GTAC Observation Log 1. Date : 09/09/2021 2. Observation Sr. No. : 13478 3. Observer : Ayan Biswas, Poonam Chandra 4. Observer\'s Email : ayan.scc2@gmail.com, poonam@ncra.tifr.res.in 5. Project Name : Understanding the Intriguing Radio Emission from the Only Doubly Magnetic Massive Binary Star System Eps Lupi 6. Project Code : ddtC189 7. Operator(s) : Deepak, Nilesh, Sachin 8. Command File : /data1/gtac/cmd/ddtc189/obs_8sep21.py 9. LTA File : /gsbifrdata/08sep/ddtc189_08sep2021_gsb.lta, /gwbifrdata2/08sep/ddtc189_08sep2021_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/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) : 1409 1409 1460 1460 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :25 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C10 : CH#2 Very low fringe (Intermittent RF problems). S06 : Intermittent servo problem. W06 : Low Fringe. W04 : Maintenance. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 08 Sep 2021 14:45:00 - 08 Sep 2021 18:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :26 37. RFI Status : 38. Comments (During Observations) : 14:50 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : -1 -1 GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : DDTC189 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : ON GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_WALSH : OFF GPU_ENV : RELEASED -------------------------------- 15:10 : Started scan on 3C286 for ~ 12 min. 15:28 : Bad scan, antennas not tracking source. 15:32 : Started command file. /data1/gtac/cmd/ddtc189/obs_8sep21.py 16:20 : W04 released for observation. 18:01 : Stopped command file and observation over.