GTAC Observation Log 1. Date : 24/4/2013 2. Observation Sr. No. : 6465 3. Observer : Nissim Kanekar 4. Observer's Email : nkanekar@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, Rupsingh, Surender 8. Command File : /odisk/gtac/cmd/nissim/1254-4059.cmd 9. LTA File : /gsbifrdata/24apr/24_055_24apr2013.lta, /gsbifrdata1/24apr/24_055_24apr2013_2s.lta 10. LogFlag File : /odisk/online1/logflags/24_055.FLAGS.2 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 312 MHz ,RF2 : 312 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 245 MHz, ILO2 : 245 MHz , IVLO1 : 67 MHz, IVLO2 : 67 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 6 MHz,ON, IF-CH2 : 4+12 dB, 6 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 : 16 MHz 21. Maximum Channels : 512 22. IFBW (MHz) : LO5 (KHz) : 6:133000-172000 23. Final Bandwidth (MHz): 2 MHz; Step # 0 24. Frequency Parameters (TPA) : 312 312 245 245 67 67. 25. Integration Time : 2.013 Sec. 26. No of Antennas Working(Fringing) :26 27. Name of Non-Working Antennas (with reason for each) : C01 : Structural repair. E03 : BLDC. E04 : Servo time out. W06 : Frequently applying brakes. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 19:34 - 00:00 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : 19:25 : Started set-up. 19:34 : Started Scan on 3C286. 20:13 : Started command file. 02:21 : Stopped command file. 02:25 : Started scan on 3C286. 02:40 : Stopped scan & observation session over.