1.32E-02 3938 T-0311 RF_ISOLTR2_T 220 230 -2.31E+00 7.73E+00 3.29E+00/3.85E-02 3938 T-0312 TWT1_T 227 231 -3.52E+00 1.06E+00 -1.18E+00/4.75E-02 494 T-0313 TWT2_T 213 231 -3.52E+00 1.30E+01 6.92E+00/2.05E-01 494 T-0315 USO_T 137 146 2.00E+01 2.26E+01 2.15E+01/2.67E-02 495 T-0316 KA_AMP_T 213 219 8.56E+00 1.30E+01 1.09E+01/3.75E-02 488 L-0200 and L-0201 are nominal. T-0315 has increased 1.1K from yesterday's health report, but remains within nominal specifications. Open Loop Data ============== Data Collection --------------- No new data. Closed Loop Data ================ Data Collection --------------- We have obtained the following files from OSCAR: Original File Name Name on SOPC ------------------------------------ ------------ TROPCAL: ATC01OCT.CSP;21 1274298B.TRO Ancillary Data ============== Data Collection --------------- We have obtained the following files from the FIS: Original File Name Name on SOPC ------------------------------------ ------------ AMD: amdgen.01-297.out 1295296A.AMD SAK: mgs_solar_array_2001-295.ck 1295295A.SAK TCK: mgs_spice_c_kernel_2001-295.ck 1295295A.TCK We have obtained the following files from NAIF: Original File Name Name on SOPC ------------------------------------ ------------ AGK: mgs_hga_ck_2001-10-14.bc 1287287A.AGK