GTAC Observation Log 1. Date : 14/12/2020 2. Observation Sr. No. : 12678 3. Observer : Barnali Das, Poonam Chandra, Wade, Matthew Shultz 4. Observer\'s Email : barnali@ncra.tifr.res.in, poonam@ncra.tifr.res.in, marmottecam@yahoo.ca, matt.shultz@gmail.com 5. Project Name : Searching for coherent radio emission from hot magnetic stars 6. Project Code : 39_053 7. Operator(s) : Shriram 8. Command File : /data1/gtac/cmd/39_053/14dec2020/obs.py 9. LTA File : /gsbifrdata1/14dec/39_053_14dec2020_gsb.lta, /gwbifrdata1/14dec/39_053_14dec2020_gwb.lta 10. LogFlag File : /odisk/online1/logflags/39_061.FLAGS.7, /odisk/online1/logflags/39_061.FLAGS.6 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 : 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 : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C00 : Feed jammed. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 14 Dec 2020 08:00:00 - 14 Dec 2020 13:10:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :25 37. RFI Status : 38. Comments (During Observations) : ----------GSB settings--------------------------------- GSB_LTA,8 GSB_CHAN_NUM,0:255:1 GSB_ACQ_BW,33.333333 GSB_FSTOP,1 GSB_ENV,1 GSB_HOSTS,0 GSB_STOKES,2 GSB_CNTRL,1 GSB_FINAL_BW,0 GSB_BEAM_1,0:1 GSB_BEAM_2,0:1 GSB_GAINEQ,1 GSB_CD_MODE,0 GSB_BB_LO,149000000.0:156000000.0 GSB_CHAN_MAX,256 GSB_MODE,0 --------------------------------------------------------------- ---------------GWB settings---------------------- GPU_FSTOP,1 GPU_PFB,0 GPU_FILRFI,0 GPU_CNTRL,1 GPU_PFB_TAPS,16 GPU_CHAN_NUM,0:4095:1 GPU_BEAM_S,0 GPU_DDC,0 GPU_GAINEQ,1 GPU_EDGE_FRQ,0 GPU_BM_INT,8 GPU_BEAM_3,0:1 GPU_BEAM_2,0:1 GPU_BEAM_1,0:1 GPU_CHAN_MAX,4096 GPU_BEAM_4,0:1 GPU_ENV,1 GPU_HOSTS,2 GPU_MODE,0 GPU_STOKES,2 GPU_TPA,0 GPU_VLT_BIT,8 GPU_LTA,4 GPU_BEAM_BIT,16 GPU_FINAL_BW,1 GPU_ACQ_BW,400.0000 GPU_BITS,4 ------------------------------------------------------------------------- 08:00 : Started settings 08:25 : Power equalized on 3C286. 08:30 : Started scan on 3C286 ~10 min 08:41- 08:52 : Slewing to phase cal 08:53 : Started command file, \'/data1/gtac/cmd/39_053/14dec2020/obs.py\' 11:15 : S03 taken for maintenance (structural repair). 11:20 : C14 antenna taken for mechanical work. 12:52 : C05 lmc problem. 12:57 : Command file stopped 13:01 : Started scan on 3C286~ 5min. 13:07 : scan stopped and observing session over