GTAC Observation Log 1. Date : 23/10/2017 2. Observation Sr. No. : 9803 3. Observer : Poonam Chandra, Edo Berger, Nayana AJ, Tarraneh Eftekhari 4. Observer's Email : poonam@ncra.tifr.res.in, eberger@cfa.harvard.edu, nayan89deva@gmail.com, teftekhari@cfa.harvard.edu 5. Project Name : Characterising the late time nature of a tidal disruption event Sw 1644\\+57 at low frequencies 6. Project Code : 33_041 7. Operator(s) : Navnath, Nilesh 8. Command File : /odisk/gtac/cmd/poonam/33_041/23oct/obs.cmd 9. LTA File : /gsbifrdata/23oct/33_041_23oct2017.lta.1, /gsbifrdata/23oct/33_041_23oct2017.lta 10. LogFlag File : /odisk/online1/logflags/PNTG.FLAGS.2520, /odisk/online1/logflags/33_041.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , IVLO1 : 51 MHz, IVLO2 : 51 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 : Full_Stokes 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 306 306 255 255 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C00 : : Servo Work (Cherry Picker) C14 : : Painting Work W05 : Painting Work 33. Note for Backup : 34. Start and End Time of Obs.(IST): 23 Oct 2017 12:00:00 - 23 Oct 2017 16:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 12:00 : Started setup. 12:11 : Started scan on 3C286. 12:24 : Started cmd file. /odisk/gtac/cmd/poonam/33_041/23oct/obs.cmd 15:35 : Noticed that GSB losts its fringe counts, when traced it back found that it happened around 14:00 IST. 15:55 : Restarted GSB, and started scan on 3C286 for 10 min. 16:10 : Closed observations.