GTAC Observation Log 1. Date : 29/04/2018 2. Observation Sr. No. : 10211 3. Observer : Jayanta Roy, Paul Ray, Bhaswati Bhattacharyya, Ben Stappers, Jayaram Narayanan Chengalur, Sanjay S. Kudale, Tyrel J. Johnson, Matthew Kerr 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 5. Project Name : Long-term timing follow-up for the third transitional redback millisecond pulsar J1227-4853 6. Project Code : 34_048 7. Operator(s) : Nilesh, Sachin 8. Command File : /odisk/gtac/cmd/jroy/34_048_28apr.cmd, /odisk/gtac/cmd/jroy/34_048_28apr.1.cmd 9. LTA File : /gsbifrdata1/28apr/34_048_28apr2018_gsb.lta, /gwbifrdata1/28apr/34_048_28apr2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/34_048.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 20+10 dB, 32 MHz,OFF, IF-CH2 : 20+10 dB, 32 MHz,OFF GSB SETTINGS : 14. GSB Host : gsbm1 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : OFF 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : Volt 23. ACQ BW : 16.666666 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 156 156 218 218 62 62 30. Integration Time : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : E03 : Servo problem. W01 : MCM 5 time out. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 28 Apr 2018 21:15:00 - 29 Apr 2018 00:05:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 21:15 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 100.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 280 280 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 34_048 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : IA GPU_BEAM_4 : PA GPU_BM_INT : 2 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. -------------------------------- # GSB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=18 # BEAM-1:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=18 # BEAM-2:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=18 # BEAM-2:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=18 # GWB GAC configuration is as follows : # BEAM-3:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=18 # BEAM-3:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=18 # BEAM-4:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=18 # BEAM-4:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=18 21:20 : GWB power eq @ 150 counts, and phasing on 1154-350. 21:20 : GSB power eq @ 300 counts, and phasing on 1154-350. 21:40 : Started phasing on 1311-222. 21:55 : Started command file. 22:05 : Removed C04-130 and C06-175 from GWB GAC. # GWB GAC configuration is as follows : # BEAM-3:130 :: C00 C01 C02 C03 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=17 # BEAM-3:175 :: C00 C01 C02 C03 C04 C05 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=17 # BEAM-4:130 :: C00 C01 C02 C03 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=17 # BEAM-4:175 :: C00 C01 C02 C03 C04 C05 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W02 Total=17 22:36 : C02 removed from both GWB GAC and GSB GAC. 23:00:21 : Started scan on 1311-222 for ~ 4.59695 min. 23:05:05 : Started scan on 1311-222 for ~ 1.20796 min. 23:08:22 : Started scan on J1227-4853 for ~ 52.2778 min. 00:02 : Closed observation session.