GTAC Observation Log 1. Date : 26/10/2018 2. Observation Sr. No. : 10593 3. Observer : Jayaram Narayanan Chengalur, Aditya Chowdhury, Nissim Kanekar, Shiv Kumar Sethi, Dwarakanath K.S. 4. Observer's Email : chengalur@ncra.tifr.res.in, chowdhury@ncra.tifr.res.in, nkanekar@ncra.tifr.res.in, sethi@rri.res.in, dwaraka@rri.res.in 5. Project Name : %latex%The Neutral Hydrogen Content of Galaxies at $z \\\\approx 0.75 − 1.45$. 6. Project Code : 35_087 7. Operator(s) : Deepak, Pramod, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/nissim/deep2_31.cmd 9. LTA File : /gsbifrdata1/25oct/35_087_25oct2018.lta, /gwbifrdata/25oct/35_087_25oct2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/35_087.FLAGS 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_lenyadri 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 : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 591 591 540 540 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C11 : Servo problem. C13 : No fringe in both GSB and GWB. W06 : Low fringe due to surface refurbishment work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 Oct 2018 18:00:00 - 26 Oct 2018 02:20:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : ------------GWB Setting---------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 1 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 8192 GPU_CHAN_NUM : 0:8191:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 530 530 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 35_087 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 --------------------------------------------------------------------------- 18:00 : Started settings. 18:33 : Started scan on 3C48 for ~ 11.0058 min. 18:48 : '/odisk/gtac/cmd/nissim/deep2_31.cmd' command file started. 22:47 : W01 automatically got abc reset. 23:29 : W01 started working. 01:51 : Stopped command file. 01:53 : Started scan on 3C48 for 12 min. 02:05 : Stopped scan and observation session is over.