GTAC Observation Log 1. Date : 30/11/2019 2. Observation Sr. No. : 11637 3. Observer : Srikrishna Sekhar, Preshanth Jagannathan, Ruta Kale, Shweta, Ramana Athreya 4. Observer's Email : srikrishna@idia.ac.za, pjaganna@nrao.edu, ruta@ncra.tifr.res.in, ashweta@students.iiserpune.ac.in, rathreya@iiserpune.ac.in 5. Project Name : Measuring the magnetic field structure and polarization properties of merging galaxy cluster A2163 6. Project Code : 37_067 7. Operator(s) : Deepak, Pramod, Shilpa 8. Command File : /data1/gtac/cmd/37_067/30nov19/obs_30nov19.py 9. LTA File : /gsbifrdata1/30nov/37_067_30nov2019_gsb.lta, /gwbifrdata1/30nov/37_067_30nov2019_gwb.lta 10. LogFlag File : 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 : 4.0265 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : C04 : Mechanical work. C11 : Frequently getting reset. C14 : Painting. W03 : Intermittent fringing. 33. Note for Backup :GSB full stoke is not working. 34. Start and End Time of Obs.(IST): 30 Nov 2019 11:45:00 - 30 Nov 2019 17:10:00 35. ONLINE Machine : TGC 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 : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 37_067 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 : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------------------------------------------------- 11:45 : Started settings. 12:18 : Started scan on 3C286 for ~ 15.3679 min. 12:41 : '/data1/gtac/cmd/37_067/30nov19/obs_30nov19.py' command file started. 17:52 : Stopped scan. Note : Phase cal and Target source set.Hence started scan on 3C48 for 10 min. 17:08 : Stopped scan and observation session is over.