GTAC Observation Log 1. Date : 11/02/2016 2. Observation Sr. No. : 8402 3. Observer : Poonam Chandra 4. Observer's Email : poonam@ncra.tifr.res.in 5. Project Name : GMRT monitoring of GRB160131A\\r\\n 6. Project Code : DDTB206 7. Operator(s) : Deepak, Pramod, Rupsing 8. Command File : /odisk/gtac/cmd/poonam/ddtb206/obs.cmd 9. LTA File : /gsbifrdata1/10feb/ddtb206_10feb2016.lta 10. LogFlag File : /odisk/online1/logflags/DDTB206.FLAGS.4, /odisk/online1/logflags/DDTB206.FLAGS.3, /odisk/online1/logflags/DDTB206.FLAGS.2 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1409 MHz ,RF2 : 1409 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1460 MHz, ILO2 : 1460MHz , 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 : 33.333333 MHz; Step # 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 1409 1409 1460 1460 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :25 32. Name of Non-Working Antennas (with reason for each) : C08 : Taken for BLDC E04 : Taken for CST painting C06 : Servo problem. E06 : Low fringe. W02 : No fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 10 Feb 2016 22:00:00 - 11 Feb 2016 01:11:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :26 37. Comments (During Observations) : 22:00 : Started set up. 22:00 to 23:00 : When lower LO ie. 1320MHz set, antennas were not fringing.Hence set up higher LO ie. 1460MHz and restarted GSB. It has taken time to find the problem. 23:07 : Started scan on 3C147. 23:17 : Stopped scan and started command file. '/odisk/gtac/cmd/poonam/ddtb206/obs.cmd' 23:17 : C06 Servo problem solved. 00:57 : Stopped command file. 01:01 : Started scan on 3C147. 01:11 : Stooped scan and observation session over.