GTAC Observation Log

1. Date : 06/01/2017
2. Observation Sr. No. : 9114
3. Observer : Yashwant Gupta, BHAL CHANDRA JOSHI, Jayanta Roy, Yogesh Maan, Kishalay De, Manjari Bagchi, Gopakumar Achamveedu, Nikhil Vijay Naik
4. Observer's Email : ygupta@ncra.tifr.res.in, bcj@ncra.tifr.res.in, jroy@ncra.tifr.res.in, ymaan@ncra.tifr.res.in, ugkishalayde@ug.iisc.in, manjari.bagchi@gmail.com, gopu.tifr@gmail.com, naiknikhil27@gmail.com
5. Project Name : Towards precision pulsar timing with the upgraded GMRT
6. Project Code : 31_057
7. Operator(s) : Nilesh
8. Command File : /odisk/gtac/cmd/31_057/06jan17.cmd
9. LTA File : /gwbifrdata/06jan/31_057_06jan2017_gwb_lband.lta, /gwbifrdata/06jan/31_057_06jan2017_gwb.lta
10. LogFlag File : /odisk/online1/logflags/31_057B.FLAGS, /odisk/online1/logflags/31_057.FLAGS.9

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+14 dB, 32 MHz,OFF, IF-CH2 : 24+14 dB, 32 MHz,OFF

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 : OFF
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) : 306 306 255 255 51 51
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :28

32. Name of Non-Working Antennas (with reason for each) :
C04 : : servo problem,
E05 : : Feed Jam

33. Note for Backup :

34. Start and End Time of Obs.(IST): 06 Jan 2017 08:00:00 - 06 Jan 2017 10:45:00

35. ONLINE Machine : Lenyadri

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

37. Comments (During Observations) :
08:00 : Started settings.
 
Antennas connected in GWB : C00 C01 C02 C03 C04 C05 C06 C08 C11 C13 E02 E03 S02 S03 W02 W03 

GWB settings : 200 MHz, 2K channels , PA-PA.

# 325MHz # suba 2 # C00 C01 C02 C05 C09 C10 C13 C14 W01 S01
ante 10 7 6 5 19 4 12 11 10 8 26
cp 0;defs 2;subar 2
tpa 306 306 255 255 51 51

# 1420MHz # suba 4 # C03 C04 C06 C08 C11 C12 W02 W03 W04 W05 W06 E02 E03 E04 E05 E06 S02 S03 S04 S06
ante 20 1 3 20 24 9 2 13 14 15 16 25 17 18 21 22 23 27 28 29 30
cp 0;defs 4;subar 4
tpa 1454 1454 1505 1505 51 51 

Antennas selected in GWB GAC : 
# 325MHz # suba 2 # C00 C01 C02 C05 C09 C10 C13 = 7
# 1420MHz # suba 4 # C03 C06 C11 E02 E03 S02 S03 = 7

      
09:09:00 : Started scan on 1822-096 for ~ 0.894784 min.
09:11:40 : Started scan on 1830-360 for ~ 1.43165 min.
09:13:32 : Started scan on 1830-360 for ~ 3.04227 min.
09:16:55 : Started scan on 1830-360 for ~ 1.07374 min.
09:21:13 : Started scan on 1830-360 for ~ 0.894784 min.
09:22:33 : Started scan on 1830-360 for ~ 0.53687 min.
09:25:31 : Started scan on J1738+0333 for ~ 20.2221 min.
09:48:56 : Started scan on 1822-096 for ~ 0.894784 min.
09:50:16 : Started scan on 1822-096 for ~ 0.715827 min.
09:53:47 : Started scan on J1857+0943 for ~ 20.2221 min.
10:17:35 : Started scan on 1830-360 for ~ 0.894784 min.
10:18:55 : Started scan on 1830-360 for ~ 0.53687 min.
10:21:44 : Started scan on J1909-3744 for ~ 20.0432 min.
10:45 : Stopped observations.