GTAC Observation Log 1. Date : 17/12/2019 2. Observation Sr. No. : 11689 3. Observer : Chandreyee Maitra, Subhashis Roy, Fabio Acero 4. Observer's Email : chandreyeee@gmail.com, roy@ncra.tifr.res.in, fabio.acero@cea.fr 5. Project Name : First radio imaging and polarization measurement of the nebula of the middle aged pulsar PSR J1831-0952 6. Project Code : 36_072 7. Operator(s) : Deepak, Pramod, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/royu36_072.17dec19.cmd 9. LTA File : /gsbifrdata1/17dec/36_072_17dec2019_gsb.lta, /gwbifrdata2/17dec/36_072_17dec2019_gwb.lta 10. LogFlag File : /odisk/online1/logflags/36_072.FLAGS.3, /odisk/online1/logflags/36_072.FLAGS.2 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 : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C10 and C14 : Taken for mechanical work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 17 Dec 2019 10:00:00 - 17 Dec 2019 16:10:00 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 : 400.0000 GPU_FINAL_BW : 400.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 1024 GPU_CHAN_NUM : 0:1023:1 GPU_STOKES : Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF4 : 1500 1500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 36_072 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 -------------------------------------------------------------------------- 10:00 : Started set-up. 10:24 : Started scan on 3C286 for ~ 5.01079 min. 10:34 : Started scan on 1609+266 for ~ 5.14748 min. 10:40 : Started command file. '/odisk/gtac/cmd/royu36_072.17dec19.cmd' 11:00 : E05 taken for FE work. 13:25 : Started scan on 3C286. 13:30 : Stopped scan. 13:33 : Started scan on 1609+266. 13:38 : Stopped scan and started command file. '/odisk/gtac/cmd/royu36_072.17dec19.cmd.1' 15:15 : E03 got abc reset. 15:36 : E03 started working. 16:02 : Stopped command file. 16:04 : Started scan on 1609+266. 16:10 : Stopped scan and observing session over.