GTAC Observation Log 1. Date : 16/09/2014 2. Observation Sr. No. : 7353 3. Observer : Nissim Kanekar,Aditya JNHS 4. Observer's Email : nkanekar@ncra.tifr.res.in,aditya@ncra.tifr.res.in 5. Project Name : DDTB140 -A search for associated HI 21cm absorption at high redshifts. 6. Project Code : DDTB140 7. Operator(s) : Nilesh 8. Command File : /odisk/gtac/cmd/aditya/2356\+39.cmd 9. LTA File : /gsbifrdata/16sep/ddtb140_16sep2014.lta 10. LogFlag File : /odisk/online1/logflags/DDTB140.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 628 MHz ,RF2 : 628 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 575 MHz, ILO2 : 575MHz , IVLO1 : 53 MHz, IVLO2 : 53 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 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 : 33.333333 MHz 24. Final BW : 33.333333 MHz; Step # 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 147 28. LO5 -2 : 158 29. Frequency Parameters (TPA) : 628 628 575 575 53 53 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 : Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 01 Jan 1970 05:30:00 - 01 Jan 1970 05:30:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 00:00 : Started settings. 00:11 : Started command file. 00:20 : Low Fringe for Y-array antennas. Updated pointing offsets from last pointing session. Then W-arm and S-arm fringe looks good, but E-arm still shows low fringe counts. 02:00 : Stopped command file and closed observation session.