GTAC Observation Log 1. Date : 1/8/2011 2. Observation Sr. No. : 5484 3. Observer : Sandeep Sirothia 4. Observer's Email : sirothia@ncra.tifr.res.in 5. Project Name : The GMRT extra-galactic sky survey at 150 MHz - TGSS 6. Project Code : 20_083 7. Operator(s) : Deepak, Nilesh, Rupsingh, Santaji, 8. Command File : /odisk/gtac/cmd/sirothia/20_083_20110801a.cmd, /odisk/gtac/cmd/sirothia/20_083_20110801b.cmd, 9. LTA File : /gsbifrdata/01aug/20_083_01aug2011.lta, 10. LogFlag File : /odisk/online1/logflags/20_083.FLAGS.29 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) :30 27. Name of Non-Working Antennas (with reason for each) : -- 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 22:00 - 07:00 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : -------------------------------------------------- 2s data file : /gsbifrdata1/01aug/20_083_01aug2011_2s.lta -------------------------------------------------- 22:00 : Started scan on 3c286 for ~45min. 22:34 : W02 servo problem. 22:54 : Started scan on 2219-279 for ~90min. 00:27 : Started command file. '/odisk/gtac/cmd/sirothia/20_083_20110801a.cmd' 02:51 : S02 ABC Time-out. 03:27 : S02 started working. 03:43 : Started next command file. '/odisk/gtac/cmd/sirothia/20_083_20110801b.cmd' 06:00 : for loop# 5, source fields set. Skipped following fields : *gts 'R01D03' *gts 'R01D02' *gts 'R02D02' *gts 'R03D02' 06:30 : Started scan on J0218+4232 for ~15min. 06:47 : Started scan on 3c48. 07:00 : Stopped scan and observation session over.