GTAC Observation Log 1. Date : 15/01/2016 2. Observation Sr. No. : 8332 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) : Sachin, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/nissim/j0951\+3307.cmd 9. LTA File : /gsbifrdata/14jan/29_075_14jan2016.lta 10. LogFlag File : /odisk/online1/logflags/29_075.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1406 MHz ,RF2 : 1406 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1345 MHz, ILO2 : 1345MHz , 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_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 : 16.666666 MHz; Step # 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 139 28. LO5 -2 : 166 29. Frequency Parameters (TPA) : 1406 1406 1345 1345 61 61 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : C03 : BLDC. C06 : MCM-14 timed out. Feed not rotated. C09 : ABC time out. C12 : Feed cage painting. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 14 Jan 2016 23:00:00 - 15 Jan 2016 09:04:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :25 37. Comments (During Observations) : 23:19 : Setup completed and started command file. 05:49 : W06 fringe vanished. 06:47 : W03 ABC timed out. 06:54 : W03 got ABC reset. 07:38 : W03 started working. 08:24 : Stopped command file. 08:27 : Started scan on 3C286. 09:04 : Stopped scan and observing session over.