PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2003-01-02 NOTE = "MGS RST Instrument Health Report HEA3002A.TXT" END_OBJECT = TEXT END Miscellaneous ============= Because of the holiday break, this is the first report since HEA2363A.TXT. This is an abbreviated report. Dale Howell (LMCO) reports the spacecraft fuel and mass status as follows: For the period 2002/337 to 2003/001: ------------------------------------ 20.06573 Kg Hydrazine Remaining 5.26 kg Hydrazine Unusable 14.8057 kg Usable Hydrazine Remaining 0.14228 kg used over last 29 days. Average daily usage: 4.91 g/day Spacecraft Mass = 674.52 Kg (dry mass) + 5.29 Kg (Ox) + 20.066 Kg (Fuel) = 699.876 Kg (Total Mass) Engineering Data ================ Engineering Data Statistical Summary from CSV2STAT: First SCET: 2002-12-28T00:00:04.706 Last SCET: 2002-12-28T23:59:56.692 CHANNL CHANNEL TITLE DN-LO DN-HI EU-LO EU-HI EU-AVG/STDEV RECDS ------ ------------- ----- ----- --------- --------- ---------/-------- ----- F-0190 HGA_AZ_ANG 6424 12240 1.57E+00 2.99E+00 2.79E+00/8.86E-03 2686 F-0195 HGA_EL_ANG -11233 11091 -2.74E+00 2.71E+00 -6.04E-01/3.32E-02 2686 L-0034 MOT1_RANGING 0 0 5377 L-0036 MOT1_TLM_MOD 0 0 5381 L-0037 MOT1_USO_ENA 0 0 5377 L-0044 MOT2_RANGING 1 1 5377 L-0046 MOT2_TLM_MOD 0 1 5381 L-0047 MOT2_USO_ENA 1 1 5377 L-0053 RF_SW_OSC 2 2 5381 L-0060 TWTA1_FILMNT 0 0 5377 L-0061 TWTA1_HV 0 0 5379 L-0070 TWTA2_FILMNT 1 1 5379 L-0071 TWTA2_HV 0 1 5377 L-0080 USO_PWR 0 0 5377 L-0090 KaBLE_STAT 0 0 5377 L-0091 KaBLE_ENABLE 1 1 5379 L-0111 MOT1_RCV_AGC 255 255 -1.53E+02 -1.53E+02 -1.53E+02/8.16E-07 5377 L-0121 MOT2_RCV_AGC 158 255 -1.53E+02 -1.26E+02 -1.48E+02/1.24E-01 5377 L-0131 TWTA1_HLX_I 0 2 -3.84E-02 1.32E-03 -3.82E-02/2.18E-05 5377 L-0132 TWTA1_ANOD_V 0 1 -1.00E+03 -1.00E+03 -1.00E+03/1.69E-02 671 L-0141 TWTA2_HLX_I 17 42 2.86E-01 7.85E-01 5.05E-01/2.76E-03 5377 L-0142 TWTA2_ANOD_V 63 229 -8.62E+02 -5.30E+02 -6.62E+02/6.16E+00 671 L-0200 USO_REG_V 203 205 4.06E+00 4.10E+00 4.08E+00/2.57E-04 672 L-0201 USO_OVEN_V 128 130 2.56E+00 2.60E+00 2.58E+00/2.00E-04 672 T-0302 EPC1_T 187 196 -4.19E+00 -3.25E-01 -2.58E+00/3.57E-02 672 T-0303 EPC2_T 182 193 -2.86E+00 1.71E+00 -6.62E-01/4.89E-02 672 T-0310 RF_ISOLTR1_T 229 233 -6.05E+00 -1.15E+00 -3.43E+00/8.73E-03 5381 T-0311 RF_ISOLTR2_T 224 233 -6.05E+00 4.11E+00 -8.01E-01/2.79E-02 5381 T-0312 TWT1_T 228 232 -4.77E+00 -2.48E-02 -2.55E+00/3.14E-02 672 T-0313 TWT2_T 218 234 -7.39E+00 9.37E+00 4.95E-01/1.81E-01 672 T-0315 USO_T 144 147 1.97E+01 2.06E+01 2.02E+01/7.33E-03 672 T-0316 KA_AMP_T 214 220 7.73E+00 1.23E+01 9.92E+00/2.51E-02 673 Engineering Data Statistical Summary from CSV2STAT: First SCET: 2002-12-29T00:00:04.692 Last SCET: 2002-12-29T23:59:56.679 CHANNL CHANNEL TITLE DN-LO DN-HI EU-LO EU-HI EU-AVG/STDEV RECDS ------ ------------- ----- ----- --------- --------- ---------/-------- ----- F-0190 HGA_AZ_ANG 6424 12242 1.57E+00 2.99E+00 2.83E+00/8.04E-03 2693 F-0195 HGA_EL_ANG -11233 11091 -2.74E+00 2.71E+00 -8.40E-01/3.09E-02 2693 L-0034 MOT1_RANGING 0 0 5393 L-0036 MOT1_TLM_MOD 0 0 5395 L-0037 MOT1_USO_ENA 0 0 5393 L-0044 MOT2_RANGING 1 1 5393 L-0046 MOT2_TLM_MOD 0 1 5395 L-0047 MOT2_USO_ENA 1 1 5393 L-0053 RF_SW_OSC 2 2 5395 L-0060 TWTA1_FILMNT 0 0 5393 L-0061 TWTA1_HV 0 0 5394 L-0070 TWTA2_FILMNT 0 1 5394 L-0071 TWTA2_HV 0 1 5393 L-0080 USO_PWR 0 0 5393 L-0090 KaBLE_STAT 0 0 5393 L-0091 KaBLE_ENABLE 1 1 5394 L-0111 MOT1_RCV_AGC 255 255 -1.53E+02 -1.53E+02 -1.53E+02/8.19E-07 5393 L-0121 MOT2_RCV_AGC 157 255 -1.53E+02 -1.26E+02 -1.48E+02/1.28E-01 5393 L-0131 TWTA1_HLX_I 0 1 -3.84E-02 -1.85E-02 -3.82E-02/2.48E-05 5393 L-0132 TWTA1_ANOD_V 0 1 -1.00E+03 -1.00E+03 -1.00E+03/1.73E-02 675 L-0141 TWTA2_HLX_I 17 43 2.86E-01 8.05E-01 4.72E-01/2.61E-03 5393 L-0142 TWTA2_ANOD_V 62 229 -8.64E+02 -5.30E+02 -6.36E+02/5.83E+00 675 L-0200 USO_REG_V 203 205 4.06E+00 4.10E+00 4.08E+00/2.38E-04 675 L-0201 USO_OVEN_V 128 130 2.56E+00 2.60E+00 2.58E+00/2.26E-04 675 T-0302 EPC1_T 188 197 -4.65E+00 -7.38E-01 -2.87E+00/3.90E-02 673 T-0303 EPC2_T 181 192 -2.43E+00 2.11E+00 -8.03E-01/4.56E-02 673 T-0310 RF_ISOLTR1_T 229 233 -6.05E+00 -1.15E+00 -3.32E+00/9.05E-03 5395 T-0311 RF_ISOLTR2_T 224 233 -6.05E+00 4.11E+00 -1.38E+00/2.95E-02 5395 T-0312 TWT1_T 228 232 -4.77E+00 -2.48E-02 -2.51E+00/3.48E-02 674 T-0313 TWT2_T 218 234 -7.39E+00 9.37E+00 -6.34E-01/1.81E-01 674 T-0315 USO_T 144 147 1.97E+01 2.06E+01 2.01E+01/7.19E-03 673 T-0316 KA_AMP_T 215 220 7.73E+00 1.16E+01 9.87E+00/2.45E-02 674 L-0200, L-0201, and T-0315 are nominal. Open Loop Data ============== Data Collection --------------- We have transferred the following RSR open loop data to Stanford: YYYY/DDD DSS RSR RSR CH KSPS BT REC RECS RSR MAX START STOP ID RS LEN FILE NAME SNR -------- --- -------- -------- --- -- ---- -- ----- ----- ------------ ----- 2002/363 63 06:47:00 06:57:00 3 1 2 16 8260 601 23630647.RSR 56.9 2002/363 63 08:45:00 08:55:00 3 1 2 16 8260 601 23630845.RSR 57.9 2002/363 63 10:42:00 10:52:00 3 1 2 16 8260 601 23631042.RSR 56.8 2002/363 63 12:40:00 12:50:00 3 1 2 16 8260 601 23631240.RSR 53.5 2002/363 65 06:47:00 06:57:00 4 1 2 16 8260 601 2363064H.RSR 50.6 2002/363 65 08:45:00 08:55:00 4 1 2 16 8260 601 2363084F.RSR 50.8 2002/363 15 12:40:00 12:50:00 3 1 2 16 8260 601 2363124A.RSR 49.8 2002/363 15 14:38:00 14:48:00 3 1 2 16 8260 601 23631438.RSR 49.7 2002/363 15 16:35:00 16:45:00 3 1 2 16 8260 601 23631635.RSR 49.9 2002/363 15 18:33:00 18:43:00 3 1 2 16 8260 601 23631833.RSR 49.1 2002/363 15 20:31:00 20:41:00 3 1 2 16 8260 601 23632031.RSR 47.4 2002/364 45 02:24:00 02:34:00 3 1 2 16 8260 601 23640224.RSR 50.9 2002/364 45 04:22:00 04:31:00 3 1 2 16 8260 541 23640422.RSR 48.0 2002/364 65 04:22:00 04:31:00 3 1 2 16 8260 541 2364042C.RSR 48.2 2002/364 65 06:19:00 06:29:00 3 1 2 16 8260 601 23640619.RSR 49.2 2002/364 65 08:17:00 08:27:00 3 1 2 16 8260 601 23640817.RSR 51.5 2002/364 65 10:15:00 10:25:00 3 1 2 16 8260 601 23641015.RSR 51.4 2002/364 15 12:12:00 12:22:00 3 1 2 16 8260 601 23641212.RSR 49.1 2002/364 15 14:10:00 14:20:00 3 1 2 16 8260 601 23641410.RSR 49.8 2002/364 15 16:08:00 16:18:00 3 1 2 16 8260 601 23641608.RSR 49.7 2002/364 15 18:05:00 18:15:00 3 1 2 16 8260 601 23641805.RSR 48.9 Anomalies --------- The following observations had decreasing carrier levels during the approach to occultation. Occultation Start Date/Time DSS Magnitude and Duration ----------- ----------------- --- --------------------------------- 17025i 2002/363-12:40:00 15 -0.5 dB over 150 s before ingress 17039i 2002/364-18:05:00 15 -0.5 dB over 300 s before ingress The following occultations had noisy carrier levels prior to ingress. Occultation Start Date/Time DSS Magnitude ----------- ----------------- --- --------- 17028i 2002/363-18:33:00 15 +/-0.5 dB 17029i 2002/363-20:31:00 15 +/-0.5 dB 17032i 2002/364-04:22:00 45 +/-0.8 dB 17032i 2002/364-04:22:00 65 +/-1.0 dB All data collected using DSS 63 have weak spurs +/-180 Hz from the carrier. The following occultation was collected using two DSN antennas: Occultation Start Date/Time DSS 1 DSS 2 ----------- ----------------- ----- ----- 17032i 2002/364-04:22:00 45 65 Analyses -------- Joe Twicken has completed a comparision of data collected from three occultations using DSS 24 and DSS 25 in parallel. His report: Three ingress occultations (16793i-16795i) were recorded simultaneously on 2002/344 at both DSS 24 and 25. I have processed each open-loop recording, and the results may be found in the tables below. The USO frequency extracted from the recordings at stations 24 and 25 agreed to within 1 mHz for each occultation (Table 1). The SNR for each occultation was better at DSS 25 than DSS 24, the difference ranging from approximately 0.7 to 2 dB (Table 2). The frequency stability at DSS 25 was better than DSS 24 at integration times less than or equal to 4 seconds (the short integration times are those most affected by SNR); at integration times greater than or equal to 8 seconds the stability at station 24 was generally (except in one case) comparable or better than that at 25 (Table 3). Table 1 ------------------------------------------------- Estimated USO Frequency (Hz); T = 4.096 sec ------------------------------------------------- Occ DSS 24 DSS 25 ------ -------------- --------------- 16793i 8423153056.473 8423153056.473 16794i 8423153056.454 8423153056.454 16795i 8423153056.457 8423153056.458 Table 2 ------------------------------------------------- Nominal SNR (dB/Hz) ------------------------------------------------- Occ DSS 24 DSS 25 ------ ------ ------ 16793i 50.0 50.7 16794i 49.0 51.1 16795i 48.8 50.6 Table 3 ------------------------------------------------- Allan deviation ------------------------------------------------- Occ 16793i: 2002/344 15:33:00-15:43:00 ------------------------------------------------- T, sec DSS 24 DSS 25 (23441533.RSR) (2344153D.RSR) ------- -------------- -------------- 0.512 7.8722e-13 6.0291e-13 1.024 4.9167e-13 3.0321e-13 2.048 2.1525e-13 1.7368e-13 4.096 1.3759e-13 1.3329e-13 8.192 7.7307e-14 1.0318e-13 32.768 5.8806e-14 7.2344e-14 Occ 16794i: 2002/344 17:31:00-17:41:00 ------------------------------------------------- T, sec DSS 24 DSS 25 (23441731.RSR) (2344173B.RSR) ------- -------------- -------------- 0.512 8.3576e-13 6.3754e-13 1.024 4.6497e-13 2.7653e-13 2.048 2.4717e-13 2.0637e-13 4.096 1.5262e-13 1.2419e-13 8.192 9.8904e-14 9.9287e-14 32.768 1.3624e-13 1.4035e-13 Occ 16795i: 2002/344 17:29:00-19:39:00 ------------------------------------------------- T, sec DSS 24 DSS 25 (23441929.RSR) (2344192J.RSR) ------- -------------- -------------- 0.512 7.5185e-13 5.8786e-13 1.024 4.8157e-13 3.0283e-13 2.048 2.5191e-13 1.8497e-13 4.096 1.6588e-13 1.3272e-13 8.192 1.3773e-13 1.5168e-13 32.768 9.7354e-14 9.3677e-14 Closed Loop Data ================ Data Collection --------------- We have obtained the following files from OSCAR and EPIC: Original File Name Name on SOPC ------------------------------------ ------------ ATDF: 02354t355.dat 2354355A.TDF ATDF: 02355t357.dat 2355357A.TDF ATDF: 02357t359.dat 2357359A.TDF ATDF: 02359t361.dat 2359361A.TDF ATDF: 02361t362.dat 2361362A.TDF ODF: 02361O363_10S.SJO;1 2361363A.ODF ODF: 02363O364_10S.SJO;1 2363364A.ODF IONCAL: IONCAL_94_0212_0301_DOPR.CSP;1 2335032A.ION TROPCAL: ATC02DEC.CSP;12 2335002A.TRO WEATHER: WEATHER_10_2002.TXT 20013651.WEA WEATHER: WEATHER_40_2002.TXT 20013654.WEA WEATHER: WEATHER_60_2002.TXT 20013656.WEA Ancillary Data ============== Data Collection --------------- No new data.