GTAC Observation Log 1. Date : 25/12/2016 2. Observation Sr. No. : 9089 3. Observer : Huib T Intema, Preshanth Jagannathan, Mooley, Dale A Frail 4. Observer's Email : intema@strw.leidenuniv.nl, pjaganna@nrao.edu, kunal.mooley@physics.ox.ac.uk, dfrail@nrao.edu 5. Project Name : Filling the gaps in the 150 MHz GMRT sky survey 6. Project Code : 31_044 7. Operator(s) : Nilesh, Pramod, Sachin 8. Command File : /odisk/gtac/cmd/31_044/24dec16/obs_24dec.cmd 9. LTA File : /gsbifrdata/24dec/31_044_24dec2016.lta 10. LogFlag File : /odisk/online1/logflags/31_044.FLAGS.6, /odisk/online1/logflags/31_044.FLAGS.5 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 : 218MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 16 MHz,ON, IF-CH2 : 4+14 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Full_Stokes 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 16.666666 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 156 156 218 218 62 62 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :30 32. Name of Non-Working Antennas (with reason for each) : S02 : Very strong RFI @ 150 MHz. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 24 Dec 2016 19:30:00 - 25 Dec 2016 03:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 19:35 : Started set up. 19:54 : Started scan on 3C48. 20:04 : Stopped scan and started command file. '/odisk/gtac/cmd/31_044/24dec16/obs_24dec.cmd' 23:05 : S02 very Strong RFI. 01:39 : Skipped sources R13D07 and R13D08 as they sets below horizon. 01:46 : Skipped source R14D07 as it sets below horizon. 02:18 : Stopped command file and started scan on 0521-207 for ~ 10 min. 02:29 : Stopped scan. 02:33 : Started scan on 3C147. 02:55 : Stopped scan and observation closed.