GTAC Observation Log 1. Date : 23/05/2021 2. Observation Sr. No. : 13113 3. Observer : Robert Daniel Kincaid, Viral Parekh, Keegan Somerset Trehaeven 4. Observer\'s Email : kincaidr@ymail.com, viral.parekh2912@gmail.com, ktrehaeven@gmail.com 5. Project Name : Detection of diffuse radio halo in the double relic systemZwCL 2341\\\\+0000 6. Project Code : 40_056 7. Operator(s) : Rupsing, Shriram, Surender 8. Command File : /data1/gtac/cmd/40_056/23May2021.py 9. LTA File : /gsbifrdata/23may/40_056_23may2021_gsb.lta, /gsbifrdata1/23may/40_056_23may2021_gsb.lta, /gwbifrdata1/23may/40_056_23may2021_gwb.lta, /gwbifrdata2/23may/40_056_23may2021_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+12 dB, 32 MHz,ON, IF-CH2 : 4+12 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) : 591 591 540 540 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C08 : LMC down. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 23 May 2021 04:00:00 - 23 May 2021 12:10:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :28 37. RFI Status :RFI filter not working for 400MHz band width and 4k channels(volt+4 sigma) 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : SUBA4 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 : OFF GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_ENV : RELEASED ------------------------------------------------------------------------- 04:20 : Setup done. ------------------------------------------------------------------------- 04:25 : GWB correlator not working for 400MHz band width and 4k channels with RFI filter(volt+4 sigma). ------------------------------------------------------------------------- 04:35 : Restarted with 3 sigma and its it\'s also not working. ------------------------------------------------------------------------- 04:45 : Normal GWB correlator restarted and it\'s working fine ------------------------------------------------------------------------- 04:57 : Started command file ------------------------------------------------------------------------- 05:30 : Stopped command file due to GSB+GWB project association problem. ------------------------------------------------------------------------- 05:35 : GSB+GWB correlator restarted and its working. ------------------------------------------------------------------------- 05:40 : Restarted command file ------------------------------------------------------------------------- 07:47 : Command file stopped. 07:54 : Started scan on 3C48 ~15 min 08:09 : Scan stopped. 08:15 : Command file restarted. 11:45 : Command file stopped. 11:49 : Started scan on 3C147 12:08 : Scan stopped and observing session over.