GTAC Observation Log 1. Date : 03/02/2020 2. Observation Sr. No. : 11863 3. Observer : Sumana Nandi, D.J. Saikia 4. Observer\'s Email : sumana1981@gmail.com, djs@ncra.tifr.res.in 5. Project Name : uGMRT observations of recently identified double-double radio galaxies 6. Project Code : 37_113 7. Operator(s) : Deepak, Shilpa, Shriram, Surender 8. Command File : /odisk/gtac/cmd/37_113/obs_s1.cmd,, /odisk/gtac/cmd/37_113/obs_s2.cmd 9. LTA File : /gsbifrdata/02feb/37_113_02feb2020_s2_gsb.lta, /gsbifrdata/02feb/37_113_02feb2020_gsb.lta, /gwbifrdata1/02feb/37_113_02feb2020_s2_gwb.lta, /gwbifrdata1/02feb/37_113_02feb2020_gwb.lta 10. LogFlag File : /odisk/online1/logflags/37_113.FLAGS.1, /odisk/online1/logflags/37_113.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1399 MHz ,RF2 : 1399 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1450 MHz, ILO2 : 1450MHz , 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) : 1399 1399 1450 1450 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : E04 : : FPS problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 02 Feb 2020 20:00:00 - 03 Feb 2020 03:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. RFI Status : 38. 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 : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 1450 1450 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 37_113 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 128 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- 20:13:06 : Started scan on 3C147 for ~ 9.39523 min. 20:25:00 : Started command File. /odisk/gtac/cmd/37_113/obs_s1.cmd 00:04 : Started scan on 3C147. Also started new LTA file. 00:20 : Started command file obs_s2.cmd. 02:45 : Command file stopped. 02:50 : Started scan on 3C147 for 15mins. 03:07 : Observation stopped.