GTAC Observation Log 1. Date : 21/05/2017 2. Observation Sr. No. : 9414 3. Observer : Poonam Chandra, Nayana AJ, Dipankar Bhattacharya 4. Observer's Email : poonam@ncra.tifr.res.in, nayan89deva@gmail.com, dipankar@iucaa.in 5. Project Name : Request for continued GMRT Monitoring of radio bright GRB 161219B 6. Project Code : 32_067 7. Operator(s) : Nilesh, Shilpa 8. Command File : /odisk/gtac/cmd/poonam/u32_067/obs.cmd 9. LTA File : /gsbifrdata1/21may/32_067_21may2017.lta, /gwbifrdata1/21may/32_067_21may2017_gwb.lta 10. LogFlag File : /odisk/online1/logflags/32_075.FLAGS.12 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 : 540MHz , 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) : 591 591 540 540 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C14 : Structural repair. W02 : No fringe in GWB and 175pol no fringe at GSB. W03 : Low fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 21 May 2017 10:20:00 - 21 May 2017 14:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :26 37. Comments (During Observations) : ------------GWB Setting---------------------------------------------------- GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_RF : 750 750 GCODE4 : 32_067 --------------------------------------------------------------------------- 10:20 : Started settings. 10:44 : Started scan on 3C147 for 15min. 11:03 : '/odisk/gtac/cmd/poonam/u32_067/obs.cmd' command file started. 11:42 : E06 : Servo problem - Not releasing brakes. 13:34 : Stopped scan and command file. 13:35 : Started scan on phase cal for ~ 5 min. 13:45 : Started scan on 3C147 for ~ 15 min. 14:00 : Stopped scan and observation closed.