GTAC Observation Log 

1. Date : 11/02/2011
2. Observation Sr. No. : 5237
3. Observer : Nissim Kanekar, Jayaram Chegalur
4. Observer's Email : nkanekar@ncra.tifr.res.in,chengalu@ncra.tifr.res.in
5. Project Name : A GMRT survey for HI-21cm absorption in strong MgII absorbers in the redshift desert
6. Project Code : 19_066
7. Operator(s) : Navanath,
	Nilesh,
	Sachin,
	
8. Command File : /odisk/gtac/cmd/nissim/1520+1601.cmd
9. LTA File : /rawdata/11feb/19_066_11feb2011.lta,
	/rawdata1/11feb/19_066_11feb2011.ltb,
	
10. GSB File : /gsbifrdata/11feb/19_066_11feb2011_gsb.lta,
	/gsbifrdata/11feb/19_066_11feb2011_gsb.lta.1,
	
11. LogFlag File : /odisk/online1/logflags/19_066.FLAGS.21

ANTENNA SETTINGS :

12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 653.7 MHz ,RF2 : 653.7 MHz, SA1 : 0 dB, SA2 : 0 dB
13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 585 MHz, ILO2 : 585 MHz, IVLO1 : 68.7 MHz, IVLO2 : 68.7 MHz
14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON
15. BB BW(KHz) & BB ALC : 2000 KHz, ON

CORRELATOR SETTINGS :

GHB Settings :
16. GHB Channels : 0:127:1
17. Correlator Mode : UsbHighRes
18. Frequency Parameters (TPA) : 653.7 653.7 585 585 68.7 68.7 

GSB Settings :
19. Maximum Channels : 512 
20. Final Bandwidth (MHz): 4 MHz; Step # 2
21. IFBW (MHz) : LO5 (KHz) : 16:138000-167000
22. Stokes : Total_Intensity
23. Beam - 1 : IA
24. Beam - 2 : PA

25. Integration Time : 16 LTA ~ 2.114 Sec.
26. No of Antennas Working(Fringing) :28

27. Name of Non-Working Antennas (with reason for each) :
C09 : For servo maintenance.
C11 : Servo problem.
28. Note for Backup :--

29. Start and End Time of Obs.(IST): 05:30 - 10:57

30. ONLINE Machine : Lenyadri

31. Comments (During Observations) :
05:31 : Started scan on 3c286 for ~15min.
05:55 : Started command file.
'/odisk/gtac/cmd/nissim/1520+1601.cmd'.
05:58 : Stopped scan and command file.

Changed Total no.of chan for GSB from 256 to 512.
And re-started GSB.

06:04 : Started scan on 3c286 for ~15min.
06:23 : Started command file.

    '/odisk/gtac/cmd/nissim/1520+1601.cmd'.
10:35 : cmd file stopped.
10:38 : Started scan on phase cal.
10:47 : Started scan on 3C295 
10:58 : Observing session over.
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