GTAC Observation Log 1. Date : 13/7/2013 2. Observation Sr. No. : 6605 3. Observer : Nissim Kanekar,Jayaram Narayanan Chengalur 4. Observer's Email : nkanekar@ncra.tifr.res.in,chengalur@ncra.tifr.res.in 5. Project Name : The spin temperature of high-redshift damped Lyman-alpha systems 6. Project Code : 24_055 7. Operator(s) : Navanath,Pramod,Surender 8. Command File : /odisk/gtac/cmd/nissim/1642+1848.cmd 9. LTA File : /gsbifrdata/13jul//24_055_13jul2013.lta, 10. LogFlag File : /odisk/online1/logflags/24_055.FLAGS.7, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 326 MHz ,RF2 : 326 MHz, SA1 : 0 dB, SA2 : dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 266 MHz, ILO2 : 266 MHz , IVLO1 : 60 MHz, IVLO2 : 60 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Mode : Realtime 15. GSB LTA : 8 16. GSB CTRL : ONLINE 17. GSB Fstop : ON 18. GAIN EQ : ON 19. Stokes : TotIntensity 20. Beam - 1 : OFF 21. Beam - 2 : OFF 22. ACQ BW : 16.67 MHz 23. Final BW : 4.17 MHz; Step # 2 24. Maximum Channels : 512 25. Channel Numbers : 0:511:1 26. LO5 -1 : 140.00 27. LO5 -2 : 165.00 28. Frequency Parameters (TPA) : 326 326 266 266 60 60. 29. Integration Time : 16.106112 Sec. 30. No of Antennas Working(Fringing) :29 31. Name of Non-Working Antennas (with reason for each) : E05 - BLDC work. 32. Note for Backup : 33. Start and End Time of Obs.(IST): 17:45 - 04:00 34. ONLINE Machine : Shivneri 35. Comments (During Observations) : 17:45 : Stared set up. 17:52 : Started scan on 3C286. 18:02 : Stopped scan on 3C286 and started following command file. '/odisk/gtac/cmd/nissim/1642+1848.cmd' 03:00 : Stopped command file. 03:05 : Started scan on 3C48. 04:00 : Stopped scan & observing session over.