GTAC Observation Log 1. Date : 09/08/2017 2. Observation Sr. No. : 9655 3. Observer : Poonam Chandra 4. Observer's Email : poonam@ncra.tifr.res.in 5. Project Name : Request for GMRT observations of a radio bright short gamma-ray burst, GRB 170728B\r\n 6. Project Code : DDTB283 7. Operator(s) : Rupsing, Shilpa 8. Command File : /odisk/gtac/cmd/poonam/ddtb283/obs.cmd 9. LTA File : /gsbifrdata1/09aug/ddtb283_09aug2017.lta 10. LogFlag File : /odisk/online1/logflags/DDTB283.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1371 MHz ,RF2 : 1371 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1320 MHz, ILO2 : 1320MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 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 : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 1371 1371 1320 1320 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : E03 : Maintenance. W04 : Callsheet work. S04 : Mechanical work. C09 : 175pol low fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 09 Aug 2017 18:45:00 - 09 Aug 2017 22:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :26 37. Comments (During Observations) : 18:45 : Started settings. 19:03 : Started scan on 3C286 for 10min. 19:16 : '/odisk/gtac/cmd/poonam/ddtb283/obs.cmd' command file started. 21:45 : Stopped command file. 21:47 : Started scan on 3C286. 22:00 : Stopped scan and observing session over.