GTAC Observation Log 1. Date : 18/05/2023 2. Observation Sr. No. : 15420 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 : 44_067 7. Operator(s) : Navnath, Pramod, Surender 8. Command File : 9. LTA File : /gwbifrdata/18may/44_067_18may2023_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 : 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 :29 32. Name of Non-Working Antennas (with reason for each) : E03 : Low fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 18 May 2023 20:00:00 - 18 May 2023 21:30:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :29 37. RFI Status : 38. Comments (During Observations) : ******************************************************************* Important Note for Observer: The refurbishment work for the W02 antenna reflector surface is currently in progress. The refurbishment of the inner sectors will commence from 16th May 2023 onwards. Please note that this ongoing work may affect the sensitivity of the antenna and could also alter the primary beam pattern, depending on the size of holes present on the surface. We advise exercising caution in using the antenna, particularly if your targets are extended or if you\'re using a wide field. ******************************************************************* 20:00:00 : Started setup. : GWB not getting init. 20:30:00 : Cleared all shared memory manually from gwbh6. 20:35:00 : Restarted GWB chain. 20:41:20 : Started scan on 1154-350 for ~ 0.53687 min. 20:43:30 : Started scan on 1154-350 for ~ 2.058 min. 20:45:51 : Started scan on 1154-350 for ~ 0.53687 min. 20:50:06 : Started scan on J1227-4853 for ~ 36.5072 min. 21:30:00 : Observation sesios closed. ------------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 : 725 725 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 44_067 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : VOLTAGE 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 : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_WALSH : OFF GPU_ENV : RELEASED ----------------------------------------------------------------- # BEAM-2:130 :: 0 TEST data5 PA 1460 C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=24 # BEAM-2:175 :: 0 TEST data5 PA 1460 C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=24 # BEAM-3:130 :: 0 TEST data3 PA 1460 C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=24 # BEAM-3:175 :: 0 TEST data3 PA 1460 C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E04 S01 S02 S03 S04 W01 W02 W03 W04 Total=24 ------------------------------------------------------------------