GTAC Observation Log 1. Date : 13/12/2018 2. Observation Sr. No. : 10725 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) : Rupsing, Surender 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata1/13dec/35_065_13dec2018_gsb.lta, /gwbifrdata1/13dec/35_065_13dec2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/35_065.FLAGS 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 : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 591 591 540 540 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C13 : : ABC time-out. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 13 Dec 2018 18:00:00 - 13 Dec 2018 20:11:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :29 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 : 128 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- ----------------------------------------------------------------------- 18:13:33 : Started scan on 3C48 for ~ 6.30823 min. 18:33:21 : Started scan on J2131-1207 for ~ 2.44947 min. 18:41:23 : Started scan on GRB181201A for ~ 15.0324 min. 19:12:20 : Started scan on J2131-1207 for ~ 2.48303 min. 19:20:30 : Started scan on GRB181201A for ~ 14.9653 min. 19:52:53 : Started scan on J2131-1207 for ~ 2.48303 min. 20:03:24 : Started scan on 3C48 for ~ 7.48263 min. 20:11:00 : Stopped scan and observing session over. -----------------------------------------------------------------------