IVS-R&D-01 / RD0501 2005 Jan 19-20 019/18:00 - 020/18:00 Haystack correlator expt #3088 Fourfit quality code summary: 93% 7-9 5% 1-6,A-H 1% 0 (non-detection) 1% no data Algonquin (G/Ap): Lower-than-normal X-band sensitivity, cause unknown. Kokee (K/Kk): Fringed with manual phases. One disk bad from 020-1246 to the end of the experiment, causing loss of 1/8 of data. 5% of X-band scans are G codes due to low fringe amplitude in channel X8, mainly on Kk-Wf baseline. Missed two scans due to disk pack change problems. Ny Alesund (N/Ny): OK. Onsala (T/On): OK. Westford (E/Wf): Fringed S-band with manual phases due to presence of spurious signals at ~-20 dBc level in many channels. ~4% of S-band scans are G codes due to RFI in channel S4. Missed one scan due to antenna problem. Wettzell (V/Wz): Many short scans and scans with low fringe QC due to a problem with Gbps recording in Mark 5A unit, which caused fringes and phase cal to disappear part way through scan, coincident with a significant loss of data (usually >50%) in every channel. RFI in channel S4 from about 020-0950 to 020-1040. All stations recorded on Mark 5A. All scans with |delay rate| < 5e-8 were fringed with the first 2 seconds of data deleted, to avoid spurious fringes between transient, non-random signals generated by correlator station units at start of playback. $ Clocks: Haystack Station fmout-gps Used rate Comments [usec] [usec] [sec/sec] Ap 4.3 4.738 0.48e-12 Kk -0.3 -0.085 -0.11e-12 Ny -15.8 -15.744 -0.11e-12 On 21.9 21.832 0.70e-12 Wf 6.9 6.900 0.00 Reference Wz -15.1 -14.954 -0.16e-12 Date: 05/01/19 Processing factor = 1.33 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 --------------------------------------------------------------------------- GN:X 0 0 0 0 0 2 3 0 9 156 0 0 0 0 0 0 0 0 0 0 170 GN:S 0 0 0 0 0 8 5 6 24 127 0 0 0 0 0 0 0 0 0 0 170 GT:X 3 0 0 0 0 1 2 3 1 152 0 0 0 0 0 0 0 0 1 0 163 GT:S 3 0 0 0 0 1 1 2 4 151 0 0 0 0 0 0 0 0 1 0 163 GE:X 0 0 0 0 0 3 2 0 3 220 0 0 0 0 0 0 0 0 0 1 229 GE:S 0 0 0 0 0 2 2 1 15 204 0 0 0 0 0 0 4 0 0 1 229 GV:X 3 0 0 0 0 4 4 1 3 141 0 0 0 0 0 0 0 0 0 0 156 GV:S 3 0 0 0 0 4 4 0 3 142 0 0 0 0 0 0 0 0 0 0 156 GK:X 1 0 0 0 0 2 0 1 19 114 0 0 0 0 0 0 2 0 0 2 141 GK:S 0 0 0 0 0 2 1 0 3 133 0 0 0 0 0 0 0 0 0 2 141 NT:X 3 0 0 0 0 1 1 2 30 168 0 0 0 0 0 0 0 0 1 0 206 NT:S 3 0 0 0 0 4 6 16 44 132 0 0 0 0 0 0 0 0 1 0 206 NE:X 0 0 0 0 0 0 0 2 27 162 0 0 0 0 0 0 0 0 0 1 192 NE:S 0 0 0 0 2 9 6 20 44 104 0 0 0 0 0 0 6 0 0 1 192 NV:X 4 0 0 0 0 7 0 6 25 148 0 0 0 0 0 0 0 0 0 0 190 NV:S 4 0 0 0 0 17 11 17 37 104 0 0 0 0 0 0 0 0 0 0 190 NK:X 0 0 0 0 0 0 2 7 29 56 0 0 0 0 0 0 1 0 0 1 96 NK:S 0 0 0 0 0 8 5 10 22 50 0 0 0 0 0 0 0 0 0 1 96 TE:X 2 0 0 0 0 1 0 0 23 164 0 0 0 0 0 0 0 0 1 0 191 TE:S 2 0 0 0 0 1 0 6 82 83 0 0 0 0 0 0 16 0 1 0 191 TV:X 9 0 0 0 1 6 2 9 17 216 0 0 0 0 0 0 0 0 2 0 262 TV:S 9 0 0 0 0 1 3 10 3 234 0 0 0 0 0 0 0 0 2 0 262 TK:X 0 0 0 0 0 1 1 13 29 32 0 0 0 0 0 0 2 0 0 1 79 TK:S 0 0 0 0 0 0 0 0 1 77 0 0 0 0 0 0 0 0 0 1 79 EV:X 4 0 0 0 0 6 3 5 25 144 0 0 0 0 0 0 0 0 0 0 187 EV:S 4 0 0 0 1 0 3 8 14 147 0 0 0 0 0 0 10 0 0 0 187 EK:X 0 0 0 0 0 1 6 22 53 28 0 0 0 0 0 0 27 0 0 1 138 EK:S 0 0 0 0 0 0 0 2 18 111 0 0 0 0 0 0 6 0 0 1 138 VK:X 2 0 0 0 0 4 5 7 28 39 0 0 0 0 0 0 0 0 0 1 86 VK:S 2 0 0 0 0 3 1 1 2 75 0 0 0 0 0 0 1 0 0 1 86 --------------------------------------------------------------------------- Totals 61 0 0 0 4 99 79 177 637 3814 0 0 0 0 0 0 75 0 10 16 4972 MEAN RATIOS = Observed SNR / Predicted SNR for exp no. 3088 ...by baseline, over all sources: bl X n S n GK 0.70 138 1.48 139 GN 0.78 170 1.39 170 GT 0.69 159 1.21 159 GE 0.88 228 1.22 228 GV 0.83 153 1.59 153 KN 0.91 95 1.38 95 KT 0.87 78 1.37 78 KE 0.98 137 1.25 137 KV 1.11 83 1.69 83 NT 0.99 202 1.06 202 NE 1.16 191 1.11 191 NV 1.11 186 1.38 186 TE 0.97 188 1.01 188 TV 1.08 251 1.19 251 EV 1.21 183 1.27 183 _______________________________________________ IVS-analysis mailing list IVS-analysis@ivscc.gsfc.nasa.gov http://ivscc.gsfc.nasa.gov/mailman/listinfo/ivs-analysis