GTAC Observation Log 1. Date : 01/06/2016 2. Observation Sr. No. : 8622 3. Observer : Nissim Kanekar, Jayaram Narayanan Chengalur, Jason X. Prochaska 4. Observer's Email : nkanekar@ncra.tifr.res.in, chengalur@ncra.tifr.res.in, xavier@ucolick.org 5. Project Name : %latex% The Spin Temperature of High-Redshift Damped Lyman-$\\\\\\\\alpha$ systems 6. Project Code : 30_068 7. Operator(s) : Navnath, Pramod, Surender 8. Command File : /odisk/gtac/cmd/nissim/0913\+003.cmd,, /odisk/gtac/cmd/nissim/1013\+615.cmd 9. LTA File : /gsbifrdata/31may/30_068_31may2016.lta.1, /gsbifrdata/31may/30_068_31may2016.lta 10. LogFlag File : /odisk/online1/logflags/30_068.FLAGS.12, /odisk/online1/logflags/30_068.FLAGS.11 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 372.1 MHz ,RF2 : 372.1 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 309 MHz, ILO2 : 309MHz , IVLO1 : 63.1 MHz, IVLO2 : 63.1 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 6 MHz,ON, IF-CH2 : 4+14 dB, 6 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 : 2 MHz; Step # 3 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 137.2 28. LO5 -2 : 167.8 29. Frequency Parameters (TPA) : 372.1 372.1 309 309 63.1 63.1 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C02 : Taken for BLDC 33. Note for Backup : 34. Start and End Time of Obs.(IST): 31 May 2016 18:00:00 - 01 Jun 2016 00:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 17:40 : Started set up. 18:08 : Started command file. '/odisk/gtac/cmd/nissim/0913+003.cmd' 19:58 : Stopped command file and started new GSB set up with new command file. 19:58 : Strong RFI is observed in the data. Target source : 1013+615 Flux calibrator : 3C286 Phase calibrator: 1035+564 Line frequency : 377.1 MHz All ALCs ON RF Band : 327 MHz LO(1) : 307 MHz IF BW : 6 MHz LO(5) : 137.2 167.8 MHz LO(4) : 62.8 62.8 MHz Baseband BW : 2.08 MHz Step : 3 Channels : 512 lta : 8m TPA 369.8 369.8 307 307 62.8 62.8 The band should cover 378.13 - 376.05 MHz. 00:00 : Observation session over. -----------------------------------