GTAC Observation Log 1. Date : 26/12/2015 2. Observation Sr. No. : 8282 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) : Deepak, Nilesh, Surender 8. Command File : /odisk/gtac/cmd/29_035/26dec15/obs.cmd 9. LTA File : /gsbifrdata1/26dec/29_035_26dec2015.lta 10. LogFlag File : /odisk/online1/logflags/29_035.FLAGS.11 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1007.6541 MHz ,RF2 : 1007.6541 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1070 MHz, ILO2 : 1070MHz , IVLO1 : 62.3459 MHz, IVLO2 : 62.3459 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 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 : 137.6541 28. LO5 -2 : 167.3459 29. Frequency Parameters (TPA) : 1007.6541 1007.6541 1070 1070 62.3459 62.3459 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C10 : feed cage painting W04 : Low fringe@130 pol. W01 : BLDC work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 26 Dec 2015 06:00:00 - 26 Dec 2015 14:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :26 37. Comments (During Observations) : 06:14 : Started scan on 3C286 for 12 mins. 06:29 : Started command file. 08:13 - 09:23 : C11 telemetry problem. 09:05 : Stopped command file and started scan on 3c286 for ~ 10 min. 09:50 : E06 taken for mechanical work. 10:58 : W01 taken for BLDC. 12:15 : Stopped command file and started scan on 3c286 for ~ 10 min. 13:54 : command file stopped. 13:55 : Started scan on phase cal for ~ 5 min. 14:00 : Stopped observation.