GTAC Observation Log 1. Date : 30/12/2018 2. Observation Sr. No. : 10770 3. Observer : Tanmoy Laskar, Raffaella Margutti, Kate D Alexander 4. Observer's Email : tanmoylaskar@gmail.com, rafmargutti@gmail.com, kalexander@cfa.harvard.edu 5. Project Name : Gamma-ray Bursts: Explosion Physics and Probes of Scintillation 6. Project Code : 35_065 7. Operator(s) : Surender 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata1/30dec/35_065_30dec2018_gsb.lta, /gwbifrdata1/30dec/35_065_30dec2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/35_040.FLAGS.5 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 : 4.0265 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C01 : : Taken for Mech Work. W04 : : Strong RFI. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 30 Dec 2018 16:00:00 - 30 Dec 2018 18:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :30 37. Comments (During Observations) : ------------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 : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 35_065 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 : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- 16:00:00 : Started set-up. 16:12:44 : Started scan on J2131-1207 for ~ 5.03316 min. 16:21:00 : Started scan on GRB181201A for ~ 30.0647 min. 16:52:14 : Started scan on J2131-1207 for ~ 4.96605 min. 17:00:27 : Started scan on GRB181201A for ~ 36.4401 min. 17:37:00 : C01 & W04 Released for observation. 17:40:18 : Started scan on J2131-1207 for ~ 4.96605 min. 17:52:06 : Started scan on 3C48 for ~ 11.073 min. 18:00:00 : Stopped scan and observing session over.