GTAC Observation Log 1. Date : 23/5/2014 2. Observation Sr. No. : 7122 3. Observer : Sayan Chakraborti,Naveen Yadav,Alak Ray,Edo Berger,Alicia Margarita Soderberg 4. Observer's Email : schakraborti@fas.harvard.edu,nyadav@tifr.res.in,akr@tifr.res.in,eberger@cfa.harvard.edu,asoderberg@cfa.harvard.edu 5. Project Name : Swift J1644+57: A GMRT View of the Birth of a Relativistic Outflow from a Supermassive Black Hole 6. Project Code : 26_068 7. Operator(s) : Deepak,Navanath,Pramod, 8. Command File : /odisk/gtac/cmd/sayan/26_068/obs1.cmd 9. LTA File : /gsbifrdata/23may/26_068_23may2014.lta, 10. LogFlag File : /odisk/online1/logflags/26_068.FLAGS.1, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1261 MHz ,RF2 : 1261 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1210 MHz, ILO2 : 1210 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. GSB CTRL : ONLINE 17. GSB Fstop : ON 18. GAIN EQ : ON 19. Stokes : TotIntensity 20. Beam - 1 : OFF 21. Beam - 2 : OFF 22. ACQ BW : 33.33 MHz 23. Final BW : 33.333333 MHz; Step # 0 24. Maximum Channels : 512 25. Channel Numbers : 0:511:1 26. LO5 -1 : 149.00 27. LO5 -2 : 156.00 28. Frequency Parameters (TPA) : 1261 1261 1210 1210 51 51. 29. Integration Time : 16.106112 Sec. 30. No of Antennas Working(Fringing) at the begining :29 31. Name of Non-Working Antennas (with reason for each) : S02 : Frequently applying brakes. 32. Note for Backup : 33. Start and End Time of Obs.(IST): 20:40 - 05:06 34. ONLINE Machine : Shivneri 35. No of Antennas Working(Fringing) at the end :29 36. Comments (During Observations) : 20:40 : Started set-up. 20:43 : Started scan on 3C147 for 10min. 21:05 : Started cmd file. /odisk/gtac/cmd/sayan/26_068/obs1.cmd 04:45 : Stopped command file. 04:58 : Started scan on 3C48. 05:06 : Stopped scan and observation session is over.