GTAC Observation Log 1. Date : 22/03/2016 2. Observation Sr. No. : 8489 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 : 29_075 7. Operator(s) : Pramod, Sachin 8. Command File : /odisk/gtac/cmd/nissim/j1250\+0734.cmd 9. LTA File : /gsbifrdata/21mar/29_075_21mar2016.lta 10. LogFlag File : /odisk/online1/logflags/29_075.FLAGS.6 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1378 MHz ,RF2 : 1378 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1440 MHz, ILO2 : 1440MHz , 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_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 : 16.666666 MHz; Step # 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 1378 1378 1440 1440 62 62 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) : S06 : Taken for CST painting E06 : Low fringe C01 : Amplitude variation. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 21 Mar 2016 20:00:00 - 22 Mar 2016 06:52:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 20:00 : Started set up. 20:08 : Started scan on 3C147. 20:23 : Stopped scan and started command file. '/odisk/gtac/cmd/nissim/j1250+0734.cmd' 06:25 : Stopped command file and started scan on phase cal. 06:30 : Stopped scan on phase cal. 06:32 : Started scan on 3C286. 06:52 : Stopped scan on 3C286 and closed observation session.