GTAC Observation Log 1. Date : 15/06/2021 2. Observation Sr. No. : 13203 3. Observer : Jayanta Roy, Nissim Kanekar, Aditya Chowdhury 4. Observer\'s Email : jroy@ncra.tifr.res.in, nkanekar@ncra.tifr.res.in, chowdhury@ncra.tifr.res.in 5. Project Name : A Deep Multi-Frequency Study of FRB 20210402A 6. Project Code : ddtC182 7. Operator(s) : Nilesh, Shriram 8. Command File : /data1/gtac/cmd/jroy/ddtc182_15jun.cal.py, /data1/gtac/cmd/jroy/ddtc182_15jun.py 9. LTA File : /gwbifrdata2/15jun/ddtc182b_15jun2021_subar2_band3_gwb.lta, /gwbifrdata2/15jun/ddtc182a_15jun2021_subar3_band4_gwb.lta, /gwbifrdata2/15jun/ddtc182_15jun2021_subar4_band5_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, 16 MHz,OFF, IF-CH2 : 4+14 dB, 16 MHz,OFF 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 : OFF 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) : 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. W06 : Taken for painting. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 15 Jun 2021 10:00:00 - 15 Jun 2021 13:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :28 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 500 500 GPU_DDCLO2 : 0.000000 0.000000 GPU_SB2 : 1 1 GCODE2 : DDTC182B GPU_RF3 : 550 550 GPU_DDCLO3 : 0.000000 0.000000 GPU_SB3 : 1 1 GCODE3 : DDTC182A GPU_RF4 : 1060 1060 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : DDTC182 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : VOLTAGE GPU_BEAM_2 : PA GPU_BEAM_3 : PA GPU_BEAM_4 : IA GPU_BM_INT : 16 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : OFF GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 8 GPU_VLT_BIT : 8 GPU_ENV : TRIAL -------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C04 C06 C10 C11 C12 C13 C14 W01 Total=11 # BEAM-1:175 :: C00 C01 C02 C04 C06 C10 C11 C12 C13 C14 W01 Total=11 # BEAM-2:130 :: C08 C09 E02 E03 E04 S02 S03 S04 W02 W03 W04 Total=11 # BEAM-2:175 :: C08 C09 E02 E03 E04 S02 S03 S04 W02 W03 W04 Total=11 # BEAM-3:130 :: C05 E05 E06 S06 W05 W06 Total=6 # BEAM-3:175 :: C05 E05 E06 S06 W05 W06 Total=6 # BEAM-4:130 :: C08 C09 E02 E03 E04 S02 S03 S04 W02 W03 W04 Total=11 # BEAM-4:175 :: C08 C09 E02 E03 E04 S02 S03 S04 W02 W03 W04 Total=11 -------------------------------------------------------------------------- 10:00 : Started settings. 10:10 : Splited antennas in to Sub 2, Sub 3 and Sub4 SUB 2 ::c00 c01 c02 c04 c06 c10 c11 c12 c13 c14 w01 s01 SUB 3 ::c08 c09 w02 w03 w04 e02 e03 e04 s02 s03 s04 SUB 4 ::c05 w05 w06 e05 e06 s06 10:30 : GSB power equalized on 3C138 for all Subarray. Halted GSB. 10:45 : GWB power equalized on 3C138 for all subarray. 11:00 : Phasing done for all subarray. 11:00 : S01 and W06 removed from GAC. 11:00 : Started command file, \'/data1/gtac/cmd/jroy/ddtc182_15jun.cal.py\' 11:20 : Command file execution complete. 11:25 : Started command file, \'/data1/gtac/cmd/jroy/ddtc182_15jun.py\' 13:00 : Command file stopped and observing session over.