APSG-15 2004 September 29-30 273/18:00 - 274/18:00 Haystack correlator expt #3077 Fourfit quality code summary: 60% 7-9 1% 1-6,A-H 1% 0 (non-detection) 38% no data Gilcreek (A/Gc): One scan has an instantaneous jump in delay of ~125 ps at S and X -- apparently an early example of the maser- related jumps that became more frequent later in the year. Hobart (H/Ho): Fringed with manual phases due to presence of a -14 dBc spurious phase cal signal in channel X3, as well as weaker spurious signals in other channels. Recorded on Mark 5A. Kokee (K/Kk): Out for Intensive from 273-1800 to 273-1959. Recorded on Mark 5A. Seshan (C/Sh): No data. Observations ended two hours into session when antenna elevation servo transformer failed. Tsukuba (T/Ts): OK. Urumqi (U/Ur): No fringes and weak phase cal in channel S3 -- deleted in fringing. State counts are strongly biased, with few zeroes and almost all ones. No fringes or phase cal in channel X2 -- deleted in fringing. Fringed with manual phases. S-band phase cal highly unstable in amplitude and relative phase between channels. All X-band channels have spurious signals between -13 and -20 dBc. Highly unstable receiver LO phase at S and X in many scans. Resultant coherence loss is up to 30% at S, 60% at X. Missed 5 scans due to problems with antenna control communications and a power failure. Recorded on Mark 5A. $ Clocks: Haystack Station fmout-gps Used rate Comments [usec] [usec] [sec/sec] Gc -7.4 -7.400 0.44e-12 Reference Ho 11.2 11.178 -0.08e-12 Kk -0.3 -0.047 0.00e-12 Ts 0.2 1.512 0.00e-12 Ur 4.6 4.719 0.37e-12 Date: 04/09/29 Processing factor = 1.58* Processed in two passes due to late arrival of the Urumqi disk module. Fourfit quality/error code distribution by baseline and frequency: Qcodes 0 1 2 3 4 5 6 7 8 9 A B C D E F G H N - Tot ----------------------------------------------------------------------------- AH:X 0 0 0 0 0 0 1 0 5 42 0 0 0 0 0 0 0 0 0 0 48 AH:S 0 0 0 0 0 0 1 1 6 40 0 0 0 0 0 0 0 0 0 0 48 AK:X 0 0 0 0 0 0 0 9 29 183 0 0 0 0 0 0 0 0 0 21 242 AK:S 0 0 0 0 0 0 0 1 6 214 0 0 0 0 0 0 0 0 0 21 242 AC:X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 166 166 AC:S 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 166 166 AT:X 0 0 0 0 0 0 2 2 28 205 0 0 0 0 0 0 0 0 0 0 237 AT:S 0 0 0 0 0 0 0 2 9 225 0 0 0 0 0 0 1 0 0 0 237 AU:X 5 0 0 0 0 2 9 16 14 148 0 0 0 0 0 0 0 0 0 4 198 AU:S 4 0 0 0 0 1 1 6 13 169 0 0 0 0 0 0 0 0 0 4 198 HK:X 0 0 0 0 0 0 0 1 15 67 0 0 0 0 0 0 0 0 0 9 92 HK:S 0 0 0 0 0 0 0 0 6 77 0 0 0 0 0 0 0 0 0 9 92 HC:X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 81 81 HC:S 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 81 81 HT:X 1 0 0 0 0 0 0 5 23 74 0 0 0 0 0 0 0 0 0 0 103 HT:S 0 0 0 0 0 0 0 2 6 95 0 0 0 0 0 0 0 0 0 0 103 HU:X 0 0 0 0 0 1 4 7 7 54 0 0 0 0 0 0 0 0 0 0 73 HU:S 0 0 0 0 0 1 0 1 5 66 0 0 0 0 0 0 0 0 0 0 73 KC:X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 163 163 KC:S 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 163 163 KT:X 0 0 0 0 0 0 0 8 38 165 0 0 0 0 0 0 0 0 0 21 232 KT:S 0 0 0 0 0 0 0 1 11 199 0 0 0 0 0 0 0 0 0 21 232 KU:X 7 0 0 0 0 4 3 9 17 110 0 0 0 0 0 0 0 0 0 21 171 KU:S 5 0 0 0 0 1 0 4 8 132 0 0 0 0 0 0 0 0 0 21 171 CT:X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 242 242 CT:S 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 242 242 CU:X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 223 223 CU:S 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 223 223 TU:X 7 0 0 0 0 16 15 33 40 146 0 0 0 0 0 0 0 0 0 5 262 TU:S 6 0 0 0 0 5 1 11 28 205 0 0 0 0 0 0 1 0 0 5 262 ----------------------------------------------------------------------------- Totals 35 0 0 0 0 31 37 119 314 2616 0 0 0 0 0 0 2 0 0 1912 5066 MEAN RATIOS = Observed SNR / Predicted SNR for exp no. 3077 ...by baseline, over all sources: bl X n S n AH 1.93 48 2.15 48 AK 0.95 221 1.62 221 AT 0.99 237 1.51 237 AU 0.78 189 0.87 190 HK 1.50 83 2.09 83 HT 1.40 101 1.84 103 HU 1.26 73 1.09 73 KT 1.10 211 1.56 211 KU 0.93 143 0.95 145 TU 0.79 250 0.77 251 _______________________________________________ IVS-analysis mailing list IVS-analysis@ivscc.gsfc.nasa.gov http://ivscc.gsfc.nasa.gov/mailman/listinfo/ivs-analysis