GTAC Observation Log 1. Date : 01/04/2021 2. Observation Sr. No. : 13042 3. Observer : Jayanta Roy, Paul Ray, Bhaswati Bhattacharyya, Ben Stappers, Jayaram Narayanan Chengalur, Sanjay S. Kudale, Tyrel J. Johnson, Matthew Kerr, Patrick Weltevrede, Paulo Cesar Freire 4. Observer\'s Email : jroy@ncra.tifr.res.in, paul.ray@nrl.navy.mil, bhaswati@ncra.tifr.res.in, Ben.Stappers@manchester.ac.uk, chengalur@ncra.tifr.res.in, ksanjay@gmrt.ncra.tifr.res.in, tyrel.j.johnson@gmail.com, matthew.kerr@gmail.com, Patrick.Weltevrede@manchester.ac.uk, pfreire@mpifr-bonn.mpg.de 5. Project Name : Long-term timing follow-up for the third transitional redback millisecond pulsar J1227-4853 6. Project Code : 39_061 7. Operator(s) : Shriram 8. Command File : /data1/gtac/cmd/jroy/39_061_01apr.py 9. LTA File : /gwbifrdata/01apr/39_061_01apr2021_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/TGC 18. GSB Fstop : ON 19. GAIN EQ : OFF 20. Stokes : Total_Intensity 21. Beam - 1 : IA 22. Beam - 2 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 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. C01 : Feed not rotating. E06 : LMC down 33. Note for Backup : 34. Start and End Time of Obs.(IST): 01 Apr 2021 00:00:00 - 01 Apr 2021 01:27:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :27 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 : 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 : 39_061 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : VOLTAGE GPU_BEAM_2 : OFF GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 4 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 : 16 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_ENV : RELEASED -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=23 # BEAM-1:175 :: C00 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=23 # BEAM-3:130 :: C00 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=23 # BEAM-3:175 :: C00 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=23 -------------------------------------------------------------------------- 23:45 : Started settings. 00:08 : Power equalized and phasing done on 1154-350. 00:12 : Command file started, \'/data1/gtac/cmd/jroy/39_061_01apr.py\' 00:14 : C12 removed from GAC as it was not tracking Source correctly. 00:23 : C12 started tracking. Added back to GAC and restarted scan. 01:27 : Command file execution complete. Observing session over.