Tsukuba Correlator Report for K09263 OBSTIME 2009/09/20 DOY 263 CORRTIME 2009/09/20 EXPORT DONE CORRELATOR_NOTES ---------------- No Ts data in 263/08:26 and 08/28 in SR5U, SR6U, XR1L and XR8L due to a trouble of K5system. Scan at 263/08:03 produced a zero code on S band. The source being observed was 1307+121. The X-band SNRs were small, because the X-band noise of TSUKUB32 was large. QUALITY SUMMARY --------------- Qcode % of Total % of Correlated scans scans 5-9 93.1 % 93.1 % 0 1.4 % 1.4 % 4-1,D,G,N 5.6 % 5.6 % Removed 0 % STATION_NOTES ------------- TSUKUB32(T-Ts): Missed 2 scans (263/08:26 and 08/28) in SR5U, SR6U, XR1L and XR8L due to a trouble of k5system. Low pcal amplitude in XR8U and XR8L caused D-code in 263/07:33. Manual pcal in fringe fitting. The X-band noise was large, because the X-LNA cryogenic system was in bad condition. WETTZELL(V-Wz): OK. Transfer rate: 200 Mbit/s WETTZELL data were transferred to Tsukuba by data transfer protocol "Tsunami". CLOCKS ---------- Clocks: Tsukuba Station fmout-gps used rate Comments [usec] [usec] [sec/sec] Ts 0.514 0.514 1.102E-12 Reference Wz -19.955 -21.066 5.135E-12 Date: 2009/09/20 STATISTICS ---------- PROCESS SUMMARY BY BASELINE/FREQUENCY Base 0 1 2 3 4 5 6 7 8 9 D G N - Tot TV X 0 0 0 0 0 0 0 2 0 32 0 0 2 0 36 TV S 1 0 0 0 0 0 0 0 3 30 0 0 2 0 36 Column Totals, numbers then percentages 1 0 0 0 0 0 0 2 3 62 0 0 4 0 72 % 1.3 .0 .0 .0 .0 .0 .0 --> --> 93.1 .0 .0 5.6 .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: TV Total Obs: 36 Error : 3 % : 8.3 (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 >> TV: 0 1 1 0 3 1 6 3 2 2 3 0 2 1 0 1 0 8 Total 0 1 1 0 3 1 6 3 2 2 3 0 2 1 0 1 0 8 Total number of obs: 34 Average SNR: 62.4 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 >> TV: 0 1 2 2 6 6 1 0 5 1 4 2 0 0 0 1 1 2 Total 0 1 2 2 6 6 1 0 5 1 4 2 0 0 0 1 1 2 Total number of obs: 34 Average SNR: 39.6 MEAN RATIOS = Observed SNR / Predicted SNR ...by baseline, over all sources: bl X n S n TV 0.68 33 0.87 33 -------------------------------- Kentarou,Nozawa Geographical Survey Institute / AES Co.,Ltd. nozawa@gsi.go.jp