GTAC Observation Log 1. Date : 15/12/2020 2. Observation Sr. No. : 12682 3. Observer : Kuntal Misra, Martin Blazek, Michael Bremer, ANKUR GHOSH, Luca Izzo, David Alexander Kann, Resmi Lekshmi, Michal Jerzy Michalowski, Daniel Perley, Ruben Sanchez Ramirez, Steve Schulze, Christina Thoene, Antonio deUgartePostigo 4. Observer\'s Email : kuntal@aries.res.in, alf@iaa.es, bremer@iram.fr, ghosh.ankur1994@gmail.com, luca.izzo@gmail.com, kann@iaa.es, l.resmi@gmail.com, mj.michalowski@gmail.com, d.a.perley@ljmu.ac.uk, ruben@sramirez.es, steve.schulze@weizmann.ac.il, cthoene@iaa.es, adeugartepostigo@gmail.com 5. Project Name : Continued monitoring of the brightest radio afterglow detected by GMRT 6. Project Code : 39_038 7. Operator(s) : Sachin 8. Command File : /odisk/gtac/cmd/39_038/obs1.cmd 9. LTA File : /gsbifrdata1/15dec/39_038_lband_15dec2020_gsb.lta, /gwbifrdata/15dec/39_038_lband_15dec2020_10s_gwb.lta 10. LogFlag File : /odisk/online1/logflags/39_078.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1399 MHz ,RF2 : 1399 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1450 MHz, ILO2 : 1450MHz , 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) : 1399 1399 1450 1450 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) : C03 : Mechanical Work. S06 : Feed problem. W02 : Feed problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 15 Dec 2020 02:00:00 - 15 Dec 2020 03:05:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. RFI Status : 38. 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 : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 1450 1450 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 39_038 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 : ON GPU_TPA : From GWB GUI. GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : OFF GPU_PFB_TAPS : 16 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_ENV : RELEASED -------------------------------- 02:07:38 : Started scan on 3C147 for ~ 10.2005 min. 02:27:17 : Started scan on 1130-148 for ~ 5.01079 min. 02:33:02 : Started scan on GRB171205A for ~ 26.6646 min. 03:01:16 : Started scan on 1130-148 for ~ 4.11601 min. 03:05 : Closed observation session.