GTAC Observation Log 1. Date : 17/03/2017 2. Observation Sr. No. : 9264 3. Observer : Yashwant Gupta, BHAL CHANDRA JOSHI, Jayanta Roy, Yogesh Maan, Kishalay De, Manjari Bagchi, Gopakumar Achamveedu, Nikhil Vijay Naik 4. Observer's Email : ygupta@ncra.tifr.res.in, bcj@ncra.tifr.res.in, jroy@ncra.tifr.res.in, ymaan@ncra.tifr.res.in, ugkishalayde@ug.iisc.in, manjari.bagchi@gmail.com, gopu.tifr@gmail.com, naiknikhil27@gmail.com 5. Project Name : Towards precision pulsar timing with the upgraded GMRT 6. Project Code : 31_057 7. Operator(s) : Deepak, Shilpa 8. Command File : /odisk/gtac/cmd/31_057/cmdfile_dual_freq_timing_7_psrs_slot2_LST_05-10_17mar17.cmd.txt 9. LTA File : /gwbifrdata/17mar/31_057_500_suba2_17mar2017.lta, /gwbifrdata/17mar/31_057_1460_suba4_17mar2017.lta 10. LogFlag File : /odisk/online1/logflags/31_057.FLAGS.23,, /odisk/online1/logflags/31_057B.FLAGS.10, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1454 MHz ,RF2 : 1454 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1505 MHz, ILO2 : 1505MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_lenyadri 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 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 1454 1454 1505 1505 51 51 30. Integration Time : 4.0265 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : E03 : Feed jam. W03 : Mechanical work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 17 Mar 2017 18:00:00 - 17 Mar 2017 22:02:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : ------------GWB Setting---------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 1.0 GPU_EDGE_FRQ : 0.000000 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_RF : 1460 1460 GPU_DDC : OFF GPU_DDCLO : 0.0000 0.0000 GPU_SIDEBAND : 1 1 GPU_RF2 : 500 500 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 31_057B GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 31_057 GPU_CNTRL : 8 GPU_FSTOP : OFF GPU_BEAM_1 : PA GPU_BEAM_2 : PA GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From GWB GUI. GPU_BITS : 32 inputs. GPU_FILRFI : RFI Filterring OFF --------------------------------------------------------------------------- # sub 2 # C00 C02 C05 C11 W05 W06 E05 E06 S04 S06 ante 10 7 5 19 9 16 25 22 23 29 30 cp 0;defs 2;subar 2 tpa 306 306 255 255 51 51 # sub 4 # C01 C03 C04 C06 C08 C09 C10 C12 C13 C14 W01 W02 W03 W04 E02 E03 E04 S01 S02 S03 ante 20 6 1 3 20 24 4 12 2 11 10 8 13 14 15 17 18 21 26 27 28 cp 0;defs 4;subar 4 tpa 1454 1454 1505 1505 51 51 -------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C02 C05 C11 Total=4 # BEAM-1:175 :: C00 C02 C05 C11 Total=4 # BEAM-2:130 :: C03 C04 C06 C08 C09 C10 C12 C13 C14 E02 W02 Total=11 # BEAM-2:175 :: C03 C04 C06 C08 C09 C10 C12 C13 C14 E02 W02 Total=11 --------------------------------------------------------------------------- 18:00 : Started settings. 18:45 : Power equalized on 3C147 @ 150 counts at GWB o/p. 18:56 : '/odisk/gtac/cmd/31_057/cmdfile_dual_freq_timing_7_psrs_slot2_LST_05-10_17mar17.cmd.txt' command file started. 20:09 to 20:29 : Satellite observed. 22:02 : Stopped command file and observing session over.