GTAC Observation Log 1. Date : 25/08/2018 2. Observation Sr. No. : 10493 3. Observer : Poonam Chandra, Dipankar Bhattacharya, Nayana AJ, Stephen Bradley Cenko, Alessandra Corsi 4. Observer's Email : poonam@ncra.tifr.res.in, dipankar@iucaa.in, nayan89deva@gmail.com, brad.cenko@nasa.gov, corsi@gwu.edu 5. Project Name : Request for monitoring of radio afterglow of GRB 171205A at uGMRT frequencies 6. Project Code : 34_108 7. Operator(s) : Navnath, Nilesh 8. Command File : /odisk/gtac/cmd/poonam/34_108/25aug-band4/obs.txt 9. LTA File : /gsbifrdata/25aug/34_108_25aug2018_610.lta, /gwbifrdata2/25aug/34_108_25aug2018_gwb.lta. 10. LogFlag File : /odisk/online1/logflags/34_108.FLAGS.6 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 : Full_Stokes 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) : C10 : : Mechanical Work W06 : : Mesh Work W01 : : Feed jam 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 Aug 2018 10:00:00 - 25 Aug 2018 13:02:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 10:00 : Started setup. 10:05:29 : Started scan on 3C147 for ~ 12.0796 min. 10:20:00 : Started cmd file /odisk/gtac/cmd/poonam/34_108/25aug-band4/obs.txt 10:25:14 : Started scan on 1130-148 for ~ 4.96605 min. 10:30:00 : W01 released for observation 10:36:22 : Started scan on GRB171205 for ~ 35.0308 min. 11:12:36 : Started scan on 1130-148 for ~ 4.83183 min. 11:21:00 : Started scan on GRB171205 for ~ 35.4334 min. 11:46:00 : W06 released for observation. 11:57:23 : Started scan on 1130-148 for ~ 4.96605 min. 12:05:43 : Started scan on GRB171205 for ~ 34.8966 min. 12:41:42 : Started scan on 1130-148 for ~ 4.83183 min. 12:53:15 : Started scan on 3C286 for ~ 6.97932 min. 13:00:00 : Observation session over. ----------------------------------------------------------------------- ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 34_108 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 128 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : For 32 inputs GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF --------------------------------