GTAC Observation Log 1. Date : 28/04/2010 2. Observation Sr. No. : 4841 3. Observer : Sandip Sirothia, Nimisha Kantharia 4. Observer's Email : sirothia@ncra.tifr.res.in,ngk@ncra.tifr.res.in 5. Project Name : Extra Galactic survey @ 150MHz. 6. Project Code : 18_031 7. Operator(s) : Amruta, Deepak, Navanath, Nilesh, Rupsingh, 8. Command File : /odisk/gtac/cmd/sirothia/18_031_20100429a.cmd, /odisk/gtac/cmd/sirothia/18_031_20100429b.cmd 9. LTA File : /rawdata/29apr/18_031_29apr2010.lta, /rawdata1/29apr/18_031_29apr2010.ltb, 10. GSB File : /gsbifrdata/29apr/18_031_29apr2010_gsb.lta, /gsbifrdata/29apr/18_031_29apr2010_gsb.lta.1, 11. LogFlag File : /odisk/online1/logflags/18_031.FLAGS.9 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 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 16000 KHz, ON 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) :28 20. Name of Non-Working Antennas (with reason for each) : C01 : OFF E04 : Painting. 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 17:15 - 07:33 23. ONLINE Machine : Shivneri 24. Correlator Mode : UsbPolar 25. Comments (During Observations) : ------------------------------------------------- 2 second Data Files : /rawdata/29apr/18_031_29apr2010_2s.lta, /rawdata1/29apr/18_031_29apr2010_2s.ltb, /gsbifrdata/29apr/18_031_29apr2010_2s_gsb.lta, /gsbifrdata/29apr/18_031_29apr2010_2s_gsb.lta.1, ------------------------------------------------- 17:15 : Started setup. 17:32 : Started scan on J0218+4232 for 20min. 17:55 : Started scan on 3c147. 17:57 : In gsb E-arm and S-arm 130 pol No Fringe. So, Restarted gsb. 18:00 : E04 released for observation. 18:56 : Started command file. '/odisk/gtac/cmd/sirothia/18_031_20100429a.cmd' 19:37 : Scan#14 of GHB and scan#13 of GSB are bad. Source not risen, Hence stopped command file. 19:43 : Restarted command file. 00:11 : Started scan on phase cal 00:23 : Started scan on 3C286 for 15min. 00:47 : Started command file. /odisk/gtac/cmd/sirothia/18_031_20100429b.cmd 07:08 : Stopped command file. 07:15 : Started scan on 3C48. 07:33 : Stopped scan and observation closed.