GTAC Observation Log

1. Date : 29/01/2017
2. Observation Sr. No. : 9167
3. Observer : Ashok Kumar Singal, Shweta Srivastava
4. Observer's Email : asingal@prl.res.in, srivashweta@gmail.com
5. Project Name : The Largest Radio Quasar!
6. Project Code : 31_047
7. Operator(s) : Nilesh
8. Command File : /odisk/gtac/cmd/31_047/29jan17/obs_29jan.cmd
9. LTA File : /gsbifrdata1/29jan/31_047_29jan2017.lta
10. LogFlag File : /odisk/online1/logflags/31_047.FLAGS.1

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 629 MHz ,RF2 : 253 MHz, SA1 : 0 dB, SA2 : 14 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 680 MHz, ILO2 : 304MHz , IVLO1 : 51 MHz, IVLO2 : 51 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 : 33.333333 MHz
24. Final BW : 0 MHz; Step # 0
25. Maximum Channels : 256
26. Channel Numbers : 0:255:1
27. LO5 -1  : 149
28. LO5 -2  : 156

29. Frequency Parameters (TPA) : 629 253 680 304 51 51
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :23

32. Name of Non-Working Antennas (with reason for each) :
C00 : Servo problem
C01 : Servo problem
C03 : Servo problem
S02 : Servo problem
W02 : Servo problem
W04 : Servo problem
W05 : Servo problem
33. Note for Backup :

34. Start and End Time of Obs.(IST): 29 Jan 2017 02:00:00 - 29 Jan 2017 06:00:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :23

37. Comments (During Observations) :
01:55 : Started settings.

Antennas working @ 610 MHz = 23 (Channel 1):
C02  C04  C05  C06  C08  C09  C10  C11  C12  C13  C14
E02  E03  E04  E05  E06  S01  S03  S04  S06  W01  W03  W06

Antennas working @ 235 MHz = 11 (Chennel 2):
C04  C08  C11  C12  C14  E03  E04  E05  S01  S04  W03

Note: Following antennas do not have 610-235 coaxial FEED.
C02  C05  C06  C09  C10  C13  E02  E06  S03  S06  W01  W06

02:07 : Started scan on 3C286 for ~ 21 min.
02:32 : Started command file.
        /odisk/gtac/cmd/31_047/29jan17/obs_29jan.cmd

05:37 : Stopped command file.
05:47 : Started scan on 3C286.
06:03 : Stopped scan and closed observation.