GTAC Observation Log 1. Date : 24/10/2017 2. Observation Sr. No. : 9804 3. Observer : Maryam Arabsalmani, Sambit Roychowdhury, Nissim Kanekar, Martin Alexander Zwaan 4. Observer's Email : maryam.arabsalmani@cea.fr, sambit.roychowdhury@manchester.ac.uk, nkanekar@ncra.tifr.res.in, mzwaan@eso.org 5. Project Name : Atomic gas in the host galaxy of GRB 060505 6. Project Code : 33_108 7. Operator(s) : Nilesh, Surender 8. Command File : /odisk/gtac/cmd/33_108/grb060505.cmd 9. LTA File : /gsbifrdata/23oct/33_108_23oct2017.lta.2, /gsbifrdata/23oct/33_108_23oct2017.lta.1, /gsbifrdata/23oct/33_108_23oct2017.lta 10. LogFlag File : /odisk/online1/logflags/33_108.FLAGS.3 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1298 MHz ,RF2 : 1298 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1235 MHz, ILO2 : 1235MHz , IVLO1 : 63 MHz, IVLO2 : 63 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 14+14 dB, 16 MHz,ON, IF-CH2 : 14+14 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 # 1 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 137 28. LO5 -2 : 168 29. Frequency Parameters (TPA) : 1298 1298 1235 1235 63 63 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C01 : : Low Fringe. C14 : : Mechanical work. W05 : : Mechanical work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 23 Oct 2017 17:00:00 - 24 Oct 2017 00:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 16:55 : Started settings. 17:03 : Started scan on 3C286 for ~ 16 min. GSB shows very low fringe counts for all antennas. 17:40 : Reconfigured settings, Restarted scan on phase cal. 17:45 : Restarted GSB. 17:49 : Started command file. /odisk/gtac/cmd/33_108/grb060505.cmd 19:00 : C00 - intermittent servo problem. 21:00 : Stopped command file. 21:10 : Started scan on 3C48 for ~ 10 min. 21:25 : Restarted command file. 23:45 : Stopped command file. 23:50 : Started scan on 3C48. 00:00 : Stopped scan and observing session over.