GTAC Observation Log

1. Date : 31/07/2016
2. Observation Sr. No. : 8787
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 : 30_068
7. Operator(s) : Sachin
8. Command File : /odisk/gtac/cmd/nissim/1522\+2119.cmd, /odisk/gtac/cmd/nissim/2039\+187.cmd
9. LTA File : /gsbifrdata/31jul/30_068_31jul2016.lta.1, /gsbifrdata/31jul/30_068_31jul2016.lta, /gwbifrdata1/31jul/30_068_31jul2016_gwb.lta
10. LogFlag File : /odisk/online1/logflags/30_068.FLAGS.14, /odisk/online1/logflags/30_068.FLAGS.13

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 451.2 MHz ,RF2 : 451.2 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 520 MHz, ILO2 : 520MHz , IVLO1 : 68.8 MHz, IVLO2 : 68.8 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 # 1
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 131.2
28. LO5 -2  : 173.8

29. Frequency Parameters (TPA) : 451.2 451.2 520 520 68.8 68.8
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :28

32. Name of Non-Working Antennas (with reason for each) :
C12 : MCM 5 timed out.
W04 : No fringe.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 31 Jul 2016 18:00:00 - 31 Jul 2016 23:00:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :28

37. Comments (During Observations) :
18:05 : Competed setup.
Line frequency : 448.0 MHz

All ALCs ON

   RF Band     : 327 MHz
   LO(1)       : 520 MHz
   IF BW       : 6 MHz
   LO(5)       : 131.2 173.8 MHz
   LO(4)       : 68.8 68.8 MHz
   Baseband BW : 2.08 MHz
   Step        : 1

   Channels    : 512

   lta         : 8m

TPA 451.2 451.2 520 520 68.8 68.8

The band should cover 447.03 - 449.12 MHz
18:03:09 : Started scan on 3C286 for ~ 6.97932 min.
18:20:43 : Started scan on 1549+214 for ~ 5.63714 min.
18:30:02 : Started scan on 1522+2119 for ~ 40.2653 min.
19:12:27 : Started scan on 1549+214 for ~ 5.63714 min.
19:21:49 : Started scan on 1522+2119 for ~ 39.7284 min.
20:16:50 : Started scan on 1549+214 for ~ 5.90557 min.
20:25:56 : Started scan on 1522+2119 for ~ 39.9968 min.
21:08:45 : Started scan on 1549+214 for ~ 5.63714 min.
21:17:39 : Started scan on 3C286 for ~ 4.5634 min.

21:35 : Completed second setup.
Line frequency : 378.57 MHz

All ALCs ON

   RF Band     : 327 MHz
   LO(1)       : 309 MHz
   IF BW       : 6 MHz
   LO(5)       : 133.5 171.5 MHz
   LO(4)       : 66.5 66.5 MHz
   Baseband BW : 2.08 MHz
   Step        : 1

   Channels    : 512

   lta         : 8m

TPA 375.5 375.5 309 309 66.5 66.5

The band should cover 379.67 - 377.58 MHz

21:38:20 : Started scan on 3C286 for ~ 6.71088 min.
21:54:36 : Started scan on 2035+189 for ~ 6.97932 min.
22:04:44 : Started scan on 2039+187 for ~ 39.9968 min.
22:45:53 : Started scan on 2035+189 for ~ 6.71088 min.
22:55 : Stopped command file and closed observation session.