GTAC Observation Log 1. Date : 30/07/2010 2. Observation Sr. No. : 4991 3. Observer : Gregory Paciga 4. Observer's Email : paciga@astro.utoronto.ca 5. Project Name : The GMRT EoR Project 6. Project Code : 18_058 7. Operator(s) : Amruta, Deepak, Rupsingh, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/uelipen/jul30_final.1.cmd, /odisk/gtac/cmd/uelipen/jul30_final.2.cmd 9. LTA File : /rawdata/30jul/18_058_30jul2010.lta, /rawdata1/30jul/18_058_30jul2010.ltb 10. GSB File : 11. LogFlag File : /odisk/online1/logflags/18_058.FLAGS.5 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 : 24+4 dB, 16 MHz,OFF, IF-CH2 : 14+4 dB, 16 MHz,OFF 15. BB BW(KHz) & BB ALC : 16000 KHz, OFF CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 156 156 218 218 62 62 18. Integration Time : 128 LTA ~ 16.908 Sec. 19. No of Antennas Working(Fringing) :29 20. Name of Non-Working Antennas (with reason for each) : E02 : Servo problems. 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 20:00 - 07:46 23. ONLINE Machine : Shivneri 24. Correlator Mode : UsbPolar 25. Comments (During Observations) : 20:00 : Started power eq. 20:20 : Power eq. done. 20:25 : Noise source on,low cal,25% duty cycle. 20:35 : Started command file /odisk/gtac/cmd/uelipen/jul30_final.1.cmd 00:03 : Stopped command file. 00:04 : Started command file /odisk/gtac/cmd/uelipen/jul30_final.2.cmd 04:45 : Scan no. 23 having 0 records, later come to know that stopping time written in command file is 04h64m for OFFN source which should be 05h04m. 04:47 : The next scan's start time also written wrong i.e. 04:67m which should be 05h07m. 07:43 : E-arm power failed. 07:46 : Stopped command file (source set) and observing session over.