GTAC Observation Log 1. Date : 02/02/2021 2. Observation Sr. No. : 12863 3. Observer : Sonalika Purkayastha, Poonam Chandra 4. Observer\'s Email : spurkayastha@ncra.tifr.res.in, poonam@ncra.tifr.res.in 5. Project Name : Follow-up Observations of Three Gamma Ray Bursts at uGMRT Frequencies 6. Project Code : 39_047 7. Operator(s) : Sachin 8. Command File : /odisk/gtac/cmd/obs.cmd 9. LTA File : /gsbifrdata1/02feb/39_047_b4_02feb2021_gsb.lta.1, /gsbifrdata1/02feb/39_047_b4_02feb2021_gsb.lta, /gwbifrdata2/02feb/39_047_02feb2021_b4_gwb.lta 10. LogFlag File : 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/TGC 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 : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 02 Feb 2021 09:00:00 - 02 Feb 2021 11:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :29 37. RFI Status : 38. Comments (During Observations) : 09:20:07 : Started scan on 3C286 for ~ 9.66367 min. 09:30 : Stopped scan on 3C286. Changed track from inner to outer due to source transit. 09:45 : Started command file. 11:10 : Closed observation session after taking phase cal.