GTAC Observation Log 

1. Date : 20/02/2011
2. Observation Sr. No. : 5256
3. Observer : Sandeep Sirothia, Ishwar Chandra
4. Observer's Email : sirothia@ncra.tifr.res.in,ishwar@ncra.tifr.res.in
5. Project Name : The GMRT extra-galactic sky survey at 150 MHz
6. Project Code : 19_043
7. Operator(s) : Deepak,
	Manisha,
	Nilesh,
	Rupsingh,
	Santaji,
	Shilpa
8. Command File : /odisk/gtac/cmd/sirothia/loop1to2.cmd,
	/odisk/gtac/cmd/sirothia/loop3to5.cmd
9. LTA File : /rawdata/20feb/19_043_20feb2011.lta,
	/rawdata1/20feb/19_043_20feb2011.ltb,
	
10. GSB File : /gsbifrdata/20feb/19_043_20feb2011_gsb.lta
11. LogFlag File : /odisk/online1/logflags/19_043.FLAGS.69

ANTENNA SETTINGS :

12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB
13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 218 MHz, ILO2 : 218 MHz, IVLO1 : 62 MHz, IVLO2 : 62 MHz
14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 16 MHz,OFF, IF-CH2 : 10+12 dB, 16 MHz,OFF
15. BB BW(KHz) & BB ALC : 16000 KHz, OFF

CORRELATOR SETTINGS :

GHB Settings :
16. GHB Channels : 0:127:1
17. Correlator Mode : UsbPolar
18. Frequency Parameters (TPA) : 156 156 218 218 62 62 

GSB Settings :
19. Maximum Channels : 256 
20. Final Bandwidth (MHz): OFF MHz; Step # 0
21. IFBW (MHz) : LO5 (KHz) : 16:138000-167000
22. Stokes : Full_Polar
23. Beam - 1 : IA
24. Beam - 2 : PA

25. Integration Time : 128 LTA ~ 16.908 Sec.
26. No of Antennas Working(Fringing) :29

27. Name of Non-Working Antennas (with reason for each) :
C04 : BLDC maintenance.

28. Note for Backup :--

29. Start and End Time of Obs.(IST): 17:30 - 07:50

30. ONLINE Machine : Lenyadri

31. Comments (During Observations) :
-------------------
2s data files :
/rawdata/20feb/19_043_20feb2011_2s.lta,
/rawdata1/20feb/19_043_20feb2011_2s.ltb
/gsbifrdata1/20feb/19_043_20feb2011_gsb_2s.lta 
----------------

17:42 : Started scan on 3C48.
18:49 : Stopped scan.
18:51 : Started scan on J0218+4232.
19:18 : Stopped scan.
19:22 : Started command file
       '/odisk/gtac/cmd/sirothia/loop1to2.cmd'.
00:44 : Stopped command file.

00:46 : '/odisk/gtac/cmd/sirothia/loop3to5.cmd' command file started.
------------------------------------------------------------------------------------------- 
 03:37:55 : #### WARNING!!! #### PARK ARRAY : E05 1 min avg wind >= 40 kmph. Vals= 42.3 1.0
 03:37:54 SpotWind >= 35.0 kmph : E05 (40.0,1.0) 
 ### WARNING !!! #### PARK ARRAY : Wind speed high
 03:37:56 SpotWind >= 35.0 kmph : E05 (37.0,1.0) 
 ### WARNING !!! #### PARK ARRAY : Wind speed high
 03:37:58 SpotWind >= 35.0 kmph : E05 (36.0,1.0), E06 (37.0,22.0) 
 ### WARNING !!! #### PARK ARRAY : Wind speed high
 ### WARNING : SSC EVENT E06 : WIND VEL HIGH 
 ### WARNING : SSC EVENT E06 : WIND VEL HIGH 
 03:37:55 SpotWind >= 35.0 kmph : E06 (30.0,47.0) 
 ### WARNING !!! #### PARK ARRAY : Wind speed high
 03:38:00 SpotWind >= 35.0 kmph : E06 (30.0,47.0) 
 ### WARNING !!! #### PARK ARRAY : Wind speed high
 03:38:02 SpotWind >= 35.0 kmph : E05 (36.0,1.0), E06 (27.0,41.0) 
 ### WARNING !!! #### PARK ARRAY : Wind speed high
 03:38:02 SpotWind >= 35.0 kmph : E05 (36.0,1.0), E06 (27.0,41.0) 
--------------------------------------------------------------------------------------------
03:40 : Stopped command file because of high wind.

07:30 : started scan on 3C286.
07:51 : stopped das & observation session.

-------------
Note: delay jumps are found in following antennas (ref : E06).
USB : S03-175, C08-175.
LSB : S03-130.
GSB : S02,S04,S06.