GTAC Observation Log

1. Date : 04/07/2017
2. Observation Sr. No. : 9543
3. Observer : Russ Taylor, David Alan Green, Jeroen Maarten Stil, Paul Alexander, Julia Margaret Riley, Preshanth Jagannathan, Samuel Legodi, Julie K Grant
4. Observer's Email : russ@ras.ucalgary.ca, dag@mrao.cam.ac.uk, stil@ras.ucalgary.ca, p.alexander@mrao.cam.ac.uk, julia@mrao.cam.ac.uk, preshanthj@gmail.com, lgdlet001@myuct.ac.za, jgrant@ras.ucalgary.ca
5. Project Name : Completing the Deep Wide-Area 612-MHz Full-Stokes Survey of the ELAIS N1 Field
6. Project Code : 32_095
7. Operator(s) : Deepak, Pramod, Shilpa
8. Command File : /odisk/gtac/cmd/32_095/obs_03jul.cmd
9. LTA File : /gsbifrdata/03jul/32_095_03jul2017.lta.4, /gsbifrdata/03jul/32_095_03jul2017.lta.3, /gsbifrdata/03jul/32_095_03jul2017.lta.2, /gsbifrdata/03jul/32_095_03jul2017.lta.1, /gsbifrdata/03jul/32_095_03jul2017.lta
10. LogFlag File : /odisk/online1/logflags/32_095.FLAGS.4, /odisk/online1/logflags/32_095.FLAGS.3, /odisk/online1/logflags/32_095.FLAGS.2, /odisk/online1/logflags/32_095.FLAGS.1, /odisk/online1/logflags/32_050.FLAGS.2

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON

GSB SETTINGS :

14. GSB Host : gsbm1_shivneri
15. GSB Mode : Realtime
16. GSB LTA : 8
17. GSB CTRL : ONLINE
18. GSB Fstop : ON
19. GAIN EQ : ON
20. Stokes : Full_Stokes
21. Beam - 1 : OFF
22. Beam - 2 : OFF
23. ACQ BW : 33.333333 MHz
24. Final BW : 0 MHz; Step # 0
25. Maximum Channels : 256
26. Channel Numbers : 0:255:1
27. LO5 -1  : 149
28. LO5 -2  : 156

29. Frequency Parameters (TPA) : 591 591 540 540 51 51
30. Integration Time : 8.053 Sec
31. No of Antennas Working(Fringing) at the beginning :28

32. Name of Non-Working Antennas (with reason for each) :
S02 : Servo Problem.
W06 : Servo problem.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 03 Jul 2017 17:00:00 - 04 Jul 2017 04:00:00

35. ONLINE Machine : Shivneri

36. No of Antennas Working(Fringing) at the end :20

37. Comments (During Observations) :
17:00 : Started settings.
17:26 : Started scan on 3C286 for 10min.

17:38 : '/odisk/gtac/cmd/32_095/obs_03jul.cmd' command file started.
17:51 : W04 automatically got abc reset.
18:18 : W04 started working.

Note: From 20:39 - 23:14 : 130 pol no fringe (GSB problem)for following 8 antennas.
C00,C01,C02,C03,C09,C10,C11,C12.
22:58 : Stopped command file.

23:05 : After restarting GSB , problem solved.
23:14 : Restarted command file.

02:05 : 130 pol no fringe (GSB problem)for following 8 antennas.
C00,C01,C02,C03,C09,C10,C11,C12.
02:50 : After restarting GSB , problem solved.
02:55 : Restarted command file.
03:25 : GSB shows "2PLL on A/D Board is Not Locked! and Buffer loss" in Acq window
03:35 : After restarting GSB , problem not solved.
03:32 : Restarted command file.
04:00 : Stopped command file and observing session over.