GTAC Observation Log 

1. Date : 16/7/2011
2. Observation Sr. No. : 5447
3. Observer : Sowgat Muzahid,Neeraj Gupta,Srianand
4. Observer's Email : sowgat@iucaa.ernet.in,anand@iucaa.ernet.in,nrjgupta@gmail.com
5. Project Name : Understanding the nature of 21-cm absorbers through observations of quasar and radio source-galaxy pairs at z<0.1
6. Project Code : 20_037
7. Operator(s) : Manisha,
	Sachin,
	Shilpa
8. Command File : /odisk/gtac/cmd/neeraj/16jul2011/j0942.cmd,
	/odisk/gtac/cmd/neeraj/16jul2011/j1015.cmd,
	/odisk/gtac/cmd/neeraj/16jul2011/j1639.cmd
9. LTA File : /gsbifrdata/16jul/20_037_16jul2011.lta,
	/gsbifrdata/16jul/20_037_16jul2011.lta.1,
	/gsbifrdata/16jul/20_037_16jul2011.lta.2
10. LogFlag File : /odisk/online1/logflags/20_037.FLAGS.8,
	/odisk/online1/logflags/20_037.FLAGS.9,
	/odisk/online1/logflags/20_037.FLAGS.10

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1254.7 MHz ,RF2 : 1254.7 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1190 MHz, ILO2 : 1190 MHz , IVLO1 : 64.7 MHz, IVLO2 : 64.7 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON

GSB SETTINGS :

14. GSB Mode : RealTime 
15. GSB LTA : 8 
16. GAIN EQ : ON 
17. Stokes : Total_Intensity
18. Beam - 1 : OFF
19. Beam - 2 : OFF
20. ACQ BW : 16 MHz
21. Maximum Channels : 512 
22. IFBW (MHz) : LO5 (KHz) : Custom :- 16 : 135.3 - 169.7
23. Final Bandwidth (MHz): 4 MHz; Step # 1

24. Frequency Parameters (TPA) : 1254.7 1254.7 1190 1190 64.7 64.7.
25. Integration Time : 16.106 Sec.
26. No of Antennas Working(Fringing) :27

27. Name of Non-Working Antennas (with reason for each) :
C09 : Maintenance.
C11 : Maintenance.
W03 : LO1 unlock.

28. Note for Backup :--

29. Start and End Time of Obs.(IST): 09:50 - 01:00

30. ONLINE Machine : Shivneri

31. Comments (During Observations) :
--------------------------------------------------------------------------
Source : J0942+0623
tpa 1254.7 1254.7 1190 1190 64.7 64.7
Centre freq. : 1261MHz
IF BW : 16MHz
Final BW : 4MHz 
Step : 1
LO5 : 135.3,169.7
Total intensity with 512 channels.

09:50 : Started settings.
10:06 : Started scan on 3C147.
10:22 : Stopped scan.

10:26 : '/odisk/gtac/cmd/neeraj/16jul2011/j0942.cmd' command file started.
11:30 : W03 started working but low fringe.
14:27 : Stopped command file.

14:37 : Started scan on 3C147.
14:52 : Stopped scan.
--------------------------------------------------------------------------
14:53   Parked the antennas due to high wind.

 ### WIND NORMAL 15:11:25 USE ARRAY 
 
15:12 : Source J1015+1637
        RF-1347.12MHz
        Final BW-4MHz
        Step # 2
        LO1 -1275MHz
        LO5 138.3 & 166.7
15:34 : Started scan on 3C286.
15:49 : Stopped scan.
15:59 : Started command file
        '/odisk/gtac/cmd/neeraj/16jul2011/j1015.cmd'
19:46 : Stopped command file.
19:49 : Started scan on 3C286.
20:04 : Stopped scan.
----------------------------------------------------
20:05 : Source : J1639+1127.
Centre freq. : 1316.25MHz
 LO1 :1245MHz
 IF BW : 16MHz
 Final BW : 2MHz 
 Step : 4
 LO5 : 138.1,166.9
 
20:41 : command file started.
00:45 : stopped the command file and scan 
        started on 3c468.1

01:00 : stopped the scan and observation
        session over.