GTAC Observation Log 1. Date : 14/01/2011 2. Observation Sr. No. : 5193 3. Observer : Ramana Athreya 4. Observer's Email : rathreya@iiserpune.ac.in 5. Project Name : The extended GMRT RH Survey: exploring the origin and evolution of Radio Halos 6. Project Code : 19_039 7. Operator(s) : Navanath, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/rathreya/19039e.cmd 9. LTA File : /rawdata/14jan/19_039_14jan2011.lta, /rawdata1/14jan/19_039_14jan2011.ltb 10. GSB File : /gsbifrdata/14jan/19_039_14jan2011_gsb.lta 11. LogFlag File : /odisk/online1/logflags/19_039.FLAGS.7 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 614 MHz ,RF2 : 244 MHz, SA1 : 0 dB, SA2 : 14 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 680 MHz, ILO2 : 310 MHz, IVLO1 : 66 MHz, IVLO2 : 66 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 6 MHz,ON 15. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : GHB Settings : 16. GHB Channels : 0:127:1 17. Correlator Mode : IndianPolar 18. Frequency Parameters (TPA) : 614 244 680 310 66 66 GSB Settings : 19. Maximum Channels : 256 20. Final Bandwidth (MHz): OFF MHz; Step # 0 21. IFBW (MHz) : LO5 (KHz) : 32:149000-156000 22. Stokes : Total_Intensity 23. Beam - 1 : OFF 24. Beam - 2 : OFF 25. Integration Time : 128 LTA ~ 16.908 Sec. 26. No of Antennas Working(Fringing) :27 27. Name of Non-Working Antennas (with reason for each) : C11 : 130pol no fringe in GHB+GSB. E04 : 175pol no fringe in GHB+GSB. E02 : Fringe fluctuation for 175pol in GHB+GSB. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 00:00 - 08:02 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 2s Data Files: /rawdata/14jan/19_039_14jan2011_2s.lta, /rawdata1/14jan/19_039_14jan2011_2s.ltb, /gsbifrdata1/14jan/19_039_14jan2011_2s_gsb.lta. ------------------------------------------------------------------- 00:29 : Started scan on 3C147. 00:47 : Started scan on 3C147 for GSB. 00:59 : Stopped scan. 01:09 : '/odisk/gtac/cmd/rathreya/19039e.cmd' command file started. 01:50 : C04,C05,C06,C08 of 175pol stopped fringing in GSB. 06:34 : C02 abc timeout. 06:43 : C02 started working. 07:20 : command file stopped. 07:23 : Started scan on Z5247 for 10min 07:33 : scan stopped. 07:34 : Started scan on phase cal for 5 min : C02 ant got abc reset... 07:39 : scan stopped. 07:42 : Started scan on 3C286 for 20 min. 08:02 : Observing session over. -----------------------------------------------