GTAC Observation Log 1. Date : 21/04/2019 2. Observation Sr. No. : 11005 3. Observer : Barnali Das, Poonam Chandra, Wade, Matthew Shultz 4. Observer's Email : barnali@ncra.tifr.res.in, poonam@ncra.tifr.res.in, marmottecam@yahoo.ca, matt.shultz@gmail.com 5. Project Name : Searching for coherent emission from magnetic B type stars at uGMRT frequencies 6. Project Code : 36_031 7. Operator(s) : Deepak, Pramod 8. Command File : /odisk/gtac/cmd/36_031/21_apr/obs.cmd 9. LTA File : /gsbifrdata1/21apr/36_031_21apr2019_gsb.lta.1, /gsbifrdata1/21apr/36_031_21apr2019_gsb.lta, /gwbifrdata1/21apr/36_031_21apr2019_gwb.lta.1, /gwbifrdata1/21apr/36_031_21apr2019_gwb.lta 10. LogFlag File : /odisk/online1/logflags/36_031.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , 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) : 591 591 540 540 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : W06 : ABC time out S02 : Frequently applying EL brake. NOTE :15:00 to 16:40 : Tried to run online from new TGC.(Observer lost time) 33. Note for Backup : 34. Start and End Time of Obs.(IST): 21 Apr 2019 15:00:00 - 21 Apr 2019 20:10:00 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 : 400.0000 GPU_FINAL_BW : 400.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 36_031 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 : 16 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- 15:00 : Starred observation from new TGC online. Following problems observed while starting new TGC online. 1) DS server of GWB restred 3-4 times. 2) Project was not assigning to GSB.After restarting GSB for 2-3 times and changing GSB project code 36_031 to 36_031Ai,GSB started successfully. 3) Finally GSB and GWB started succefully at 16:00 Hr. From 16:07 to 16:17 data recorded on 3C147, but there was problem for source 0607-085. Hence online shifted to old online system and started observation. NOTE :15:00 to 16:40 : Tried to run online from new TGC.( Observer lost time) 16:40 : Started observation from old online. 16:43 : Started command file. '/odisk/gtac/cmd/36_031/21_apr/obs.cmd' 19:45 : Stopped command file. 19:51 : Started scan on 3C286. 20:01 : Stopped scan and observation session is over.