GTAC Observation Log

1. Date : 29/07/2017
2. Observation Sr. No. : 9615
3. Observer : Nirupam Roy, Nissim Kanekar, Jayaram Narayanan Chengalur, Narendranath Patra
4. Observer's Email : roy.nirupam@gmail.com, nkanekar@ncra.tifr.res.in, chengalur@ncra.tifr.res.in, narendra@ncra.tifr.res.in
5. Project Name : The Temperature of the Warm Neutral Medium in the Milky Way
6. Project Code : 32_056
7. Operator(s) : Pramod, Surender
8. Command File : /odisk/gtac/cmd
9. LTA File : /gsbifrdata/29jul/32_056_29jul2017.lta, /gwbifrdata2/29jul/32_056_29jul2017_gwb.lta
10. LogFlag File : /odisk/online1/logflags/32_056.FLAGS.3

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1411 MHz ,RF2 : 1411 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1350 MHz, ILO2 : 1350MHz , IVLO1 : 61 MHz, IVLO2 : 61 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 : Total_Intensity
21. Beam - 1 : OFF
22. Beam - 2 : OFF
23. ACQ BW : 16.666666 MHz
24. Final BW : 2 MHz; Step # 4
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 139
28. LO5 -2  : 166

29. Frequency Parameters (TPA) : 1411 1411 1350 1350 61 61
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) :
C03 : :  Servo Problem.
C06 : :  Servo Problem.
W03 : :  Strong RFI.
C02 :-130,C09-175,C10-130,E03,E04-175,S01-175 :  Low self power @GWB o/p.not getting power equalized.
33. Note for Backup :

34. Start and End Time of Obs.(IST): 29 Jul 2017 17:00:00 - 29 Jul 2017 22:10:00

35. ONLINE Machine : Lenyadri

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

37. Comments (During Observations) :
16:55 : Started setup.
17:02 : Electrical power glitch to all antennas.
17:10 : Restarted setup.
17:25 : Started command file.
18:38 : Electrical power glitch to all antennas.
19:00 : Restarted command file.
18:38 : S02 Servo Problem.
19:07 : C03 & C06 Released for observation.
19:38 : S02 released for observation.
21:45 : Stopped command file due to source below horizon.
21:48 : Started scan on 3C286.
22:10 : Stopped command file and observing session over.