GTAC Observation Log

1. Date : 21/02/2017
2. Observation Sr. No. : 9211
3. Observer : Nissim Kanekar, Jayaram Narayanan Chengalur, Jason X. Prochaska
4. Observer's Email : nkanekar@ncra.tifr.res.in, chengalur@ncra.tifr.res.in, xavier@ucolick.org
5. Project Name : %latex% The Spin Temperature of High-Redshift Damped Lyman-$\\\\alpha$ systems
6. Project Code : 31_094
7. Operator(s) : Deepak, Navnath, Shilpa
8. Command File : /odisk/gtac/cmd/nissim/0407-4409.cmd,, /odisk/gtac/cmd/nissim/1157\+014.cmd
9. LTA File : /gsbifrdata1/20feb/31_094_20feb2017.lta.2, /gsbifrdata1/20feb/31_094_20feb2017.lta.1, /gsbifrdata1/20feb/31_094_20feb2017.lta, /gwbifrdata/20feb/31_094_20feb2017_480_25_70.lta.2, /gwbifrdata/20feb/31_094_20feb2017_480_25_70.lta.1, /gwbifrdata/20feb/31_094_20feb2017_480_25_70.lta
10. LogFlag File : /odisk/online1/logflags/31_094.FLAGS.6, /odisk/online1/logflags/31_094.FLAGS.5

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 495 MHz ,RF2 : 495 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 560 MHz, ILO2 : 560MHz , IVLO1 : 65 MHz, IVLO2 : 65 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_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 : 2 MHz; Step # 3
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 135
28. LO5 -2  : 170

29. Frequency Parameters (TPA) : 495 495 560 560 65 65
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :29

32. Name of Non-Working Antennas (with reason for each) :
C03 : Servo problem.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 20 Feb 2017 18:15:00 - 21 Feb 2017 01:00:00

35. ONLINE Machine : Lenyadri

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

37. Comments (During Observations) :
GWB Settings for all observations : 
   ACQ BW       : 100 MHz
   GAB LO	: 480 MHz
   Channels     : 8192 
   LTA          : 8
   Stokes       : 2
   TPA frequency: Manual (LOCAL)
   Sideband FLAG: Flipped (LSB)
   Decimation factor: 4
   Final BW	: 25 MHz
   DDC LO	: 70 MHz
   Channel 1	: 410 MHz
   Channel 8192 : 385 MHz
---------------------------------------------------------------------------
---------------------------------------------------------------------------
---------------------------------------------------------------------------
18:15 : Started settings.

Settings for Observation-1:
   RF Band     : 327 MHz
   LO(1)       : 560 MHz
   IF BW       : 18 MHz
   LO(5)       : 135 170 MHz
   LO(4)       : 65 65 MHz
   Baseband BW : 2.08 MHz
   Step        : 3
   Channels    : 512
   TPA 495 495 560 560 65 65

18:39 : '/odisk/gtac/cmd/nissim/0407-4409.cmd' command file started.
21:17 : Stopped command file.

21:26 : Started scan on 3C147.
21:34 : Stopped scan.
---------------------------------------------------------------------------
21:35 : Changed the settings.

Settings for Observation-2:
  RF              : 325 MHz
    IF BW           : 18 MHz
    Final BW        : 2.08 MHz
    LO(1)           : 555 MHz
    LO(5)           : 136.8 168.2 MHz
    LO(4)           : 63.2 MHz
    Step            : 4
    Channels 512
    TPA 491.8 491.8 555 555 63.2 63.2

21:45 : '/odisk/gtac/cmd/nissim/1157+014.cmd' command file started.
22:36 : Started scan on phase cal.
22:42 : observation run finished.
22:49 : Started settings.

   RF Band     : 327 MHz
   LO(1)       : 520 MHz
   IF BW       : 18 MHz
   LO(5)       : 138.5 166.5 MHz
   LO(4)       : 61.5 61.5 MHz
   Baseband BW : 2.08 MHz
   Step        : 3

   Channels    : 512
   lta         : 8m

TPA 458.5 458.5 520 520 61.5 61.5

22:54 : Started command file.
         "/odisk/gtac/cmd/nissim/j1301+1904.cmd"
01:00 : Stopped command file and observation session over.