GTAC Observation Log 

1. Date : 10/8/2012
2. Observation Sr. No. : 6081
3. Observer : Somak Raychoudhury
4. Observer's Email : somak@star.sr.bham.ac.uk,ishwar@ncra.tifr.res.in
5. Project Name : Low-frequency Observations of Galaxy Groups: the History of AGN Heating
6. Project Code : 22_008
7. Operator(s) : Deepak,
	Manisha,
	Nilesh,
	Rupsingh,
	Sachin,
	Santaji,
	Shilpa
8. Command File : /odisk/gtac/cmd/22_008/source1.cmd,
	/odisk/gtac/cmd/22_008/source2.cmd,
	/odisk/gtac/cmd/22_008/source3.cmd
9. LTA File : /gsbifrdata/10aug/22_008_10aug2012_16s.lta,
	/gsbifrdata/10aug/22_008_10aug2012_4s.lta,
	/gsbifrdata1/11aug/22_008_11aug2012_4s.lta.1,
	/gsbifrdata1/11aug/22_008_11aug2012_4s.lta.2
10. LogFlag File : /odisk/online1/logflags/22_008.FLAGS,
	/odisk/online1/logflags/22_008.FLAGS.1

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218 MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 16 MHz,ON, IF-CH2 : 10+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 : 256 
22. IFBW (MHz) : LO5 (KHz) : 16:138000-167000
23. Final Bandwidth (MHz): OFF MHz; Step # 0

24. Frequency Parameters (TPA) : 156 156 218 218 62 62.
25. Integration Time : 4.027 Sec.
26. No of Antennas Working(Fringing) :28

27. Name of Non-Working Antennas (with reason for each) :
C14 : BLDC work 
W06 : No fringe.


28. Note for Backup :--

29. Start and End Time of Obs.(IST): 21:00 - 21:00

30. ONLINE Machine : Shivneri

31. Comments (During Observations) :
21:00 : Started scan on 3C286.
21:20 : Stopped scan.
21:32 : Command file started.

04:37 : command file stopped.
04:40 : Noticed problem in GSB. All antennas stopped working.
        Problem was started around 3 o'clock.
04:50 : Started scan on 3C147 for 15mins.

05:10 : After restarting GSB problem solved.
05:12 : Started new LTA file for source2 observation.
         /gsbifrdata1/11aug/22_008_11aug2012_4s.lta.1

05:14 : Started scan on 3C147 for 15mins.
05:30 : Started command file
        /odisk/gtac/cmd/22_008/source2.cmd
11:09 : Stopped command file.
11:13 : Started scan on 3C147.
11:29 : C11 taken for maint work.
11:44 : Stopped scan.

11:44 : Started scan on 3C147.
12:12 : Stopped scan.

12:22 : '/odisk/gtac/cmd/22_008/source3.cmd' command file started.
12:59 : C11 started working.
14:30 : W06 started working.
20:42 : stopped the command file.
20:45 : scan started on 3C286.
21:00 : stopped the scan and observation session over.