GTAC Observation Log 

1. Date : 23/9/2013
2. Observation Sr. No. : 6714
3. Observer : Nissim Kanekar,Jayaram Narayanan Chengalur
4. Observer's Email : nkanekar@ncra.tifr.res.in,chengalur@ncra.tifr.res.in
5. Project Name : The spin temperature of high-redshift damped Lyman-alpha systems
6. Project Code : 24_055
7. Operator(s) : Pramod,Sachin,Surender
8. Command File : /odisk/gtac/cmd/nissim/0537-286.cmd
9. LTA File : /gsbifrdata/23sep/24_055_23sep2013.lta,
10. LogFlag File : /odisk/online1/logflags/24_055.FLAGS.9,

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 354.3 MHz ,RF2 : 354.3 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 287 MHz, ILO2 : 287 MHz , IVLO1 : 67.3 MHz, IVLO2 : 67.3 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 6 MHz,ON, IF-CH2 : 4+12 dB, 6 MHz,ON

GSB SETTINGS :

14. GSB Mode : Realtime 
15. GSB LTA : 8 
16. GSB CTRL : ONLINE 
17. GSB Fstop : ON 
18. GAIN EQ : ON 
19. Stokes : TotIntensity
20. Beam - 1 : OFF
21. Beam - 2 : OFF
22. ACQ BW : 16.67 MHz
23. Final BW : 2.08 MHz; Step # 1
24. Maximum Channels : 512 
25. Channel Numbers : 0:511:1 
26. LO5 -1  : 132.70 
27. LO5 -2  : 172.30 

28. Frequency Parameters (TPA) : 354.3 354.3 287 287 67.3 67.3.
29. Integration Time : 16.106112 Sec.
30. No of Antennas Working(Fringing) at the begining :28

31. Name of Non-Working Antennas (with reason for each) :
S03 : BLDC
E04 : Servo time out.



32. Note for Backup :

33. Start and End Time of Obs.(IST): 01:30 - 09:08

34. ONLINE Machine : Shivneri

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

36. Comments (During Observations) :
01:30 : Started set up for 325MHz.
01:51 : Started scan 3C147.
02:05 : Stopped scan on 3C147.
02:10 : Started scan on 0521-207.
 Because of  strong scintillation again taken scan on 3C147 for 20 min.
02:45 : Stated command file.
         '/odisk/gtac/cmd/nissim/0537-286.cmd'
08:47 : Stopped command file.
08:51 : Started scan on 3C147.
09:08 : Stopped scan and observing session is over.