GTAC Observation Log 1. Date : 21/02/2011 2. Observation Sr. No. : 5257 3. Observer : Sandeep Sirothia, Ishwar Chandra 4. Observer's Email : sirothia@ncra.tifr.res.in,ishwar@ncra.tifr.res.in 5. Project Name : The GMRT extra-galactic sky survey at 150 MHz 6. Project Code : 19_043 7. Operator(s) : Deepak, Manisha, Navanath, Rupsingh, Sachin, 8. Command File : /odisk/gtac/cmd/sirothia/loop1to2.cmd, /odisk/gtac/cmd/sirothia/loop3to5.cmd 9. LTA File : /rawdata/21feb/19_043_21feb2011.lta, /rawdata1/21feb/19_043_21feb2011.ltb 10. GSB File : /gsbifrdata/21feb/19_043_21feb2011_gsb.lta 11. LogFlag File : /odisk/online1/logflags/19_043.FLAGS.71 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 218 MHz, ILO2 : 218 MHz, IVLO1 : 62 MHz, IVLO2 : 62 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 16 MHz,ON, IF-CH2 : 10+12 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : GHB Settings : 16. GHB Channels : 0:127:1 17. Correlator Mode : UsbPolar 18. Frequency Parameters (TPA) : 156 156 218 218 62 62 GSB Settings : 19. Maximum Channels : 256 20. Final Bandwidth (MHz): OFF MHz; Step # 0 21. IFBW (MHz) : LO5 (KHz) : 16:138000-167000 22. Stokes : Full_Polar 23. Beam - 1 : IA 24. Beam - 2 : PA 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) : C04 : BLDC maintenance. C11 : Painting. S02 : Painting. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 17:00 - 07:24 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : * 2S data file * /rawdata/21feb/19_043_21feb2011_2s.lta, /rawdata1/21feb/19_043_21feb2011_2s.ltb, /gsbifrdata1/21feb/19_043_21feb2011_gsb_2s.lta ----------------------------------------------- 17:12 : Started scan on 3C48. 17:53 : S02 released for observation 17:58 : Stopped scan. 17:59 : C11 released for observation. 18:00 : Started scan on J0218+4232. 18:25 : Stopped scan. 18:29 : Started command file /odisk/gtac/cmd/sirothia/loop1to2.cmd 22:50 : Stopped command file. 22:51 : Started command file '/odisk/gtac/cmd/sirothia/loop3to5.cmd' 07:06 : command file stopped. 07:08 : started scan on 3C286 ~ 15mins. 07:24 : stopped das & Observation session.