GTAC Observation Log 1. Date : 13/7/2011 2. Observation Sr. No. : 5444 3. Observer : Sandeep Sirothia,Ishwar Chandra 4. Observer's Email : sirothia@ncra.tifr.res.in,ishwar@ncra.tifr.res.in 5. Project Name : The GMRT extra-galactic sky survey at 150 MHz 6. Project Code : 20_083 7. Operator(s) : Navanath, Nilesh, 8. Command File : /odisk/gtac/cmd/sirothia/20_083_20110713loop1.cmd, /odisk/gtac/cmd/sirothia/20_083_20110713a.cmd 9. LTA File : /gsbifrdata/13jul/20_083_13jul2011.lta, /gsbifrdata/13jul/20_083_13jul2011.lta.1, 10. LogFlag File : /odisk/online1/logflags/20_083.FLAGS.24, /odisk/online1/logflags/20_083.FLAGS.25, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218 MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 16 MHz,ON, IF-CH2 : 10+12 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Full_Polar 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 16 MHz 21. Maximum Channels : 256 22. IFBW (MHz) : LO5 (KHz) : 16:138000-167000 23. Final Bandwidth (MHz): OFF MHz; Step # 0 24. Frequency Parameters (TPA) : 156 156 218 218 62 62. 25. Integration Time : 32.212 Sec. 26. No of Antennas Working(Fringing) :25 27. Name of Non-Working Antennas (with reason for each) : S03,S04,S06 : ABC time out. C09 : Mechanical maintenance. C01 : Servo Maintenance. E02 : freq applying brakes 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 17:00 - 06:17 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : 2s data files :- /gsbifrdata1/13jul/20_083_13jul2011_2s.lta, /gsbifrdata1/13jul/20_083_13jul2011_2s.lta.1, -------------------------------------------------- 17:00 : Started settings. 17:20 : Started scan on 3c286 ~20min. 17:40 : Started command file. '/odisk/gtac/cmd/sirothia/20_083_20110713loop1.cmd', 18:44 : S-arm (S03,S04,S06) started working. 18:53 : Restarted GSB. 18:58 : Started scan on 3c286 ~6min. 19:06 : Restarted command file. '/odisk/gtac/cmd/sirothia/20_083_20110713loop1.cmd', 05:41 : Started scan on J cal. 05:57 : Started scan on 3C48 for 15min. 06:17 : Observing session stopped.