GTAC Observation Log 1. Date : 05/02/2016 2. Observation Sr. No. : 8381 3. Observer : Maryam Arabsalmani, Sambit Roychowdhury, Martin Alexander Zwaan, Nissim Kanekar, Palle Moller 4. Observer's Email : marabsal@eso.org, sambit@mpa-garching.mpg.de, mzwaan@eso.org, nkanekar@ncra.tifr.res.in, pmoller@eso.org 5. Project Name : HI 21 cm emission studies of gamma ray burst host galaxies 6. Project Code : 29_077 7. Operator(s) : Pramod, Rupsing 8. Command File : /odisk/gtac/cmd/nissim/grb080517.cmd,, /odisk/gtac/cmd/nissim/grb031203.cmd 9. LTA File : /gsbifrdata1/04feb/29_077_04feb2016.lta.1, /gsbifrdata1/04feb/29_077_04feb2016.lta 10. LogFlag File : /odisk/online1/logflags/29_077.FLAGS.2 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 : 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 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 :26 32. Name of Non-Working Antennas (with reason for each) : C03 : BLDC. C04 : ABC time out. E04 : Feed cage painting. W04 : No fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 04 Feb 2016 18:00:00 - 05 Feb 2016 01:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 18:04 : Started scan on 3C147. 18:10 : Stopped scan. 18:15 : Started command file. "/odisk/gtac/cmd/nissim/grb080517.cmd" 20:14 : Stopped command file. ------------------------------------------------------------------------- RF Band : 1280 LO(1) : 1215 MHz IF BW : 18 MHz LO(5) : 136.4 168.6 MHz LO(4) : 63.6 63.6 MHz Baseband BW : 4.1667 MHz -------------------------------------------------------------------------- 20:20 : C04 started working. -------------------------------------------------------------------------- 20:21 : Started scan on 3C147 20:27 : Stopped scan. 20:32 : Started command file. "/odisk/gtac/cmd/nissim/grb031203.cmd" Note : 23:20 to 00:20 : Scintillation is observed in the data. 00:46 : Stopped command file. 00:52 : Started scan on 3C147. 01:00 : Stopped scan and observation session is over.