GTAC Observation Log 1. Date : 02/12/2020 2. Observation Sr. No. : 12631 3. Observer : Poonam Chandra, Ayan Biswas, Sonalika Purkayastha, Nayana AJ, Roger Chevalier, Keiichi Maeda, Peter Brown, Alak Ray 4. Observer\'s Email : poonam@ncra.tifr.res.in, ayan.scc2@gmail.com, spurkayastha@ncra.tifr.res.in, nayan89deva@gmail.com, rac5x@virginia.edu, keiichi.maeda@kusastro.kyoto-u.ac.jp, grbpeter@yahoo.com, akr@tifr.res.in 5. Project Name : Understanding young supernovae interacting with their progenitor winds with the aid of low frequency observations 6. Project Code : 39_078 7. Operator(s) : Deepak, Navnath, Rupsing 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata/02dec/39_078_02dec2020_gsb.lta, /gsbifrdata1/02dec/39_078_02dec2020_gsb.lta, /gwbifrdata/02dec/39_078_02dec2020_gwb.lta, /gwbifrdata1/02dec/39_078_02dec2020_gwb.lta 10. LogFlag File : ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1409 MHz ,RF2 : 1409 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1460 MHz, ILO2 : 1460MHz , 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) : 1409 1409 1460 1460 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :23 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C05 : Servo problem. C08 : FPS problem. E06 : FPS porblem. S01 : No fringe. S02 : Servo problem. S04 : Feed jam. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 02 Dec 2020 06:00:00 - 02 Dec 2020 08:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :23 37. RFI Status : 38. Comments (During Observations) : ---------------------------------------------------------------------- 06:40 : Setup done 06:44 : Started scan 3C286 ---------------------------------------------------------------------- 07:00 : After reseting GAB w01,W02 and W04 started fringin in GWB. 07:20 : Started scan on 3C286. 07:45 : Noticed pointing offsets were not updated, also it was showing large offsets in elevation. ----------------------------------------------------------------------- 07:48 : Started command file ----------------------------------------------------------------------- 08:00 : Observation stopped.