GTAC Observation Log 1. Date : 10/07/2020 2. Observation Sr. No. : 12200 3. Observer : Peter Brown, Alak Ray, Poonam Chandra, Nayana AJ, Roger Chevalier, Keiichi Maeda, Claes Fransson 4. Observer\'s Email : grbpeter@yahoo.com, akr@tifr.res.in, poonam@ncra.tifr.res.in, nayan89deva@gmail.com, rac5x@virginia.edu, keiichi.maeda@kusastro.kyoto-u.ac.jp, claes@astro.su.se 5. Project Name : Understanding young supernovae interacting with their progenitor winds with the aid of low frequency observations 6. Project Code : 38_103 7. Operator(s) : Manisha, Nilesh, Shilpa, Shriram 8. Command File : /odisk/gtac/cmd/38_103/38_103_05.cmd, /odisk/gtac/cmd/38_103/38_103_07.cmd, /odisk/gtac/cmd/38_103/38_103_09.cmd 9. LTA File : /gsbifrdata1/10jul/38_103_10jul2020_0900_gsb.lta, /gsbifrdata1/10jul/38_103_10jul2020_0500_gsb.lta, /gwbifrdata2/10jul/38_103_10jul2020_0900_gwb.lta, /gwbifrdata2/10jul/38_103_10jul2020_0500_gwb.lta 10. LogFlag File : /odisk/online1/logflags/38_103.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 :26 32. Name of Non-Working Antennas (with reason for each) : C03 : Maintenance S06 : No fringe W06 : GAB problem C06 : 130 pol no fringe 33. Note for Backup : 34. Start and End Time of Obs.(IST): 10 Jul 2020 05:00:00 - 10 Jul 2020 11:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :26 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 : 38_103 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 -------------------------------- 04:45 : Started settings. 05:11 : Started scan on 3C48 ~ 8min 05:27 : Started command file \'/odisk/gtac/cmd/38_103/38_103_05.cmd\' 05:32 : satellite observed on 2020GCV. 06:46 : command file stopped. 06:50 : Started scan on 3C48 06:54 : ONLINE problem, stopped communication with all antennas. 07:04 : Established communication with antennas. 07:05 : Restarted scan on 3C48. 07:18 : Started command file. /odisk/gtac/cmd/38_103/38_103_07.cmd 08:31 : ONLINE problem, stopped communication with all antennas. while trying to re establish connection ONLINE crashed. Needs to restart ONLINE as well correlator processes. 09:08 : Restarted ONLINE, still problem persists intermittently. 09:16 : Started GSB and GWB. 09:20 : Started scan on 3C48. 09:32 : Started command file. /odisk/gtac/cmd/38_103/38_103_09.cmd 10:53 : Stopped command file. 10:55 : Started scan on 3C48. 11:06 : scan stopped and observation closed.