GTAC Observation Log 1. Date : 18/02/2018 2. Observation Sr. No. : 10105 3. Observer : Bringfried Stecklum, Jochen Eisloeffel, Matthias Hoeft, Alessio CarattioGaratti, Riccardo Cesaroni, Luca Moscadelli, Kamlesh Rajpurohit, Tom Ray, Alberto Sanna 4. Observer's Email : stecklum@tls-tautenburg.de, jochen@tls-tautenburg.de, hoeft@tls-tautenburg.de, alessio@cp.dias.ie, cesa@arcetri.astro.it, mosca@arcetri.astro.it, phy.kamlesh@gmail.com, tr@cp.dias.ie, asanna@mpifr-bonn.mpg.de 5. Project Name : Following-up the first ever detected accretion burst in a high-mass YSO 6. Project Code : 33_071 7. Operator(s) : Navnath, Rupsing 8. Command File : /odisk/gtac/cmd/33_071/obs.cmd 9. LTA File : /gsbifrdata1/18feb/33_071_18feb2018_gsb.lta, /gwbifrdata/18feb/33_071_18feb2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/33_071.FLAGS.2 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+12 dB, 32 MHz,ON, IF-CH2 : 4+12 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 : Full_Stokes 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 : 8.053 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): 18 Feb 2018 18:00:00 - 18 Feb 2018 23:05:00 35. ONLINE Machine : Lenyadri 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 : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF4 : 500 500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 33_071 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 : 64 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------------------------------------------------- 18:10 : Setup done 18:15 : No fringe in GWB but gsb working fine -------------------------------------------------------------------------- 18:20 : GWB matmon showing very less cross counts. -------------------------------------------------------------------------- 18:30 : Tried restarting GWB das chain but still same problem exists. -------------------------------------------------------------------------- 18:45 : It was noticed that few backup process was running on gwbh9 and gwbh10 -------------------------------------------------------------------------- 18:50 : All the running backup process killed and restarted GWB chain -------------------------------------------------------------------------- 18:55 : Started scan on 3C147. 19:05 : Scan stopped. 19:08 : Command file started. 22:42 : Stopped command file. 22:45 : Started scan 3C147. 23:00 : Stopped scan and observation session over.