GTAC Observation Log 1. Date : 15/6/2013 2. Observation Sr. No. : 6551 3. Observer : Dharam Vir Lal,Reinout van Weeren 4. Observer's Email : dharam@ncra.tifr.res.in,rvanweeren@cfa.harvard.edu 5. Project Name : GMRT distant radio halo and relic survey 6. Project Code : 24_007 7. Operator(s) : Nilesh, Pramod, Sachin, Santaji, Shilpa, 8. Command File : /odisk/gtac/cmd/dharam/24_007_14jun13.cmd 9. LTA File : /gsbifrdata/15jun/24_007_15jun2013.lta, /gsbifrdata/15jun/24_007_15jun2013.lta.1, /gsbifrdata/15jun/24_007_15jun2013.lta.2, 10. LogFlag File : /odisk/online1/logflags/24_007.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540 MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Total_Intensity 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 32 MHz 21. Maximum Channels : 256 22. IFBW (MHz) : LO5 (KHz) : 32:149000-156000 23. Final Bandwidth (MHz): OFF MHz; Step # 0 24. Frequency Parameters (TPA) : 591 591 540 540 51 51. 25. Integration Time : 8.053 Sec. 26. No of Antennas Working(Fringing) :28 27. Name of Non-Working Antennas (with reason for each) : C00 : Servo problem. W05 : Servo time out. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 03:00 - 05:22 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : 03:00 : Started set up. 03:16 : Started scan on 3C48. 03:29 : S02 automatically ABC reset. 03:31 : Stopped scan. 03:33 : S02 Started working. 03:33 : Re-started scan on 3C48. 03:50 : Stopped scan on 3C48. 03:54 : Started command file '/odisk/gtac/cmd/dharam/24_007_14jun13.cmd'. 08:50 : S06 ABC time out. 09:08 : W06 ABC Time out. 09:25 : command file stopped. 09:30 : Started scan on 3C48 for 15mins. 09:45 : command file /odisk/gtac/cmd/dharam/24_007_14jun13_2.cmd started. 14:43 : command file stopped. 14:53 : Started scan on 3C147 ~10mins and started following command file. '/odisk/gtac/cmd/dharam/24_007_15jun13_3.cmd' 16:20 : S06 ABC time out vanished and taken for observation. 22:50 : Stopped command file. 22:51 : Started scan on 3C286. 23:55 : C05 started giving servo problem. 04:51 : Source set, stopped command file. 04:54 : Started scan on phase cal. 05:12 : Started scan on 3C48. 05:22 : Stopped scan and closed observation session.