GTAC Observation Log 1. Date : 02/01/2021 2. Observation Sr. No. : 12757 3. Observer : ARUN KUMAR NAIDU, Shriharsh P. Tendulkar, Yashwant Gupta, Biny Sebastian, Sushma Kurapati 4. Observer\'s Email : arun@ncra.tifr.res.in, shriharsh@physics.mcgill.ca, ygupta@ncra.tifr.res.in, biny@ncra.tifr.res.in, sushma@ncra.tifr.res.in 5. Project Name : The uGMRT follow-up of CHIME Repeaters. 6. Project Code : 39_100 7. Operator(s) : Nilesh, Shilpa, Shriram 8. Command File : /odisk/gtac/cmd/39_100/obs1_2jan.cmd 9. LTA File : /gsbifrdata1/02jan/39_100_02jan2021_gsb.lta.1, /gsbifrdata1/02jan/39_100_02jan2021_gsb.lta, /gwbifrdata2/02jan/39_100_02jan2021_gwb.lta.2, /gwbifrdata2/02jan/39_100_02jan2021_gwb.lta.1, /gwbifrdata2/02jan/39_100_02jan2021_gwb.lta 10. LogFlag File : /odisk/online1/logflags/39_100.FLAGS.1 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 : 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 : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. E02 : Painting 33. Note for Backup : 34. Start and End Time of Obs.(IST): 02 Jan 2021 17:00:00 - 02 Jan 2021 21:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 1 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 39_100 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : OFF GPU_BEAM_3 : IA GPU_BEAM_4 : OFF GPU_BM_INT : 16 GPU_GAINEQ : ON GPU_TPA : From GWB GUI. GPU_BITS : 8 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 -------------------------------- 17:10 : Phasing on 3C48 and power equalized at 150 counts 17:18 : Started scan on 3C48 for ~ 10.715 min. 17:30 : Started command file, \'/odisk/gtac/cmd/39_100/obs1_2jan.cmd\' Due to network issues command are taking more time for execution 18:00 : E02 started working. 18:05 : After confirming with user Arun Bm int requirement was chnged to 16 from 64. and restarted correlator. 18:15 : Restarted command file. CDP beam data recording commands failed. tried to restart manually. 19:05 : GWB Acq got killed. 19:15 : Restarted GWB and GSB correlators and started command file. 19:50 : GWB Acq got killed. Network issue. Observation suspended.