GTAC Observation Log 1. Date : 14/05/2019 2. Observation Sr. No. : 11075 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) : Navnath, Nilesh 8. Command File : /odisk/gtac/cmd/jroy/36_047_14may.cmd 9. LTA File : /gsbifrdata/14may/36_047_band4_14may2019_gsb.lta, /gsbifrdata/14may/36_047_band3_14may2019_gsb.lta, /gwbifrdata2/14may/36_047_band4_14may2019_gwb.lta, /gwbifrdata2/14may/36_047_band3_14may2019_gwb.lta 10. LogFlag File : /odisk/online1/logflags/36_047B.FLAGS.1, /odisk/online1/logflags/36_047A.FLAGS.3 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,OFF, IF-CH2 : 4+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) : 591 591 540 540 51 51 30. Integration Time : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C04 : : Feed Jammed. S04 : : Self power fluctuations. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 14 May 2019 19:00:00 - 14 May 2019 23:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 19:00 : Started setup. ------------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 : 500 500 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 -------------------------------- **# sub 2 # C02 C03 C04 C05 C10 C11 W01 E02 S01 ante 9 5 1 3 19 12 9 8 17 26 cp 0;defs 2;subar 2 ** 470 , 255, 32, ALC OFF, TPA 306 306 255 255 51 51 ** GAB 500 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 21 7 6 20 24 4 2 11 10 13 14 15 16 25 18 21 22 23 27 28 29 30 cp 0;defs 4;subar 4 ** 725 , 540, 32, ALC OFF, TPA 591 591 540 540 51 51 ** GAB 550 MHz, BW = 200 , USB :::::::::::::: gsb_gac.dat :::::::::::::: # GSB GAC configuration is as follows : # BEAM-1:130 :: C02 C03 C05 C10 C11 E02 S01 W01 Total=8 # BEAM-1:175 :: C02 C03 C05 C10 C11 E02 S01 W01 Total=8 # BEAM-2:130 :: C00 C01 C06 C08 C09 C12 C13 C14 E03 E04 E05 S02 S03 S04 W02 W03 W04 W05 Total=18 # BEAM-2:175 :: C00 C01 C06 C08 C09 C12 C13 C14 E03 E04 E05 S02 S03 S04 W02 W03 W04 W05 Total=18 :::::::::::::: gwb_gac.dat :::::::::::::: # GWB GAC configuration is as follows : # BEAM-1:130 :: C02 C03 C05 C10 C11 E02 S01 W01 Total=8 # BEAM-1:175 :: C02 C03 C05 C10 C11 E02 S01 W01 Total=8 # BEAM-3:130 :: C00 C01 C06 C08 C09 C12 C13 C14 E03 E04 E05 S02 S03 S04 W02 W03 W04 W05 Total=18 # BEAM-3:175 :: C00 C01 C06 C08 C09 C12 C13 C14 E03 E04 E05 S02 S03 S04 W02 W03 W04 W05 Total=18 19:20 : Started power eq @ 150 counts for GWB and 300 counts for GSB on 1154-350. 19:35 : Started phasing on 1154-350. 19:50 : Started command file. /odisk/gtac/cmd/jroy/36_047_14may.cmd 21:50 : Online got crashed due to sockets open for unixhub, scctask etc. , but still continued data acquisition with correlator. Antennas tracking and servo status etc monitored via TGC. 23:00 : Stopped command file, stopped scan and observation closed.