GTAC Observation Log 1. Date : 29/6/2011 2. Observation Sr. No. : 5421 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 - TGSS 6. Project Code : 18_031 7. Operator(s) : Navanath, Nilesh, Sachin, Santaji, Shilpa 8. Command File : /odisk/gtac/cmd/sirothia/20_083_20110629a.cmd, /odisk/gtac/cmd/sirothia/20_083_20110629b.cmd 9. LTA File : /gsbifrdata/29jun/18_031_29jun2011.lta, /gsbifrdata/29jun/18_031_29jun2011.lta.1 10. LogFlag File : /odisk/online1/logflags/18_043.FLAGS.4 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 : 16.106 Sec. 26. No of Antennas Working(Fringing) :29 27. Name of Non-Working Antennas (with reason for each) : C02,C05 : 175pol no fringe. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 17:20 - 08:00 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : 2S Data File : /gsbifrdata1/29jun/18_031_29jun2011_2s.lta, /gsbifrdata1/29jun/18_031_29jun2011_2s.lta.1 ----------------------------------------------------------- 17:20 : Started settings. 17:37 : Started scan on 3C286. 17:54 : Stopped scan. 17:56 : '/odisk/gtac/cmd/sirothia/20_083_20110629a.cmd' command file started. 18:11 : C02 and C05 started working, stopped command file, halted GSB. Restarted GSB. 18:17 : Started scan on 3C286. 18:23 : Stopped scan. 18:25 : '/odisk/gtac/cmd/sirothia/20_083_20110629a.cmd' command file started. 00:10 : S02 ABC reset. 00:16 : S02 started working. 00:35 : Started next command file. '/odisk/gtac/cmd/sirothia/20_083_20110629b.cmd' 06:55 : Stopped command file. 07:01 : Started scan on J calibrator. 07:30 : Stopped scan on J calibrator. 07:31 : Started scan on 3C48. 08:00 : Stopped scan on 3C48 and closed observation session.