GTAC Observation Log 1. Date : 04/3/2012 2. Observation Sr. No. : 5864 3. Observer : Nissim Kanekar 4. Observer's Email : nkanekar@ncra.tifr.res.in 5. Project Name : The nature of damped Lyman-alpha systems: measuring the gas mass of three absorbers at $z \sim 0.1$. 6. Project Code : 20_074 7. Operator(s) : Deepak, Nilesh, Rupsingh, Santaji, 8. Command File : /odisk/gtac/cmd/nissim/1009+0713.cmd, 9. LTA File : /gsbifrdata/04mar/20_074_04mar2012.lta, 10. LogFlag File : /odisk/online1/logflags/20_074.FLAGS.18 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1261 MHz ,RF2 : 1261 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1210 MHz, ILO2 : 1210 MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 32 MHz,ON, IF-CH2 : 10+12 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Total_Intensity 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 32 MHz 21. Maximum Channels : 512 22. IFBW (MHz) : LO5 (KHz) : 32:149000-156000 23. Final Bandwidth (MHz): OFF MHz; Step # 0 24. Frequency Parameters (TPA) : 1261 1261 1210 1210 51 51. 25. Integration Time : 16.106 Sec. 26. No of Antennas Working(Fringing) :27 27. Name of Non-Working Antennas (with reason for each) : C08 : Intermittent Fringe fluctuations. C11 : Frequently applying Brakes. W02 : No Fringe. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 18:45 - 05:00 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 18:45 : Started settings for observation. 18:55 : Started command file. '/odisk/gtac/cmd/nissim/1009+0713.cmd'. 04:46 : Command file stopped . 04:49 : Started scan on 3C286. 05:00 : Stopped scan & observation session over.