GTAC Observation Log 1. Date : 23/05/2015 2. Observation Sr. No. : 7796 3. Observer : Pratik Dabhade, Joydeep Bagchi, Madhuri Gaikwad 4. Observer's Email : pratikdabhade13@gmail.com, joydeep@iucaa.ernet.in, madhuri.explorer@gmail.com 5. Project Name : GMRT observations of 3 new giant radio quasars 6. Project Code : 28_007 7. Operator(s) : Nilesh 8. Command File : /odisk/gtac/cmd/28_007/23may15_s3/obs.cmd 9. LTA File : /gsbifrdata/23may/28_007_23may2015.lta 10. LogFlag File : /odisk/online1/logflags/28_007.FLAGS.4 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 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 : 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 :28 32. Name of Non-Working Antennas (with reason for each) : C03 : High temperature, ABC time out. S04 : BLDC work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 23 May 2015 08:00:00 - 23 May 2015 12:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :25 37. Comments (During Observations) : 07:48 : Started scan on 3c48 for ~ 15min. 08:07 : Started command file. 09:02 : C00, C14, E03 - Servo time out. E05 and W03 - ABC time out. 09:09 : C00 started working. 09:12 : C14 started working. 09:15 : E05 and W03 started working. 10:00 : W05 taken for maintenance. 10:10 : C09 taken for FPS work. 10:25 : E03 released for observation. 11:07 : S-arm electrical power reset. 11:15 : S-arm electrical power reset. 11:22 : S-arm Started working. 11:42 : Stopped command file. 11:43 : Started scan on phase cal. 11:54 : Started scan on 3c48. 12:00 : Stopped observation session.