GTAC Observation Log

1. Date : 05/12/2016
2. Observation Sr. No. : 9040
3. Observer : Rajeshwari Dutta, Neeraj Gupta, Raghunathan Srianand
4. Observer's Email : rdutta@iucaa.in, ngupta@iucaa.in, anand@iucaa.in
5. Project Name : Probing small-scale structures in the extended HI disk of a z~0.02 galaxy
6. Project Code : 31_081
7. Operator(s) : Deepak, Pramod, Rupsing, Shilpa
8. Command File : /odisk/gtac/cmd/31_081/obs.cmd
9. LTA File : /gsbifrdata1/04dec/31_081_04dec2016.lta.1, /gsbifrdata1/04dec/31_081_04dec2016.lta
10. LogFlag File : /odisk/online1/logflags/31_081.FLAGS.3, /odisk/online1/logflags/31_081.FLAGS.2

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1389.4701 MHz ,RF2 : 1389.4701 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1325 MHz, ILO2 : 1325MHz , IVLO1 : 64.4701 MHz, IVLO2 : 64.4701 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 6 MHz,ON, IF-CH2 : 4+14 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 : 4 MHz; Step # 1
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 135.5299
28. LO5 -2  : 169.4701

29. Frequency Parameters (TPA) : 1389.4701 1389.4701 1325 1325 64.4701 64.4701
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :27

32. Name of Non-Working Antennas (with reason for each) :
C12 : All MCM timeout.
E04 : ABC timeout.
W06 : Frequently getting reset.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 04 Dec 2016 16:46:00 - 05 Dec 2016 02:00:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :29

37. Comments (During Observations) :
16:46 : Started setup for L-band.
17:00 : Started grid pointing.
17:12 : MSEB power failed.

17:17 : All antennas are started on generator.
        Started settings.
17:48 : Started grid pointing.
18:05 : Grid pointing over.
        Started settings.

18:16 : Started scan on 3C48.
18:27 : Stopped scan.

18:30 : '/odisk/gtac/cmd/31_081/obs.cmd' command file started.
19:14 : MSEB power resumed (All arm antennas got abc reset).
        Started settings for arm antennas.
19:32 : Arm antennas started working except C12.
19:43 : Some antennas shows high self power, so restarted GSB.

19:46 : E04, W06 started working. 
19:47 : Started scan on 3C48.
        
19:59 : Stopped scan.

20:04 : Restarted command file.
01:07 : Stopped command file.
01:08 : Started scan on 3C48.
01:29 : Stopped scan and observation session is over.