JADE-0808(JD0808) Correlation report Tsukuba VLBI Correlator [Geographical Survey Institute, Japan] Observed: 28 Aug., to 29 Aug., 2008 doy241/02:00 - 242/01:55 Correlated: 3 Sep., 2008 to 11 Sep., 2008 DB Exported: done Station Notes: -------------- TSUKUB32(T-Ts): Lost 30 scans (241/18:24-20:31) due to the power failure by the thunderstorm. Low pcal amplitude in X5-8ch causing D code in scan 241/20:34. Low pcal amplitude in S7ch causing D codes in scan 241/07:58,08:54 and 21:16. Manual pcal in fringe fitting. Recorded on K5(VSSP32). CHICHI10(C-Cc): Low pcal amplitude in X-band in all scans. Manual pcal in fringe fitting. Recorded on K5. SINTOTU3(J-S3): The fmout-gps vlaue is not correct since JD0807. Recorded on K5. PF=1.73 Station Clocks -------------- Clocks: GSI Station fmout-gps Used rate Comments [usec] [usec] [sec/sec] Ts 0.142 0.142 -0.185E-12 Reference Cc 0.345 -0.701 -0.809E-12 S3 39.681 -11.598 -0.152E-12 Date: 2008/8/28 - comment: correlation package apri_calc (NICT, Ver.2008-02-19) for calculating a prior delay&rate. cor (NICT, Ver.2008-07-15) for correlation. komb (NICT, Ver.2008-02-19) for bandwidth synthesis. Statistics ---------- PROCESS SUMMARY BY BASELINE/FREQUENCY Base 0 1 2 3 4 5 6 7 8 9 D G N - Tot TC X 11 0 0 0 0 0 0 1 5 269 0 0 21 6 313 TC S 4 0 1 1 2 15 9 28 99 127 0 0 21 6 313 TJ X 32 0 0 0 0 0 0 6 3 228 0 0 13 6 288 TJ S 6 0 1 0 0 0 1 1 10 250 0 0 13 6 288 Column Totals, numbers then percentages 53 0 2 1 2 15 10 36 117 874 0 0 68 24 1202 % 4.4 .0 .2 .1 .2 1.2 .8 --> --> 85.4 .0 .0 5.7 2.0100.0 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: TC TJ Total Obs: 313 288 Error : 42 52 % : 13.4 18.1 (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 >> TC: 3 20 29 35 62 31 27 10 10 13 4 2 5 4 1 4 2 24 TJ: 4 71 79 48 29 19 5 3 1 0 2 0 1 1 1 0 1 4 Total 7 91 108 83 91 50 32 13 11 13 6 2 6 5 2 4 3 28 Total number of obs: 555 Average SNR: 25.5 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 >> TC: 4 0 23 94 54 30 18 12 6 5 1 8 10 6 6 5 1 3 TJ: 4 19 112 87 26 14 1 4 1 0 0 1 0 0 0 0 0 0 Total 8 19 135 181 80 44 19 16 7 5 1 9 10 6 6 5 1 3 Total number of obs: 555 Average SNR: 22.5 --------------------------------- Kentarou Nozawa G. S. I. /Advanced Engineering Services Co., Ltd. aes@gsi.go.jp