PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2001-05-02 NOTE = "MGS RST Instrument Health Report HEA1122A.TXT" END_OBJECT = TEXT END Errata ====== Occultations 9596i and 9597i (DSS 65, start times 2001/121-05:11:00 and 07:08:00) were described in yesterday's report (HEA1121A.TXT) as "not found." The station had rebooted the DSP prior to 9596i and, although the DSP came up, the SPC server did not so the data were lost. The reason for the reboot is not known. The SPC server failure was not noticed until both 9597i and 9598i had been lost. Data from occultation 9387i (DSS 65, start time 2001/104-02:58:00) were previously characterized as "lost" (HEA1106A.TXT) because the sample stream ended at 03:02:53 -- before the expected ingress. Aseel Anabtawi has been able to get the data retransmitted (using different start/stop times) and we have now been able to query as late as 03:04:45. This is an adequate margin for observing the ingress, so these data can now be described as "recovered." The new data appear in our collection under the file name 1104025I.ODR. The original file 11040258.ODR remains in our collection, but it should not be used. Miscellaneous ============= Open loop data were collected using the Radio Science Receiver for the first time earlier today. Aseel Anabtawi reports: I'm pleased to report that today for the first time, we successfully collected RSR (Radio Science Receiver) occultation data in parallel with DSP data. This occurred over the DSS 65 pass BOT 121/2250 EOT 122/0345. There were two measurements scheduled over this pass (9606i and 9607i). The system to query MGS RSR data won't be available until late July, so until we have that capability, we'll have to ftp the data from the station and forward it to Stanford. The two RSR data files from today's run have already been forwarded. We do not plan on completely switching to the RSR before the >occultations hiatus (which begin in July), but until then, we will continue to train and provide Stanford with RSR data as needed. The spacecraft entered Contingency Mode sometime before occultation 9611i (DSS 25, start time 2001/122-10:37:00). We can see a very weak carrier but the signal is much too weak for occultation analysis. Occultations 9612i and 9613i at DSS 45 were lost, but then coverage was switched to DSS 43 and Aseel says recovery is in progress. According to Peggy Jester, there has been no determination of the cause. From the latest available data, all subsystems (thermal, power, etc.) are nominal for being in Contingency Mode. Engineering Data ================ Engineering Data Statistical Summary from CSV2STAT: First SCET: 2001-04-30T00:00:00.597 Last SCET: 2001-04-30T17:35:40.588 CHANNL CHANNEL TITLE DN-LO DN-HI EU-LO EU-HI EU-AVG/STDEV RECDS ------ ------------- ----- ----- --------- --------- ---------/-------- ----- F-0190 HGA_AZ_ANG 6424 12016 1.57E+00 2.93E+00 2.69E+00/1.07E-02 1946 F-0195 HGA_EL_ANG -11233 11088 -2.74E+00 2.71E+00 -4.80E-01/4.12E-02 1946 L-0034 MOT1_RANGING 0 0 3899 L-0036 MOT1_TLM_MOD 0 0 3901 L-0037 MOT1_USO_ENA 0 0 3899 L-0044 MOT2_RANGING 1 1 3899 L-0046 MOT2_TLM_MOD 0 1 3901 L-0047 MOT2_USO_ENA 1 1 3899 L-0053 RF_SW_OSC 2 2 3901 L-0060 TWTA1_FILMNT 0 0 3899 L-0061 TWTA1_HV 0 0 3898 L-0070 TWTA2_FILMNT 0 1 3898 L-0071 TWTA2_HV 0 1 3899 L-0080 USO_PWR 0 0 3899 L-0090 KaBLE_STAT 0 0 3899 L-0091 KaBLE_ENABLE 1 1 3898 L-0111 MOT1_RCV_AGC 255 255 -1.53E+02 -1.53E+02 -1.53E+02/0.00E+00 3899 L-0121 MOT2_RCV_AGC 132 255 -1.53E+02 -1.16E+02 -1.42E+02/2.50E-01 3899 L-0131 TWTA1_HLX_I 0 1 -3.84E-02 -1.85E-02 -3.83E-02/2.21E-05 3899 L-0132 TWTA1_ANOD_V 0 1 -1.00E+03 -1.00E+03 -1.00E+03/1.62E-02 487 L-0141 TWTA2_HLX_I 18 42 3.06E-01 7.85E-01 5.15E-01/3.21E-03 3899 L-0142 TWTA2_ANOD_V 61 228 -8.66E+02 -5.32E+02 -6.74E+02/7.37E+00 487 L-0200 USO_REG_V 203 205 4.06E+00 4.10E+00 4.08E+00/2.78E-04 487 L-0201 USO_OVEN_V 129 132 2.58E+00 2.64E+00 2.60E+00/2.83E-04 487 T-0302 EPC1_T 188 195 -3.74E+00 -7.38E-01 -2.45E+00/3.30E-02 487 T-0303 EPC2_T 182 192 -2.43E+00 1.71E+00 -5.97E-01/5.87E-02 487 T-0310 RF_ISOLTR1_T 230 233 -6.05E+00 -2.31E+00 -3.50E+00/8.89E-03 3901 T-0311 RF_ISOLTR2_T 224 232 -4.77E+00 4.11E+00 -6.86E-01/2.69E-02 3901 T-0312 TWT1_T 228 232 -4.77E+00 -2.48E-02 -2.33E+00/3.31E-02 487 T-0313 TWT2_T 219 232 -4.77E+00 8.56E+00 1.01E+00/1.93E-01 487 T-0315 USO_T 136 139 2.20E+01 2.29E+01 2.26E+01/8.86E-03 487 T-0316 KA_AMP_T 215 220 7.73E+00 1.16E+01 9.98E+00/2.85E-02 488 L-0200, L-0201, and T-0315 are nominal. Open Loop Data ============== Data Collection --------------- We have transferred the following open loop data to Stanford: YYYY/DDD DSS DSP SAMP BW DSP BIT REC RECS RECS MAX START STOP RATE MODE RESN LEN MSSG SNR -------- --- -------- -------- ---- ---- ---- ---- ---- ----- ---- ----- 2001/104 65 02:58:00 03:04:45 5000 2000 2 12 1666 2026 0 55.8 2001/121 43 14:59:00 15:06:00 5000 2000 2 12 1666 2101 0 64.1 2001/121 43 16:57:00 17:04:00 5000 2000 2 12 1666 2101 0 63.2 2001/122 65 00:48:00 00:55:00 5000 2000 2 12 1666 2101 0 57.0 2001/122 65 02:46:00 02:53:00 5000 2000 2 12 1666 2101 0 57.6 2001/122 25 10:37:00 10:44:00 5000 2000 2 12 1666 2101 0 20.7 Anomalies --------- Occultations 9601i and 9602i (DSS 43, start times 2001/121-14:59:00 and 16:57:00) have very broad "noise" skirts around the carrier -- a common symptom at these high SNR values. Interestingly, there is no evidence of 60 or 120 Hz spurs, which are also common at high carrier SNR. Spurs have been see in data from time to time collected using 34-m antennas for the past month. As noted above, occultation 96iii (DSS 25, start time 2001/122-10:37:00) was lost when the spacecraft went into Contingency Mode. Closed Loop Data ================ Data Collection --------------- We have obtained the following files from OSCAR and EPIC: Original File Name Name on SOPC -------------------------------- ------------ ODF: 01117O120_10S.SJO;1 1117120A.ODF ODF: 01120O121_10S.SJO;1 1120121A.ODF Ancillary Data ============== Data Collection --------------- We have obtained the following files from the FIS: Original File Name Name on SOPC -------------------------------- ------------ AMD: amdgen.01-121.out 1119120A.AMD AMD: amdgen.01-122.out 1120120A.AMD OPT: optg_m_010422_OD9492-9575_rec_V1 1112119A.OPT SAK: mgs_solar_array_2001-120.ck 1120120A.SAK SPK: spk_m_010422_OD9492-9575_rec_V1 1112119A.SPK TCK: mgs_spice_c_kernel_2001-120.ck 1120120A.TCK We have obtained the following files from NAIF: Original File Name Name on SOPC -------------------------------- ------------ AGK: mgs_hga_ck_2001-04-22.bc 1112112A.AGK Figure Captions =============== HEA1122A.PS1: Latitudes of occultation points versus time. HEA1122A.PS2: Solar zenith angle at occultation points versus time. Figures ======= Plot(s) illustrate some of the points made in the text. Each plot is a PostScript file, created and printable on our SOPC. For report text file HEAydddC.TXT Figure N will be labeled HEAydddC.PSN and sent as the N+1st e-mail message of a set. We assume that you can strip off the e-mail headers and either display or print copies of the figures on a machine in your area. People who have indicated that they cannot handle these files by e-mail are not included in the e-mail distribution of figures.