GTAC Observation Log 1. Date : 19/05/2018 2. Observation Sr. No. : 10273 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) : Rupsing 8. Command File : /odisk/gtac/cmd/ 9. LTA File : /gwbifrdata1/19may/34_048_19may2018_gwb_550lo.lta, /gwbifrdata1/19may/34_048_19may2018_gwb_1460lo.lta 10. LogFlag File : /odisk/online1/logflags/SUBA2.FLAGS.1116, /odisk/online1/logflags/34_048.FLAGS.6 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+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON 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 :30 32. Name of Non-Working Antennas (with reason for each) : 33. Note for Backup : 34. Start and End Time of Obs.(IST): 19 May 2018 18:30:00 - 19 May 2018 21:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :30 37. Comments (During Observations) : ------------GWB Setting--------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 550 550 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : -1 -1 GCODE2 : SUBA2 GPU_RF4 : 1460 1460 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 : PA GPU_BEAM_4 : PA GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : For 32 inputs GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------------------------------------------------- # sub 2 # 610MHz # C00 C01 C02 C05 C10 C11 C12 C13 W01 S01 # sub 4 # 1420MHz # C03 C04 C06 C08 C09 C14 W02 W03 W04 W05 W06 E02 E03 E04 E05 E06 S02 S03 S04 S06 ------------------------------------------------------------------------- 18:50 : Power done both gsb and gwb 18:55 : Phasing done for gsb 19:00 : Phasing done in GWB only suba 4 19:05 : No phase suba 2(610MHz) ------------------------------------------------------------------------- 19:10 : Frequency selection problem and band shape showing in GWB(590MHz to 190MHz) ------------------------------------------------------------------------- 19:15 : GAB LO change 950MHz. ------------------------------------------------------------------------- 19:20 : Problem not solved. ------------------------------------------------------------------------ 19:40 : Observation stopped due to suba 2(610MHz) no phase. ------------------------------------------------------------------------ 20:30 : Problem solved. ----------------------------------------------------------------------- 20:35 : Observation not done.