GTAC Observation Log 1. Date : 22/11/2019 2. Observation Sr. No. : 11609 3. Observer : Joseph Russell Callingham, harish k vedantham, Shimwell, Ivey Davis 4. Observer's Email : callingham@astron.nl, vedantham@astron.nl, shimwell@strw.leidenuniv.nl, idavis97@unm.edu 5. Project Name : Confirming the first radio detections of exoplanets 6. Project Code : 37_041 7. Operator(s) : Nilesh 8. Command File : /odisk/gtac/cmd/37_041/22nov19/obs_22nov19.cmd 9. LTA File : /gwbifrdata1/22nov/37_041_22nov2019_gwb.lta.1, /gwbifrdata1/22nov/37_041_22nov2019_gwb.lta 10. LogFlag File : /odisk/online1/logflags/37_041.FLAGS.10 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218MHz , IVLO1 : 62 MHz, IVLO2 : 62 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 : 16.666666 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 156 156 218 218 62 62 30. Integration Time : 4.0265 Sec 31. No of Antennas Working(Fringing) at the beginning :25 32. Name of Non-Working Antennas (with reason for each) : C04 : Mechanical work. C09 : No Fringe. S06 : No Fringe. W03 : No Fringe. C12 : CH-2 No fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 22 Nov 2019 04:30:00 - 22 Nov 2019 07:05:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :25 37. RFI Status :Very strong RFI at BAND#2 during observations. 38. Comments (During Observations) : 04:30 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 8 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 8192 GPU_CHAN_NUM : 0:8191:1 GPU_STOKES : Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF4 : 300 300 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 37_041 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 : 4 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- 04:56:50 : Started scan on 3C147 for ~ 15.3344 min. 05:12 : Started command file /data1/gtac/cmd/37_041/22nov2019/obs_22nov19.py 05:18 : Problem in adding source catalog lists to TGC, so it restarted scan on 3C147. This problem repeated 4-5 time even after adding catalog manually. and Failed to get correct source positions as per command file. 05:40 : ANTENNAS and SYSTEM CONTROL SWITCHED TO ONLINE from TGC. 05:50 : Started observations via ONLINE. 05:52 : Started command file. /odisk/gtac/cmd/37_041/22nov19/obs_22nov19.cmd 07:05 : Observation session over.