GTAC Observation Log 1. Date : 22/08/2018 2. Observation Sr. No. : 10487 3. Observer : Nirupam Roy, Nissim Kanekar, Jayaram Narayanan Chengalur, Narendranath Patra 4. Observer's Email : roy.nirupam@gmail.com, nkanekar@ncra.tifr.res.in, chengalur@ncra.tifr.res.in, narendra@ncra.tifr.res.in 5. Project Name : The Temperature of the Warm Neutral Medium in the Milky Way 6. Project Code : 34_024 7. Operator(s) : Deepak, Sachin, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/nissim/0023-263_fq.cmd 9. LTA File : /gsbifrdata1/21aug/34_024_21aug2018.lta.1, /gsbifrdata1/21aug/34_024_21aug2018.lta, /gwbifrdata2/21aug/34_024_21aug2018_gwb.lta.1, /gwbifrdata2/21aug/34_024_21aug2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/34_024.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1411 MHz ,RF2 : 1411 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1350 MHz, ILO2 : 1350MHz , IVLO1 : 61 MHz, IVLO2 : 61 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 16 MHz,ON, IF-CH2 : 4+14 dB, 16 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 : 16.666666 MHz 24. Final BW : 2 MHz; Step # 4 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 139 28. LO5 -2 : 166 29. Frequency Parameters (TPA) : 1411 1411 1350 1350 61 61 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) : C10 : Servo problem. C12 : Feed jam. W06 : Low fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 21 Aug 2018 22:40:00 - 22 Aug 2018 07:05:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : ------------GWB Setting---------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 8 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 6.25 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 16384 GPU_CHAN_NUM : 0:16383:1 GPU_STOKES : 130; 2 Total_Intensity; 4 Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF4 : 1462 1462 GPU_DDCLO4 : 38.0 38.0 GPU_SB4 : 1 1 GCODE4 : 34_024 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 : 32 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : --------------------------------------------------------------------------- 22:40 : Started settings. 23:11 : Started command file. 23:35 : Noticed command gabloset is not working for new antennas CSQ antennas, which have new ADFbased synthesizer. 00:30 : Added command stgablo('1460000','1460000') to command file, which will set LO to CSQ antennas. 00:47 : Scan 0 bad. 00:57 : '/odisk/gtac/cmd/nissim/0023-263_fq.cmd' command file started. 06:50 : Stopped command file. 06:53 : Restarted command file. 07:05 : Stopped command file and observing session over.