PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2000-05-29 NOTE = "MGS RST Instrument Health Report HEA0150A.TXT" END_OBJECT = TEXT END Miscellaneous ============= Because of the weekend, this is the first report since HEA0147A.TXT. Engineering Data ================ Engineering Data Statistical Summary from CSV2STAT: First SCET: 2000-05-25T00:00:00.618 Last SCET: 2000-05-25T23:59:52.607 CHANNL CHANNEL TITLE DN-LO DN-HI EU-LO EU-HI EU-AVG/STDEV RECDS ------ ------------- ----- ----- --------- --------- ---------/-------- ----- F-0190 HGA_AZ_ANG 6424 11042 1.57E+00 2.70E+00 2.55E+00/6.69E-03 2689 F-0195 HGA_EL_ANG -11233 11091 -2.74E+00 2.71E+00 -6.84E-01/3.11E-02 2689 L-0034 MOT1_RANGING 0 0 5387 L-0036 MOT1_TLM_MOD 0 0 5383 L-0037 MOT1_USO_ENA 0 0 5387 L-0044 MOT2_RANGING 1 1 5387 L-0046 MOT2_TLM_MOD 0 1 5383 L-0047 MOT2_USO_ENA 1 1 5387 L-0053 RF_SW_OSC 2 2 5383 L-0060 TWTA1_FILMNT 0 0 5387 L-0061 TWTA1_HV 0 0 5385 L-0070 TWTA2_FILMNT 0 1 5385 L-0071 TWTA2_HV 0 1 5387 L-0080 USO_PWR 0 0 5387 L-0090 KaBLE_STAT 0 0 5387 L-0091 KaBLE_ENABLE 1 1 5385 L-0111 MOT1_RCV_AGC 255 255 -1.53E+02 -1.53E+02 -1.53E+02/8.18E-07 5387 L-0121 MOT2_RCV_AGC 182 255 -1.53E+02 -1.35E+02 -1.51E+02/7.47E-02 5387 L-0131 TWTA1_HLX_I 0 1 -3.84E-02 -1.85E-02 -3.83E-02/1.91E-05 5387 L-0132 TWTA1_ANOD_V 0 1 -1.00E+03 -1.00E+03 -1.00E+03/1.14E-02 673 L-0141 TWTA2_HLX_I 16 41 2.66E-01 7.65E-01 4.79E-01/2.61E-03 5387 L-0142 TWTA2_ANOD_V 61 229 -8.66E+02 -5.30E+02 -6.46E+02/6.03E+00 673 L-0200 USO_REG_V 203 205 4.06E+00 4.10E+00 4.08E+00/2.53E-04 673 L-0201 USO_OVEN_V 128 131 2.56E+00 2.62E+00 2.59E+00/3.80E-04 673 T-0302 EPC1_T 187 197 -4.65E+00 -3.25E-01 -2.53E+00/3.98E-02 674 T-0303 EPC2_T 182 192 -2.43E+00 1.71E+00 -7.85E-01/4.55E-02 674 T-0310 RF_ISOLTR1_T 229 233 -6.05E+00 -1.15E+00 -3.37E+00/8.44E-03 5383 T-0311 RF_ISOLTR2_T 224 233 -6.05E+00 4.11E+00 -1.05E+00/2.85E-02 5383 T-0312 TWT1_T 227 232 -4.77E+00 1.06E+00 -2.20E+00/3.78E-02 673 T-0313 TWT2_T 218 233 -6.05E+00 9.37E+00 1.48E-01/1.76E-01 673 T-0315 USO_T 139 144 2.06E+01 2.20E+01 2.13E+01/8.45E-03 674 T-0316 KA_AMP_T 215 219 8.56E+00 1.16E+01 9.93E+00/2.37E-02 673 L-0200, L-0201, and T-0315 are nominal. Engineering Data Statistical Summary from CSV2STAT: First SCET: 2000-05-26T00:00:00.607 Last SCET: 2000-05-26T23:59:52.596 CHANNL CHANNEL TITLE DN-LO DN-HI EU-LO EU-HI EU-AVG/STDEV RECDS ------ ------------- ----- ----- --------- --------- ---------/-------- ----- F-0190 HGA_AZ_ANG 6424 11042 1.57E+00 2.70E+00 2.53E+00/7.20E-03 2666 F-0195 HGA_EL_ANG -11232 11091 -2.74E+00 2.71E+00 -5.85E-01/3.26E-02 2666 L-0034 MOT1_RANGING 0 0 5338 L-0036 MOT1_TLM_MOD 0 0 5338 L-0037 MOT1_USO_ENA 0 0 5338 L-0044 MOT2_RANGING 1 1 5338 L-0046 MOT2_TLM_MOD 0 1 5338 L-0047 MOT2_USO_ENA 1 1 5338 L-0053 RF_SW_OSC 2 2 5338 L-0060 TWTA1_FILMNT 0 0 5338 L-0061 TWTA1_HV 0 0 5341 L-0070 TWTA2_FILMNT 0 1 5341 L-0071 TWTA2_HV 0 1 5338 L-0080 USO_PWR 0 0 5338 L-0090 KaBLE_STAT 0 0 5338 L-0091 KaBLE_ENABLE 1 1 5341 L-0111 MOT1_RCV_AGC 255 255 -1.53E+02 -1.53E+02 -1.53E+02/8.10E-07 5338 L-0121 MOT2_RCV_AGC 163 255 -1.53E+02 -1.28E+02 -1.50E+02/9.61E-02 5338 L-0131 TWTA1_HLX_I 0 1 -3.84E-02 -1.85E-02 -3.83E-02/1.74E-05 5338 L-0132 TWTA1_ANOD_V 0 1 -1.00E+03 -1.00E+03 -1.00E+03/1.44E-02 666 L-0141 TWTA2_HLX_I 16 42 2.66E-01 7.85E-01 5.00E-01/2.70E-03 5338 L-0142 TWTA2_ANOD_V 0 229 -9.88E+02 -5.30E+02 -6.64E+02/6.26E+00 666 L-0200 USO_REG_V 203 205 4.06E+00 4.10E+00 4.08E+00/2.63E-04 667 L-0201 USO_OVEN_V 129 131 2.58E+00 2.62E+00 2.59E+00/3.78E-04 667 T-0302 EPC1_T 187 196 -4.19E+00 -3.25E-01 -2.38E+00/3.74E-02 666 T-0303 EPC2_T 182 192 -2.43E+00 1.71E+00 -6.66E-01/4.78E-02 666 T-0310 RF_ISOLTR1_T 229 233 -6.05E+00 -1.15E+00 -3.43E+00/8.33E-03 5338 T-0311 RF_ISOLTR2_T 224 232 -4.77E+00 4.11E+00 -7.02E-01/2.71E-02 5338 T-0312 TWT1_T 228 232 -4.77E+00 -2.48E-02 -2.25E+00/3.60E-02 667 T-0313 TWT2_T 217 233 -6.05E+00 1.01E+01 8.28E-01/1.75E-01 667 T-0315 USO_T 140 143 2.09E+01 2.17E+01 2.14E+01/7.56E-03 666 T-0316 KA_AMP_T 215 220 7.73E+00 1.16E+01 9.95E+00/2.54E-02 669 L-0200, L-0201, and T-0315 are nominal. Engineering Data Statistical Summary from CSV2STAT: First SCET: 2000-05-27T00:00:00.596 Last SCET: 2000-05-27T23:59:52.585 CHANNL CHANNEL TITLE DN-LO DN-HI EU-LO EU-HI EU-AVG/STDEV RECDS ------ ------------- ----- ----- --------- --------- ---------/-------- ----- F-0190 HGA_AZ_ANG 6424 11048 1.57E+00 2.70E+00 2.52E+00/7.46E-03 2608 F-0195 HGA_EL_ANG -11232 11091 -2.74E+00 2.71E+00 -4.94E-01/3.37E-02 2608 L-0034 MOT1_RANGING 0 0 5217 L-0036 MOT1_TLM_MOD 0 0 5216 L-0037 MOT1_USO_ENA 0 0 5217 L-0044 MOT2_RANGING 1 1 5217 L-0046 MOT2_TLM_MOD 0 1 5216 L-0047 MOT2_USO_ENA 1 1 5217 L-0053 RF_SW_OSC 2 2 5216 L-0060 TWTA1_FILMNT 0 0 5217 L-0061 TWTA1_HV 0 0 5218 L-0070 TWTA2_FILMNT 0 1 5218 L-0071 TWTA2_HV 0 1 5217 L-0080 USO_PWR 0 0 5217 L-0090 KaBLE_STAT 0 0 5217 L-0091 KaBLE_ENABLE 1 1 5218 L-0111 MOT1_RCV_AGC 255 255 -1.53E+02 -1.53E+02 -1.53E+02/7.89E-07 5217 L-0121 MOT2_RCV_AGC 164 255 -1.53E+02 -1.28E+02 -1.49E+02/1.21E-01 5217 L-0131 TWTA1_HLX_I 0 1 -3.84E-02 -1.85E-02 -3.82E-02/2.18E-05 5217 L-0132 TWTA1_ANOD_V 0 1 -1.00E+03 -1.00E+03 -1.00E+03/1.38E-02 652 L-0141 TWTA2_HLX_I 17 42 2.86E-01 7.85E-01 5.11E-01/2.76E-03 5217 L-0142 TWTA2_ANOD_V 61 229 -8.66E+02 -5.30E+02 -6.71E+02/6.37E+00 652 L-0200 USO_REG_V 203 205 4.06E+00 4.10E+00 4.08E+00/2.31E-04 652 L-0201 USO_OVEN_V 128 131 2.56E+00 2.62E+00 2.59E+00/4.00E-04 652 T-0302 EPC1_T 186 196 -4.19E+00 8.59E-02 -2.23E+00/3.46E-02 653 T-0303 EPC2_T 181 192 -2.43E+00 2.11E+00 -6.39E-01/4.93E-02 653 T-0310 RF_ISOLTR1_T 229 233 -6.05E+00 -1.15E+00 -3.46E+00/8.06E-03 5216 T-0311 RF_ISOLTR2_T 224 232 -4.77E+00 4.11E+00 -4.40E-01/2.59E-02 5216 T-0312 TWT1_T 228 232 -4.77E+00 -2.48E-02 -2.25E+00/3.54E-02 653 T-0313 TWT2_T 218 233 -6.05E+00 9.37E+00 1.23E+00/1.75E-01 653 T-0315 USO_T 140 143 2.09E+01 2.17E+01 2.13E+01/8.62E-03 653 T-0316 KA_AMP_T 215 219 8.56E+00 1.16E+01 9.98E+00/2.60E-02 653 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 -------- --- -------- -------- ---- ---- ---- ---- ---- ----- ---- ----- 2000/147 15 20:58:00 21:06:00 5000 2000 2 12 1666 2401 0 45.2 2000/147 15 22:56:00 23:03:00 5000 2000 2 12 1666 2101 0 45.9 2000/148 15 00:54:00 01:01:00 5000 2000 2 12 1666 2101 0 47.3 2000/148 65 10:42:00 10:49:00 5000 2000 2 12 1666 2101 0 46.7 2000/148 65 14:37:00 14:44:00 5000 2000 2 12 1666 2101 0 46.1 2000/148 65 16:35:00 16:42:00 5000 2000 2 12 1666 2101 0 46.2 2000/148 65 18:33:00 18:40:00 5000 2000 2 12 1666 2101 0 45.3 2000/148 15 20:30:00 20:37:00 5000 2000 2 12 1666 2101 0 48.5 2000/148 15 22:28:00 22:35:00 5000 2000 2 12 1666 2101 0 49.0 2000/149 15 00:26:00 00:33:00 5000 2000 2 12 1666 2101 0 48.4 2000/149 15 02:23:00 02:30:00 5000 2000 2 12 1666 2101 0 46.9 2000/149 65 10:14:00 10:21:00 5000 2000 2 12 1666 2101 0 45.7 2000/149 65 12:11:00 12:19:00 5000 2000 2 12 1666 2401 0 46.4 2000/149 65 14:09:00 14:16:00 5000 2000 2 12 1666 2101 0 47.0 2000/149 65 16:07:00 16:14:00 5000 2000 2 12 1666 2101 0 46.1 2000/149 65 18:04:00 18:12:00 5000 2000 2 12 1666 2401 0 45.2 2000/149 25 20:02:00 20:09:00 5000 2000 2 12 1666 2101 0 43.9 2000/149 25 22:00:00 22:07:00 5000 2000 2 12 1666 2101 0 46.9 2000/149 25 23:57:00 00:04:00 5000 2000 2 12 1666 2101 0 47.2 2000/150 25 01:55:00 02:02:00 5000 2000 2 12 1666 2101 0 46.3 2000/150 45 03:53:00 04:00:00 5000 2000 2 12 1666 2101 0 48.8 2000/150 45 05:50:00 05:58:00 5000 2000 2 12 1666 2401 0 47.0 2000/150 54 07:48:00 07:55:00 5000 2000 2 12 1666 2101 0 46.6 Anomalies --------- Data from occultation 5444i (DSS 15, start time 2000/147T20:58:00) have what appears to be an unstable carrier frequency. Data from occultation 5445i (DSS 15, start time 2000/147T22:56:00) have a -1 dB noise level change 75 s after ingress. Data from occultations 5447i and 5448i (DSS 45, start times 2000/148T 02:51:00 and 04:49:00) have not been found. Data transfer between JPL and SPC 40 was poor, however; so these files may have been delayed in transit. We will continue querying. Data from occultation 5452i (DSS 148, start time 2000/148T12:40:00) have not been found. Cause is unknown. Data from occultations 5460i and 5461i (DSS 45, start times 2000/149T 04:21:00 and 06:19:00) were lost because the SPC server was not running. Data from DSS 65 on 2000/149 have sudden, small-amplitude, and short- lived departures from constant carrier amplitude prior to ingress. Variations in data from occultation 5463i (start time 10:14:00) have amplitudes as large as +/-0.4 dB and last a few seconds (less than 5). Variations in data from 5464i (start time 12:11:00) are very regular -- spaced at exactly 55 s, a decrease of 0.2 dB followed by a slight overshoot on the recovery 1-2s later. Variations in 5465i and 5466i look mostly random. Variations in 5467i look random except for a single 2 dB dropout about 160 s before ingress. Data from occultation 5468i (DSS 25, start time 2000/149T20:02:00) were collected using DSN receiver tuning predicts. Data from occultation 5468i (DSS 25, start time 2000/149T20:02:00) have a -1 dB change in noise level about 90s after ingress. Data from occultations 5472i and 5473i (DSS 45, start times 2000/150T 03:53:00 and 05:50:00) were collected with attenuator settings 12-14 dB too high. The ftp link to SPC 40 has been down for several days, so it has been difficult to conduct remote operations. Trish Priest noted that she wasn't able to tell which DSP was connected during this time; since they require different attenuator settings for the same output levels, she took the conservative approach and opted for high attenuations rather than have analog-to-digital converters saturate. Analysis -------- Although surface echoes are seldom seen in quick-look plots, we have adapted software used to analyze the surface echoes to derive occultation times for the MGS Navigation Team. MGS NAV is looking for ways to estimate orbit errors during the few weeks after solar conjunction, and we have agreed to provide occultation times. Approximately 50 ingress occultations have been processed beginning 2000/144; each showed at least a trace surface echo, and many had detailed structure (turning on and off as the reflecting region moves through more or less reflecting terrain). Two egress occultations were analyzed; neither showed a surface echo. Whether this represents a fundamental difference between northern and southern hemispheres (or a seasonal difference) or whether it is an artifact of imperfect (but repeated) mispointing of the HGA cannot be determined at this time. Occultation times are calculated using 12.8 msec samples of carrier power; based on dual recording of ingress occultation 5429i at DSS 54 and DSS 25, we estimate the accuracy of the occultation times obtained in this way to be about 25 msec (two samples). The brief table below shows example occultation times (tocc) in ERT seconds from midnight. ODR File Name Occultation Occultation (ddddhhmm.ODR) Sense (I or E) Time (tocc, s) -------------- -------------- -------------- 01472058.ODR I 75835.731100 01472256.ODR I 82897.964700 01480054.ODR I 03557.958300 01481042.ODR I 38851.283100 01481437.ODR I 52974.150300 01481635.ODR I 60030.854300 01481833.ODR I 67085.599900 01482030.ODR I 74145.567900 01482228.ODR I 81208.313500 01490026.ODR I 01869.881500 01490223.ODR I 08929.401500 01491014.ODR I 37161.734300 01491211.ODR I 44223.443100 01491607.ODR I 58344.620700 01491804.ODR I 65398.841500 01491804.ODR I 65398.841500 01492002.ODR I 72455.596700 01492200.ODR I 79516.921500 01492357.ODR I 86580.486300 01500155.ODR I 07240.172700 01500353.ODR I 14298.758300 01500550.ODR I 21355.987100 01500748.ODR I 28413.075100 Closed Loop Data ================ Data Collection --------------- We have obtained the following files from OSCAR: Original File Name Name on SOPC -------------------------------- ------------ ATDF: 00139T141.DAT;1 0139141A.TDF ATDF: 00141T142.DAT;1 0141142A.TDF ATDF: 00142T143.DAT;1 0142143A.TDF ATDF: 00143T145.DAT;1 0143145A.TDF ATDF: 00145T147.DAT;1 0145147A.TDF Ancillary Data ============== Data Collection --------------- We have obtained the following files from the FIS: Original File Name Name on SOPC -------------------------------- ------------ AMD: amdgen.00-148.out 0146147A.AMD AMD: amdgen.00-149.out 0147148A.AMD SAK: mgs_solar_array_2000-146.ck 0146146A.SAK SAK: mgs_solar_array_2000-147.ck 0147147A.SAK SAK: mgs_solar_array_2000-148.ck 0148148A.SAK TCK: mgs_spice_c_kernel_2000-146.ck 0146146A.TCK TCK: mgs_spice_c_kernel_2000-147.ck 0147147A.TCK TCK: mgs_spice_c_kernel_2000-148.ck 0148148A.TCK We have obtained the following files from NAIF and/or IPNG: Original File Name Name on SOPC -------------------------------- ------------ AGK: mgs_hga_ck_2000-05-26.bc 0147147A.AGK IPN: mgs_map4_ipng_mgs75c.bsp 9320041A.IPN Figure Captions =============== HEA0150A.PS1: Figure shows cumulative data from the MGS Radio Science 'instrument' since orbit insertion in both closed-loop (TDF) and open-loop (ODR) formats. TDF data are generated at about 1.3 MB/hr while the spacecraft is being tracked. For 24-hr coverage since MOI, we would have expected about 3.13e10 bytes; the 2.73e10 bytes collected represents an average rate about 87 percent of 24-hr coverage. Occultation data collection is uneven; plateaus during late 1998 and late 1999 correspond to times when Earth was sufficiently out of the orbit plane that there were no occultations. Change in slope in early 2000 corresponds to loss of egress occultations because of boom constraints. Plot was constructed from CUMINDEX.TAB files on archival CDs for MOI and Mapping data sets assuming 39.2 MB per TDF and 8.33 kB/s for ODRs. 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.