GTAC Observation Log 1. Date : 22/01/2017 2. Observation Sr. No. : 9152 3. Observer : Nissim Kanekar, Sambit Roychowdhury, Jason X. Prochaska, Jayaram Narayanan Chengalur, Marcel Neeleman, Tapasi Ghosh 4. Observer's Email : nkanekar@ncra.tifr.res.in, sambit@mpa-garching.mpg.de, xavier@ucolick.org, chengalur@ncra.tifr.res.in, mneeleman@physics.ucsd.edu, tghosh@naic.edu 5. Project Name : Mapping HI 21cm emission from low-redshift damped Lyman-alpha systems. 6. Project Code : 31_095 7. Operator(s) : Deepak, Navnath, Shilpa 8. Command File : /odisk/gtac/cmd/nissim/j1512\+0128.cmd 9. LTA File : /gsbifrdata1/22jan/31_095_22jan2017.lta 10. LogFlag File : /odisk/online1/logflags/31_095.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1388 MHz ,RF2 : 1388 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1450 MHz, ILO2 : 1450MHz , IVLO1 : 62 MHz, IVLO2 : 62 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_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 : 16.666666 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 1388 1388 1450 1450 62 62 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) : W05 : Feed jam. C03 : 130pol fringe fluctuation. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 22 Jan 2017 03:00:00 - 22 Jan 2017 13:15:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 03:00 : Started settings. 03:13 : '/odisk/gtac/cmd/nissim/j1512+0128.cmd' 0command file started. 12:29 : command file stoppe. 12:31 : Started scan on phase cal. 12:48 : Started scan on 3C48. 13:00 : Started command file stopped. ------------------------------------------------------