GTAC Observation Log 1. Date : 24/05/2015 2. Observation Sr. No. : 7799 3. Observer : Virginia Cuciti, Gianfranco Brunetti, Rossella Cassano, Daniele Dallacasa, Ruta Kale, Tiziana Venturi 4. Observer's Email : vcuciti@ira.inaf.it, brunetti@ira.inaf.it, rcassano@ira.inaf.it, daniele.dallacasa@unibo.it, ruta@ncra.tifr.res.in, tventuri@ira.inaf.it 5. Project Name : GMRT observations of mass-selected galaxy clusters to test models for the origin of radio halos 6. Project Code : 28_066 7. Operator(s) : Nilesh, Pramod, Surender 8. Command File : /odisk/gtac/cmd/28_066/obs_s1.cmd 9. LTA File : /gsbifrdata/24may/28_066_24may2015.lta 10. LogFlag File : /odisk/online1/logflags/28_066.FLAGS.1,/odisk/online1/logflags/28_066.FLAGS 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 : 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 :28 32. Name of Non-Working Antennas (with reason for each) : S04 : Taken for BLDC. W04 : Amplitude variation. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 24 May 2015 02:40:00 - 24 May 2015 10:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 02:45 : Started set-up. 02:58 : Started scan on 3C286 for 20min. 03:20 : Started command file. '/odisk/gtac/cmd/28_066/obs_s1.cmd' 09:41 : Stopped command file. 09:47 : Started scan on 3C48. 10:00 : Stopped scan and observation session is over.