GTAC Observation Log

1. Date : 24/12/2018
2. Observation Sr. No. : 10756
3. Observer : Mousumi Das, Deepthi S Prabhu, Dwarakanath K.S.
4. Observer's Email : chandaniket@gmail.com, deepthi.prabhu@iiap.res.in, dwaraka@rri.res.in
5. Project Name : Mapping the HI disks of Extended UV Disk (XUV) Galaxies 
6. Project Code : 35_086
7. Operator(s) : Pramod, Sachin, Surender
8. Command File : /odisk/gtac/cmd/35_086/24dec18/obs_ngc5832.cmd
9. LTA File : /gsbifrdata1/23dec/35_086_23dec2018.lta, /gsbifrdata1/24dec/35_086_24dec2018.lta
10. LogFlag File : /odisk/online1/logflags/35_086.FLAGS.2, /odisk/online1/logflags/35_022.FLAGS.3

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1411.5612 MHz ,RF2 : 1411.5612 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1350 MHz, ILO2 : 1350MHz , IVLO1 : 61.5612 MHz, IVLO2 : 61.5612 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON

GSB SETTINGS :

14. GSB Host : gsbm1_shivneri
15. GSB Mode : Realtime
16. GSB LTA : 8
17. GSB CTRL : ONLINE
18. GSB Fstop : ON
19. GAIN EQ : ON
20. Stokes : Total_Intensity
21. Beam - 1 : OFF
22. Beam - 2 : OFF
23. ACQ BW : 16.666666 MHz
24. Final BW : 4 MHz; Step # 1
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 138.4388
28. LO5 -2  : 166.5612

29. Frequency Parameters (TPA) : 1411.5612 1411.5612 1350 1350 61.5612 61.5612
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :26

32. Name of Non-Working Antennas (with reason for each) :
C01 : Large servo offsets.
C08 : Low fringe.
E06 : Maintenance.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 23 Dec 2018 21:00:00 - 24 Dec 2018 13:10:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :26

37. Comments (During Observations) :
21:00:00 : Started set-up.
21:25:04 : Started scan on 3C147 for ~ 9.9321 min.
21:36:21 : Started command file.
            /odisk/gtac/cmd/35_086/23dec18/obs.cmd
04:47:00 : Stopped command file.
04:50:00 : Started scan on 3C147 for ~ 9.9321 min.
05:00:00 : Stopped command file.
-----------------------------------
05:00 : Started set-up for S1.
-------------------------------------
GSB line observation setup
RF band= 1390 (1330 - 1450)
LO1= 1350 (lower)
IFBW= 18
GSB [ACQ] BW= 16.6666
Total Channel= 512

Line/Center Frequency= 1418.2893
CH#[0]= 1420.3732
CH#[512]= 1416.2066
BW= -4.1666
CW= 8.14 (KHz.)

Digital SubBand/step#= 1 is USEABLE ###
GSB_CONFIG LO5= 137.96  167.04
LTA_FILE   L05= 129.6268  175.3732
BASE_BAND  LO4= 62.04  62.04
tpa 1412.04 1412.04 1350 1350 62.04 62.04
-----------------------------------------------
05:14:51 : Started scan on 3C286 for ~ 9.79788 min.
05:26:39 : Started command file.
            /odisk/gtac/cmd/35_086/24dec18/obs_ngc5832.cmd
Note : Low fringe observed to S04.
08:43 : S04 is fringing .
10:05 : C02 and W06 Taken for painting.
10:21 : Electrical power failure to west arm antennas.
10:21 to 10:35 :Electrical problem to West arm antennas.
10:35 : West arm antennas started fringing.
12:45 : Stopped command file.
12:48 : Started scan on 3C286.
13:00 : Stopped scan and observation session is over.