Tsukuba Correlator Report for D10240 OBSTIME 2010/08/28 DOY 240 CORRTIME 2010/08/30 EXPORT DONE CORRELATOR_NOTES ---------------- Scan at 240/08:16 produced a zero code on S band. The source being observed was NGC6251. Scan at 240/08:20 produced a zero code on S band. The source being observed was 1204+124. Pcal amplitudes and phases on X-band were not stable in Kb. QUALITY SUMMARY --------------- Qcode % of Total % of Correlated scans scans 5-9 94.7 % 94.7 % 0 5.3 % 5.3 % 4-1,D,G,N 0 % 0 % Removed 0 % STATION_NOTES ------------- KASHIM34(O-Kb): Low pcal amplitude on XR7U caused D codes in scan 241/07:35,07:48,07:51,08:08,08:09, 08:11,08:24 and 08:28. Low pcal amplitude on XR8U caused D codes in scan 241/07:39,07:45,07:57,08:02 and 08:06. Manual pcal in fringe fitting. WETTZELL(V-Wz): OK. Transfer rate: 256 Mbit/s WETTZELL data were real-time transferred to Tsukuba by data transfer software "VDIF/SUDP". CLOCKS ---------- Clocks: KASHIM34 Station fmout-gps used rate Comments [usec] [usec] [sec/sec] Kb 0.000 0.000 -3.367E-12 Reference Wz -20.796 -0.588 2.059E-12 Date: 2010/08/28 STATISTICS ---------- PROCESS SUMMARY BY BASELINE/FREQUENCY Base 0 1 2 3 4 5 6 7 8 9 D G N - Tot OV X 0 0 0 0 0 0 0 2 10 7 0 0 0 0 19 OV S 2 0 0 0 0 0 0 0 2 15 0 0 0 0 19 Column Totals, numbers then percentages 2 0 0 0 0 0 0 2 12 22 0 0 0 0 38 % 5.3 0.0 0.0 0.0 0.0 0.0 0.0 --> --> 94.7 0.0 0.0 0.0 0.0100.0 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: OV Total Obs: 19 Error : 2 % : 10.5 (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 >> OV: 0 0 1 1 4 2 1 0 0 2 0 4 1 0 1 0 0 2 Total 0 0 1 1 4 2 1 0 0 2 0 4 1 0 1 0 0 2 Total number of obs: 19 Average SNR: 59.1 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 >> OV: 1 4 4 0 1 4 2 0 1 0 0 1 0 0 0 0 0 1 Total 1 4 4 0 1 4 2 0 1 0 0 1 0 0 0 0 0 1 Total number of obs: 19 Average SNR: 27.3 MEAN RATIOS = Observed SNR / Predicted SNR ...by baseline, over all sources: bl X n S n OV 1.25 19 0.81 17 -------------------------------- MUKAI,Yasuko Geospatial Information Authority of Japan / AES Co.,Ltd. mukai@gsi.go.jp