GTAC Observation Log 1. Date : 11/01/2021 2. Observation Sr. No. : 12793 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) : Nilesh 8. Command File : /data1/gtac/cmd/jroy/39_061_11jan.py 9. LTA File : /gwbifrdata/11jan/39_061b_11jan2021_gwb.lta, /gwbifrdata/11jan/39_061a_11jan2021_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 : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C02 : Feed not rotated. C04 : Feed not rotated. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 11 Jan 2021 04:00:00 - 11 Jan 2021 07:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :28 37. RFI Status : 38. Comments (During Observations) : 04:20 : Started Settings for Multi-Sub-array observation. ------------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_RF3 : 1460 1460 GPU_DDCLO3 : 0.000000 0.000000 GPU_SB3 : 1 1 GCODE3 : SUBA3 GPU_RF4 : 470 470 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : SUBA4 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : VOLTAGE GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : PA 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 -------------------------------- SUBA3 : at band3. C01, C02, C04, C05, C10, C11, C14, W01, S6, W6, E6 SUBA4 : at band4. C00, C06, C08, C09, C12, C13, W2, W3, W4, W5, S01, S2, S3, S4, E2, E3, E4, E5 # GWB GAC configuration is as follows : # BEAM-1:130 :: C01 C05 C10 C11 C14 W01 Total=6 # BEAM-1:175 :: C01 C05 C10 C11 C14 W01 Total=6 # BEAM-4:130 :: C00 C06 C08 C09 C12 C13 E02 E03 E04 S01 S02 S03 S04 W02 W03 W04 Total=16 # BEAM-4:175 :: C00 C06 C08 C09 C12 C13 E02 E03 E04 S01 S02 S03 S04 W02 W03 W04 Total=16 03:50 : Power eq at 120 counts on 1459+716. 03:55 : Phasing on 1459+716. 03:59 : Started scan on 1459+716 for ~ 5.18975 min. 04:06 : Started command file. 04:18 : Restarted command file (with Inner track). 05:30 : Band3 = C02 Started working. Added to GAC. Band4 = E05 and W05 added to GAC. # GWB GAC configuration is as follows : # BEAM-1:130 :: C01 C02 C05 C10 C11 C14 W01 Total=7 # BEAM-1:175 :: C01 C02 C05 C10 C11 C14 W01 Total=7 # BEAM-4:130 :: C00 C06 C08 C09 C12 C13 E02 E03 E04 E05 S01 S02 S03 S04 W02 W03 W04 W05 Total=18 # BEAM-4:175 :: C00 C06 C08 C09 C12 C13 E02 E03 E04 E05 S01 S02 S03 S04 W02 W03 W04 W05 Total=18 07:02 : Stopped command file and observation closed.