INT 204-035 / JADE-0402 correlator report 2004 February 4 035/02:00-036/02:11 Tsukuba VLBI Correlator, Japan Kyoichi Sakamoto, GSI/SED Co., Ltd. Station Comments: ----------------- TSUKUB32(T-Ts): 32 Scans missed due to a failure occurred in the system monitor between UT 035/20:11 and 035/23:19. No signal was put in the channnel "5"(freqs. 2347.99) of S-band. Fringe fitted with excluding the channel. AIRA (A-Ai): Cable delay data is too poor to apply! It seemed to be caused by the room temperature of Aira station. ---- for your data processing ---- It is recommended for all ACs not to use cable calibration for AIRA. ------------------------------------------------------------ CHICHI10(C-Cc): 12 Scans missed due to a failure occurred in the antenna between UT 035/05:04 and 035/05:53. GIFU11 (Y-Gu): No fringe in channels "X1" - "X5" and "X7" - "X8" due to inconsistency with a video converter LO in X-band between original(7680MHz) and GIFU11(7600MHz). Channel "X5" of GIFU11 was same to "X6" of the original frequency table. Fringe got detective at "X6" by having all channels(X1-X8 and S1-S8) of GIFU11 shift in the same direction. ---- frequency table -------------------------- ch original GIFU11 GIFU11(final) X1 8209.99 8289.99 2354.99 <-- S8 of GIFU11 X2 8219.99 8299.99 8289.99 <-- X1 of GIFU11 X3 8249.99 8329.99 8299.99 <-- X2 of GIFU11 X4 8309.99 8389.99 8329.99 <-- X3 of GIFU11 X5 8419.99 8499.99 8389.99 <-- X4 of GIFU11 X6 8499.99 8579.99 8499.99 <-- X5 of GIFU11 X7 8549.99 8629.99 8579.99 <-- X6 of GIFU11 X8 8569.99 8649.99 8629.99 <-- X7 of GIFU11 ----------------------------------------------- Fringe fitted with excluding channels "X1"-"X5" and "X7"-"X8". GIFU11 was included in database but not analyzed. Error rate level of recorder head A was higher during playback. Recorded on both K-4 and optically linked network technology(e-VLBI). PF=7.38 Station Clocks -------------- Clocks: GSI Clocks: fmout-gps used rate Comments [usec] [usec] [sec/sec] Ts 1.90 1.90 0.00 Reference Ai 0.30 -1.35 0.21e-12 Cc 0.10 -1.14 -0.06e-12 Gu 0.00 -3.06 -0.49e-12 Date: 2004/02/04 Statistics ---------- Process Summary by Baseline/Frequency Base 0 1 2 3 4 5 6 7 8 9 D G N - Tot TA X 38 0 0 0 0 0 0 1 10 189 0 0 0 0 238 TA S 0 0 0 0 0 0 0 0 0 0 238 0 0 0 238 TC X 47 0 0 0 0 0 0 1 15 171 0 1 2 1 238 TC S 0 0 0 0 0 0 0 0 0 0 235 0 2 1 238 TY X 0 0 0 0 0 0 0 0 0 0 233 0 5 0 238 TY S 0 0 0 0 0 0 0 0 0 0 233 0 5 0 238 AC X 49 0 0 0 0 0 0 0 1 188 0 0 0 1 239 AC S 34 0 1 0 0 0 0 11 56 136 0 0 0 1 239 AY X 0 0 0 0 0 0 0 0 0 0 231 0 7 0 238 AY S 11 0 0 0 0 0 0 16 35 169 0 1 6 0 238 CY X 0 0 0 0 0 0 0 0 0 0 233 0 4 1 238 CY S 25 0 0 0 0 1 2 5 34 160 2 0 8 1 238 Column Totals, numbers then percentages 204 0 1 0 0 1 2 34 151 1013 1405 2 39 6 2858 % 7.1 .0 .0 .0 .0 .0 .1 --> --> 41.9 49.2 .1 1.4 .2100.0 QC = 0 : Fringes not detected. = 1-9 : Fringes detected. The higher number, the better quality. = D : No data in one or more frequency channels. = G : Fringe amp in a freq ch is <.5 times coherent amp only if snr>20. = N : No valid correlator data. = - : Not scanned Base Line: TA TC TY AC AY CY Total Obs: 238 238 238 239 238 238 Error : 238 238 238 52 238 238 % :100.0100.0100.0 21.8100.0100.0 (ERROR: Q-code of either band is less than 4 or letter code, or not scanned) SNR histogram Distribution of X-band SNRs, for each baseline SNR: 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 >> TA: 9 29 1 0 4 6 12 15 15 18 11 12 10 16 8 8 5 59 TC: 21 27 3 1 6 13 11 17 16 11 7 13 15 8 7 6 2 51 TY: 35 2 29 38 25 29 15 10 9 10 5 2 2 3 2 3 2 12 AC: 8 71 25 24 23 37 21 11 7 2 2 1 3 1 1 0 0 1 AY: 118 77 25 5 5 1 0 0 0 0 0 0 0 0 0 0 0 0 CY: 132 65 25 4 1 3 1 0 0 0 0 0 0 0 0 0 0 1 Total 323 271 108 72 64 89 60 53 47 41 25 28 30 28 18 17 9 124 Total number of obs: 1407 Average SNR: 32.8 Distribution of S-band SNRs, for each baseline SNR: 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 >> TA: 29 9 0 0 5 8 20 29 24 15 7 9 14 10 4 1 3 51 TC: 30 17 0 2 14 12 23 25 14 11 13 6 11 5 6 3 7 36 TY: 27 7 0 0 2 9 7 16 28 21 17 9 12 6 6 13 1 52 AC: 18 52 15 24 30 25 25 10 10 4 6 6 2 1 0 0 0 10 AY: 9 48 69 37 21 11 7 0 2 12 2 0 0 0 0 1 1 12 CY: 15 77 53 34 16 9 1 4 8 2 0 1 1 0 1 0 0 7 Total 128 210 137 97 88 74 83 84 86 65 45 31 40 22 17 18 12 168 Total number of obs: 1405 Average SNR: 47.0