GTAC Observation Log 1. Date : 13/11/2020 2. Observation Sr. No. : 12570 3. Observer : Andrea Botteon, Gianfranco Brunetti, Turgay Caglar, Rossella Cassano, Daniele Dallacasa, Reinout Johannes vanWeeren, Tiziana Venturi 4. Observer\'s Email : botteon@strw.leidenuniv.nl, brunetti@ira.inaf.it, caglar@strw.leidenuniv.nl, rcassano@ira.inaf.it, daniele.dallacasa@unibo.it, rvweeren@strw.leidenuniv.nl, tventuri@ira.inaf.it 5. Project Name : The radio halo with the steepest spectrum in the Universe? 6. Project Code : 39_024 7. Operator(s) : Deepak, Rupsing, Shriram, Surender 8. Command File : /data1/gtac/cmd/39_024/12nov20.py 9. LTA File : /gsbifrdata1/12nov/39_024_12nov2020_gsb.lta, /gwbifrdata2/12nov/39_024_12nov2020_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 :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C11 : LMC not working. C05 : No fringe(GSB). 33. Note for Backup : 34. Start and End Time of Obs.(IST): 12 Nov 2020 19:00:00 - 13 Nov 2020 01:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :26 37. RFI Status : 38. Comments (During Observations) : Note : GWB not working (cs no 2020.1738) ------------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 : 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 : TST2269 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 GPU_PFB : OFF GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_ENV : RELEASED -------------------------------- 18:50:00 : Started set-up. 19:00:08 : Started command file. /data1/gtac/cmd/39_024/12nov20.py 21:20:00 : GWB problem has been resolved. 21:22:00 : Started GWB. 21:24:00 : Restarted cmd file. /data1/gtac/cmd/39_024/12nov20.py 21:24:00 : W01 Strong RFI. 21:24:00 : W06 Low fringe in GWB. 00:43:00 : Stopped command file 00:49:00 : Started scan on 3C48 00:53:00 : W05 Batch restarted. 01:00:00 : Scan stopped and observing session over.