GTAC Observation Log 1. Date : 04/11/2015 2. Observation Sr. No. : 8139 3. Observer : Nissim Kanekar, Shiv Kumar Sethi, Dwarakanath K.S. 4. Observer's Email : nkanekar@ncra.tifr.res.in, sethi@rri.res.in, dwaraka@rri.res.in 5. Project Name : %latex%A GMRT search for HI-21cm emission from star-forming galaxies at $z \\\\\\\\\\\\\\\\approx 1.3$ 6. Project Code : 29_034 7. Operator(s) : Sachin 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata1/04nov/29_034_04nov2015.lta.1, /gsbifrdata1/04nov/29_034_04nov2015.lta 10. LogFlag File : /odisk/online1/logflags/29_034.FLAGS.7 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , 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 : 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) : 591 591 540 540 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : S01 and W04 : no fringe C00,C09,C13,E02,E03,E05,W04,S01,S02. : After power failure. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 04 Nov 2015 00:00:00 - 04 Nov 2015 05:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :19 37. Comments (During Observations) : 00:14 : Started scan on 3C48 for 10 mins. 00:38 : Started command file. 01:30 : Power glitch. Also observed that correlator has running one background processes i.e. read_corr.multi_256_4int which was from previous observation which was not killed properly. But no buffer loss seen. Recovered power failure at 02:00. 02:00 : Restarted gsb chain. Power failure following antennas gave problems C00,C09,C13,E02,E03,E05,W04,S01,S02. 02:10 : Started command file. 04:31 : Stopped command file and started scan on phase cal. 04:45 : Started scan on 3C147 for 20 mins. 05:05 : Stopped scan and observation session.