GTAC Observation Log 1. Date : 11/05/2019 2. Observation Sr. No. : 11063 3. Observer : Jayanta Roy, Paul Ray, Bhaswati Bhattacharyya, Ben Stappers, Jayaram Narayanan Chengalur, Sanjay S. Kudale, Tyrel J. Johnson, Matthew Kerr, Patrick Weltevrede 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 5. Project Name : Long-term timing follow-up for the third transitional redback millisecond pulsar J1227-4853 6. Project Code : 36_047 7. Operator(s) : Nilesh 8. Command File : /odisk/gtac/cmd/jroy/36_047_11may.cmd 9. LTA File : /gsbifrdata1/11may/36_047_band4_sub4_11may2019.lta, /gsbifrdata1/11may/36_047_band2_sub2_11may2019.lta, /gwbifrdata2/11may/36_047_band4_sub4_11may2019_gwb.lta, /gwbifrdata2/11may/36_047_band2_sub2_11may2019_gwb.lta 10. LogFlag File : /odisk/online1/logflags/36_047B.FLAGS, /odisk/online1/logflags/36_047A.FLAGS.2 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 167 MHz ,RF2 : 167 MHz, SA1 : 14 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 26+14 dB, 32 MHz,OFF, IF-CH2 : 26+14 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 : PA 22. Beam - 2 : PA 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) : 167 167 218 218 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C01 : FPS + Servo problem. E06 : ABC time out. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 11 May 2019 20:00:00 - 11 May 2019 23:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 19:00 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 300 300 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 36_047B GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 36_047A GPU_CNTRL : ONLINE 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 : OFF GPU_TPA : From GWB GUI. GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- 19:20 : Online - problem in creating subar2/user2, tried 2-3 times. then problem occurred for user4 as well, after which restarted whole online. ** ** GWB Settings : 200 , 4k, bm-int:4, Voltage-OFF-PA-OFF ** PE at 120 counts and phasing on 1154-350 ** GSB Settings : 32mhz, 512, trial, PA-PA, ** PE at 300 counts and phasing on 1154-350 ** ** Antenna SETTINGS ** **# sub 2 # C02 C04 C05 C10 C11 W02 E02 S02 ante 8 5 3 19 12 9 13 17 27 cp 0;defs 2;subar 2 ** 150 , 218, 32, ALC OFF, TPA 167 167 218 218 51 51 ** GWB 300 MHz, BW = 200 , LSB ** **# sub 4 # C00 C01 C03 C06 C08 C09 C12 C13 C14 W01 W03 W04 W05 W06 E03 E04 E05 E06 S01 S03 S04 S06 ante 22 7 6 1 20 24 4 2 11 10 8 14 15 16 25 18 21 22 23 26 28 29 30 cp 0;defs 4;subar 4 ** 725 , 540, 32, ALC OFF, TPA 591 591 540 540 51 51 ** GWB 550 MHz, BW = 200 , USB :::::::::::::: gwb_gac.dat :::::::::::::: # GWB GAC configuration is as follows : # BEAM-1:130 :: C02 C04 C05 C10 C11 E02 S02 W01 Total=8 # BEAM-1:175 :: C02 C04 C05 C10 C11 E02 S02 W01 Total=8 # BEAM-2:130 :: Total=0 # BEAM-2:175 :: Total=0 # BEAM-3:130 :: C00 C03 C06 C08 C09 C12 C13 C14 E03 E04 E05 S01 S03 S04 W02 W03 W04 W05 Total=18 # BEAM-3:175 :: C00 C03 C06 C08 C09 C12 C13 C14 E03 E04 E05 S01 S03 S04 W02 W03 W04 W05 Total=18 # BEAM-4:130 :: C00 C03 C06 C08 C09 C12 C13 C14 E03 E04 E05 S01 S03 S04 W02 W03 W04 W05 Total=18 # BEAM-4:175 :: C00 C03 C06 C08 C09 C12 C13 C14 E03 E04 E05 S01 S03 S04 W02 W03 W04 W05 Total=18 :::::::::::::: gsb_gac.dat :::::::::::::: # GSB GAC configuration is as follows : # BEAM-1:130 :: C02 C04 C05 C10 C11 E02 S02 W02 Total=8 # BEAM-1:175 :: C02 C04 C05 C10 C11 E02 S02 W02 Total=8 # BEAM-2:130 :: C00 C03 C06 C08 C09 C12 C13 C14 E03 E04 E05 S01 S03 S04 W01 W03 W04 W05 Total=18 # BEAM-2:175 :: C00 C03 C06 C08 C09 C12 C13 C14 E03 E04 E05 S01 S03 S04 W01 W03 W04 W05 Total=18 19:30 : Started power eq on 1154-350. GSB at 300 counts and GWB at 120 counts. 19:40 : Started phasing on 1154-350. 19:51:59 : Started scan on 1154-350 for ~ 4.9325 min. 19:57:14 : Started scan on 1154-350 for ~ 5.03316 min. 20:02:49 : Started scan on 1154-350 for ~ 1.74483 min. 20:04:47 : Started scan on 1154-350 for ~ 3.99297 min. 20:10:39 : Started scan on J1227-4853 for ~ 82 min. 20:40 : Antenna C01 : FPS problem solved after FPS and MCM resets. 20:42 : Antenna C01 : Servo problem - Not releasing brakes. 21:32 : Stopped scan. 21:34:05 : Started scan on 1154-350 for ~ 3.15411 min. 21:37:31 : Started scan on 1154-350 for ~ 5.60358 min. 21:43:25 : Started scan on 1154-350 for ~ 6.57666 min. 21:50:22 : Started scan on 1154-350 for ~ 2.61724 min. 21:54:31 : Started scan on J1227-4853 for ~ 66 min. 23:02 : Stopped scan and observations closed.