GTAC Observation Log

1. Date : 20/02/2015
2. Observation Sr. No. : 7623
3. Observer : Ewan OSullivan, Nimisha Kantharia, Konstantinos Kolokythas, Somak Raychaudhury, Sandeep K. Sirothia, C.H. IshwaraChandra, Gopal krishna
4. Observer's Email : eosullivan@cfa.harvard.edu, ngk@ncra.tifr.res.in, kkolok@star.sr.bham.ac.uk, somak@star.sr.bham.ac.uk, sirothia@ncra.tifr.res.in, ishwar@ncra.tifr.res.in, krishna@ncra.tifr.res.in
5. Project Name : The origin of the HI trail and ultra-steep radio structure in the NGC 5903/NGC 5898 group
6. Project Code : 25_006
7. Operator(s) : Manisha, Rupsing, Surender
8. Command File : /odisk/gtac/cmd/ngk/25_006/ngc5903-20feb15.cmd
9. LTA File : /gsbifrdata/20feb/25_006_20feb2015.lta
10. LogFlag File : /odisk/online1/logflags/25_006.FLAGS.4

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1402 MHz ,RF2 : 1402 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1340 MHz, ILO2 : 1340MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON

GSB SETTINGS :

14. GSB Host : gsbm1
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 : 16.666666 MHz
24. Final BW : 16.666666 MHz; Step # 
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 138
28. LO5 -2  : 167

29. Frequency Parameters (TPA) : 1402 1402 1340 1340 62 62
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :26

32. Name of Non-Working Antennas (with reason for each) :
W04 : RFI
W05 : No feed.
W06 : MCM-2 time out.
S06 : ABC time out.
C01 : Low fringe @130 pol.
33. Note for Backup :

34. Start and End Time of Obs.(IST): 20 Feb 2015 02:00:00 - 20 Feb 2015 10:00:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :26

37. Comments (During Observations) :
02:06 : Started scan on 3C286.
02:26 : Stopped scan.
02:29 : Started command file.
08:10 : stopped command file
08:15 : started scan on 3C286 20mins
08:38 : stared command file.
09:00 : E05 released for painting.
09:40 : ACQ is showing intermittently Buffer loss. 
10:00 : stopped command file and observation session over.