GTAC Observation Log

1. Date : 04/03/2017
2. Observation Sr. No. : 9234
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) : Navnath, Nilesh, Pramod
8. Command File : /odisk/gtac/cmd/nissim/1215\+333.cmd, /odisk/gtac/cmd/nissim/j1419\+0759.cmd
9. LTA File : /gsbifrdata1/03mar/31_094_03mar2017_545lo.lta, /gsbifrdata1/03mar/31_094_03mar2017_470lo.lta
10. LogFlag File : /odisk/online1/logflags/31_094.FLAGS.9, /odisk/online1/logflags/31_094.FLAGS.8

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 476.8 MHz ,RF2 : 476.8 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 545 MHz, ILO2 : 545MHz , IVLO1 : 68.2 MHz, IVLO2 : 68.2 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_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 # 1
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 131.8
28. LO5 -2  : 173.2

29. Frequency Parameters (TPA) : 476.8 476.8 545 545 68.2 68.2
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) :
E03 : Feed cage painting.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 03 Mar 2017 21:00:00 - 04 Mar 2017 03:40:00

35. ONLINE Machine : Lenyadri

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

37. Comments (During Observations) :
21:00 : Started set up.

Line frequency : 473.64 MHz

All ALCs ON

    RF Band     : 327 MHz
    LO(1)       : 545 MHz
    IF BW       : 6 MHz
    LO(5)       : 131.8 173.2 MHz
    LO(4)       : 68.2 68.2 MHz
    Baseband BW : 2.08 MHz
    Step        : 1

    Channels    : 512
    lta         : 4

TPA 476.8 476.8 545 545 68.2 68.2

The band covers 472.5 MHz - 474.6 MHz

21:20 : Started command file.
  '/odisk/gtac/cmd/nissim/1215+333.cmd'
23:03 : Stopped command file and started scan on 1156+314 for ~ 6min.

23:10 : changed settings.

Line frequency : 398.67 MHz

All ALCs ON

   RF Band     : 327 MHz
   LO(1)       : 470 MHz
   IF BW       : 18 MHz
   LO(5)       : 138 167 MHz
   LO(4)       : 62 62
   Baseband BW : 2.08 MHz
   Step        : 4

   Channels    : 512
   lta         : 8m

TPA 408 408 470 470 62 62

The band covers 399.667 - 397.584 MHz

23:22 : Started command file.
         '/odisk/gtac/cmd/nissim/j1419+0759.cmd'

03:10 : All Antennas got ABC time out.
        

03:20 : Stopped recording and Tried restarting online user/ and whole online software. 

03:40 : closed/aborted the observations.