GTAC Observation Log 1. Date : 27/10/2018 2. Observation Sr. No. : 10600 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 : 35_045 7. Operator(s) : Shilpa 8. Command File : /odisk/gtac/cmd/jroy/35_045_27oct.cmd,, /odisk/gtac/cmd/jroy/35_045_27oct.1.cmd 9. LTA File : /gsbifrdata1/27oct/35_045_27oct2018_gsb.lta, /gwbifrdata1/27oct/35_045_27oct2018_gwb.lta.1, /gwbifrdata1/27oct/35_045_27oct2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/35_045.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+4 dB, 32 MHz,OFF, IF-CH2 : 24+4 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) : 306 306 255 255 51 51 30. Integration Time : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : C02 : All MCM timeout. C11 : Servo problem. C13 : 130 pol no fringe. S03 : 175 pol bad bandshape. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 27 Oct 2018 09:00:00 - 27 Oct 2018 12:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :25 37. Comments (During Observations) : ------------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_RF4 : 500 500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 35_045 GPU_CNTRL : ONLINE 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 : OFF GPU_TPA : From GWB GUI. GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF --------------------------------------------------------------------------- # GSB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 S03 W01 W02 W03 Total=19 # BEAM-1:175 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C13 C14 E02 E03 S01 S02 W01 W02 W03 Total=19 # BEAM-2:130 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 S03 W01 W02 W03 Total=19 # BEAM-2:175 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C13 C14 E02 E03 S01 S02 W01 W02 W03 Total=19 --------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 S03 W01 W02 W03 Total=19 # BEAM-1:175 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C13 C14 E02 E03 S01 S02 W01 W02 W03 Total=19 # BEAM-4:130 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 S03 W01 W02 W03 Total=19 # BEAM-4:175 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C13 C14 E02 E03 S01 S02 W01 W02 W03 Total=19 --------------------------------------------------------------------------- 08:55 : Started settings. 09:25 : Power equalized on 1154-350 @ 300 counts for GSB and 120 counts for GWB. 09:32 : Phasing done on 1154-350. 09:36 : '/odisk/gtac/cmd/jroy/35_045_27oct.cmd' command file started. 10:08 : C13 taken for cherry-picker work, so removed from GAC. --------------------------------------------------------------------------- # GSB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 S03 W01 W02 W03 Total=19 # BEAM-1:175 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 W01 W02 W03 Total=18 # BEAM-2:130 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 S03 W01 W02 W03 Total=19 # BEAM-2:175 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 W01 W02 W03 Total=18 --------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 S03 W01 W02 W03 Total=19 # BEAM-1:175 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 W01 W02 W03 Total=18 # BEAM-4:130 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 S03 W01 W02 W03 Total=19 # BEAM-4:175 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C12 C14 E02 E03 S01 S02 W01 W02 W03 Total=18 --------------------------------------------------------------------------- 10:19 : W06 taken for surface refurbishment work. 10:40 : GWB gives the error "Acquisition got killed". 10:45 : Stopped command file and halted GWB. 11:00 : Restarted GWB. 11:10 : Phasing done on 1526-138. 11:13 : '/odisk/gtac/cmd/jroy/35_045_27oct.1.cmd' command file started. C11 started working, so added in GAC. 11:33 : E-arm power failed, but started on generator. E03 got reset, so removed from GAC. --------------------------------------------------------------------------- 11:52 : Pulsar data not recorded on GWB. 12:00 : Stopped command file and observing session over.