GTAC Observation Log

1. Date : 16/01/2017
2. Observation Sr. No. : 9136
3. Observer : Nirupam Roy
4. Observer's Email : roy.nirupam@gmail.com
5. Project Name : Low frequency study of neutral and ionized gas in the Orion`s Veil
6. Project Code : 31_106
7. Operator(s) : Deepak, Nilesh, Rupsing, Shilpa
8. Command File : /odisk/gtac/cmd/nirupam/31_106/obs_09jan2017.cmd
9. LTA File : /gsbifrdata1/15jan/31_106_15jan2017.lta
10. LogFlag File : /odisk/online1/logflags/PNTG.FLAGS.2202, /odisk/online1/logflags/31_106.FLAGS.1

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1428.217 MHz ,RF2 : 1428.217 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1490 MHz, ILO2 : 1490MHz , IVLO1 : 61.783 MHz, IVLO2 : 61.783 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 6 MHz,ON, IF-CH2 : 4+12 dB, 6 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 : 1 MHz; Step # 7
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 138.217
28. LO5 -2  : 166.783

29. Frequency Parameters (TPA) : 1428.217 1428.217 1490 1490 61.783 61.783
30. Integration Time : 8.053 Sec
31. No of Antennas Working(Fringing) at the beginning :29

32. Name of Non-Working Antennas (with reason for each) :
S06 : : 175pol low fringe.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 15 Jan 2017 17:00:00 - 16 Jan 2017 03:00:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :27

37. Comments (During Observations) :
GWB Settings : 400MHz Bandwidth, 8k Channels, 1450MHz GABLO, Total Intensity
---------------------------------------------------------------------------
17:00 : Started settings.
17:47 : Started scan on 3C48 with first LO 1495MHz for 5min.
        tpa 1433.2170 1433.2170 1495 1495 61.783 61.783
      
        Changed the first LO 1490MHz.
        tpa 1428.217 1428.217 1490 1490 61.783 61.783
17:57 : Started scan on 3C48.
18:03 : Stopped scan.

18:06 : '/odisk/gtac/cmd/nirupam/31_106/obs_09jan2017.cmd' command file started.
22:12 : Stopped command file.

22:19 : Started scan on 3C48 for 10min.
-------------------------------------------------------------------------
22:25 : E03 No fringe.
-------------------------------------------------------------------------
22:30 : C03 servo problem.
22:35 : Changed the phase cal and restarted command file.
02:36 : Stopped command file.
02:41 : Started scan on 3C147.
02:47 : Stopped scan.
-------------------------------------------------------------------------
02:53 : L04 : 1485MHz
-------------------------------------------------------------------------
02:54 : Started scan on 3C147.
03:00 : Stopped scan and observation session over.