GTAC Observation Log

1. Date : 29/03/2016
2. Observation Sr. No. : 8506
3. Observer : Srikrishna Sekhar, Shweta, C.H. IshwaraChandra, Ramana Athreya
4. Observer's Email : sekhars@students.iiserpune.ac.in, ashweta@students.iiserpune.ac.in, ishwar@ncra.tifr.res.in, rathreya@iiserpune.ac.in
5. Project Name : The Evolution of Spatial Structure of Spectral Index in Dead/Dying Radio Sources
6. Project Code : 29_062
7. Operator(s) : Manisha, Nilesh
8. Command File : /odisk/gtac/cmd/29_062/29mar16/obs.cmd
9. LTA File : /gsbifrdata1/29mar/29_062_29mar2016_2s.lta.1, /gsbifrdata1/29mar/29_062_29mar2016_2s.lta, /gsbifrdata1/29mar/29_062_29mar2016_16s.lta.1, /gsbifrdata1/29mar/29_062_29mar2016_16s.lta
10. LogFlag File : /odisk/online1/logflags/29_062.FLAGS.8, /odisk/online1/logflags/29_062.FLAGS.7

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 16+12 dB, 16 MHz,ON, IF-CH2 : 16+12 dB, 16 MHz,ON

GSB SETTINGS :

14. GSB Host : gsbm1_lenyadri
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 : 256
26. Channel Numbers : 0:255:1
27. LO5 -1  : 138
28. LO5 -2  : 167

29. Frequency Parameters (TPA) : 156 156 218 218 62 62
30. Integration Time : 2.0132 Sec
31. No of Antennas Working(Fringing) at the beginning :25

32. Name of Non-Working Antennas (with reason for each) :
C06 : : BLDC installation.
S01 : : Feed Jam.
E05 : : Very strong RFI @ 150 MHz.
W05 : : Very Strong RFI @ 150 MHz.
C11 : : No Fringe, MCM 5 time out.
33. Note for Backup :

34. Start and End Time of Obs.(IST): 29 Mar 2016 23:45:00 - 29 Mar 2016 07:47:00

35. ONLINE Machine : Lenyadri

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

37. Comments (During Observations) :
23:45 : Started settings.
23:57 : Started scan on 3C286.
00:15 : C11 Started working.
00:35 : Started command file.
         '/odisk/gtac/cmd/29_062/29mar16/obs.cmd'.

00:55 : GSB ACQ got killed automatically, after heavy BUFFER LOSS.
01:15 : Restarted GSB.
01:22 : Restarted command file.
         '/odisk/gtac/cmd/29_062/29mar16/obs.cmd'.
06:32 : Stopped command file.

06:37 : Started scan on 3C286.
07:01 : Stopped scan.

07:05 : Restarted command file.
07:47 : Stopped command file due to source set and observing session over.