GTAC Observation Log 1. Date : 16/08/2021 2. Observation Sr. No. : 13409 3. Observer : Devojyoti Kansabanik, Bhaswati Bhattacharyya, Jayanta Roy, Sanjay S. Kudale, Shubham Singh 4. Observer\'s Email : dkansabanik@ncra.tifr.res.in, bhaswati@ncra.tifr.res.in, jroy@ncra.tifr.res.in, ksanjay@gmrt.ncra.tifr.res.in, ssingh@ncra.tifr.res.in 5. Project Name : Polarization Study of Millisecond Pulsars using uGMRT 6. Project Code : 40_041 7. Operator(s) : Pramod, Surender 8. Command File : /data1/gtac/cmd/devojyoti/16aug21/cmd2.py, /data1/gtac/cmd/devojyoti/16aug21/cmd3.py 9. LTA File : /gsbifrdata1/16aug/40_041_16aug2021_gsb.lta, /gwbifrdata1/16aug/40_041_16aug2021_gwb.lta 10. LogFlag File : ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+4 dB, 32 MHz,OFF, IF-CH2 : 24+4 dB, 32 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 : Volt 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) : 306 306 255 255 51 51 30. Integration Time : 4.0265 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 16 Aug 2021 17:00:00 - 16 Aug 2021 22:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :29 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 8 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 : Full_Stoke GPU_SIDEBAND : 1 1 GPU_RF4 : 500 500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 40_041 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : PA 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 : OFF GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 8 GPU_VLT_BIT : 8 GPU_WALSH : OFF GPU_ENV : TRIAL -------------------------------- # GWB GAC configuration is as follows : # BEAM-3:130 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 S01 S02 S03 W01 W02 W03 Total=21 # BEAM-3:175 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 S01 S02 S03 W01 W02 W03 Total=21 17:00 : Started set up. 17:00 to 17:17 : init command failed for GWB and GSB. Therefore after restarting GSB and GWB problem solved. 17:18 : Restarted Correlator. 17:40 : Power equalized for GSB and GWB. 17:45 : Phasing done for GSB and GWB. 17:46 : Started command file. \'/data1/gtac/cmd/devojyoti/16aug21/cmd2.py\' 17:51 : Started next command file. \'/data1/gtac/cmd/devojyoti/16aug21/cmd3.py\' 22:00 : Stopped command file and observation session is over.