GTAC Observation Log 1. Date : 07/12/2015 2. Observation Sr. No. : 8233 3. Observer : Rajeshwari Dutta, Raghunathan Srianand, Neeraj Gupta, Ravi Joshi, Ayanda Romanis Zungu 4. Observer's Email : rdutta@iucaa.ernet.in, anand@iucaa.ernet.in, ngupta@iucaa.ernet.in, physistravi@gmail.com, arzngu@gmail.com 5. Project Name : HI 21-cm absorption from z~0.35 MgII systems 6. Project Code : 29_035 7. Operator(s) : Nilesh, Rupsing, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/29_035/obs.cmd 9. LTA File : /gsbifrdata/07dec/29_035_07dec2015.lta 10. LogFlag File : /odisk/online1/logflags/29_035.FLAGS.5 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1007.5566 MHz ,RF2 : 1007.5566 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 945 MHz, ILO2 : 945MHz , IVLO1 : 62.5566 MHz, IVLO2 : 62.5566 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 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 : 4 MHz; Step # 4 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 137.4434 28. LO5 -2 : 167.5566 29. Frequency Parameters (TPA) : 1007.5566 1007.5566 945 945 62.5566 62.5566 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) : W01 : BLDC. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 07 Dec 2015 05:00:00 - 07 Dec 2015 09:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : Note : At 08:10 while checking data we observed that, by mistake wrong command file (used on 14th Nov 2015) got started at 05:20. but it was already very late, and to complete observation we continued the same file for rest of the duration. ----------------------------------------------------------------------------- 05:04 : Started scan on 3C286. 05:20 : Started command file. 09:10 : Stopped command file. 09:12 : Started scan on 3C286. 09:27 : Stopped scan and observing session is over.