GTAC Observation Log 1. Date : 20/09/2021 2. Observation Sr. No. : 13521 3. Observer : Yogesh Maan 4. Observer\'s Email : ymaan4@gmail.com 5. Project Name : Radio Pulsation Search for a Putative Black Widow Pulsar Candidate 6. Project Code : ddtC202 7. Operator(s) : Shilpa, Shriram 8. Command File : /data1/gtac/cmd/ddtc202/obs.py 9. LTA File : /gwbifrdata2/20sep/ddtc202_20sep2021_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 : 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 : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. S06 : Servo maintenance. C11 : 130 pol low fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 20 Sep 2021 01:00:00 - 20 Sep 2021 06:16:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :27 37. RFI Status : 38. Comments (During Observations) : Pulsar Data Files On :- GWBH7 : /data8/gpuuser/DDTC202_data8_20sep2021/* GWBH8 : /data8/gpuuser/DDTC202_data8_20sep2021/* ------------GWB Setting--------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 16 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : DDTC202 GPU_CNTRL : TGC GPU_FSTOP : ON GPU_BEAM_1 : PA GPU_BEAM_2 : VOLTAGE GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : ON GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_WALSH : OFF GPU_ENV : RELEASED -------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C12 C13 C14 E02 E03 S01 S02 W01 W02 Total=18 # BEAM-1:175 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C12 C13 C14 E02 E03 S01 S02 W01 W02 Total=18 # BEAM-2:130 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C12 C13 C14 E02 E03 S01 S02 W01 W02 Total=18 # BEAM-2:175 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C12 C13 C14 E02 E03 S01 S02 W01 W02 Total=18 -------------------------------------------------------------------------- 01:00 : Started settings. 01:18 : Power equalized on 3C48. 01:20 : \'/data1/gtac/cmd/ddtc202/obs.py\' command file started. 01:27 : There was no record command after phasing, so stopped command file and checked phasing. Phasing was not done properly. 01:27 : Started phasing on 0410+769 for ~ 3.93705 min. 01:32 : Started scan on 0410+769 for ~ 1.43165 min. 01:36 : Restarted command file. 06:08 : Command file stopped. 06:11 : Started scan on 3C48 ~5 min. 06:16 : Scan stopped an observing session over.