GTAC Observation Log 1. Date : 15/06/2020 2. Observation Sr. No. : 12113 3. Observer : Arun Naidu 4. Observer\'s Email : arunnaidu123@gmail.com 5. Project Name : DDTC135 6. Project Code : DDTC135 7. Operator(s) : Sachin 8. Command File : /odisk/gtac/cmd/ddtc135/obs.cmd 9. LTA File : /gwbifrdata2/15jun/ddtc135_band3_15jun2020_gwb.lta 10. LogFlag File : /odisk/online1/logflags/DDTC135.FLAGS.2, /odisk/online1/logflags/DDTC135.FLAGS.1, /odisk/online1/logflags/DDT135.FLAGS.1, /odisk/online1/logflags/DDT135.FLAGS 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 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 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) : 306 306 255 255 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Maintenance. C10 : No fringe. C11 : Feed problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 15 Jun 2020 07:00:00 - 15 Jun 2020 11:10:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 100.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF3 : 280 280 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : DDT135 GPU_RF4 : 250 250 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : DDTC135 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : Voltage GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 32 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C04 C05 C06 C08 C09 C12 C13 C14 Total=9 # BEAM-1:175 :: C00 C04 C05 C06 C08 C09 C12 C13 C14 Total=9 # BEAM-2:130 :: C01 C02 E02 E03 S01 S02 S03 W01 W02 W03 Total=10 # BEAM-2:175 :: C01 C02 E02 E03 S01 S02 S03 W01 W02 W03 Total=10 # BEAM-3:130 :: C01 C02 E02 E03 S01 S02 S03 W01 W02 W03 Total=10 # BEAM-3:175 :: C01 C02 E02 E03 S01 S02 S03 W01 W02 W03 Total=10 Note : Typo in command file. Source list mentioned in command file was not having first pulsar. User 3 was not taking commands, hence restarted it. 07:45:36 : Started scan on 3C48 for ~ 0.805306 min. 08:19:28 : Started command file. 11:10 : Stopped command file closed observation session.