GTAC Observation Log

1. Date : 07/01/2017
2. Observation Sr. No. : 9116
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) : Pramod
8. Command File : /odisk/gtac/cmd
9. LTA File : /gwbifrdata/07jan/31_057_07jan2017_500lo_gwb.lta, /gwbifrdata/07jan/31_057_07jan2017_1460lo_gwb.lta
10. LogFlag File : /odisk/online1/logflags/31_057B.FLAGS.2, /odisk/online1/logflags/31_057B.FLAGS.1, /odisk/online1/logflags/31_057.FLAGS.11, /odisk/online1/logflags/31_057.FLAGS.10

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1454 MHz ,RF2 : 1454 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1505 MHz, ILO2 : 1505MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+4 dB, 32 MHz,OFF, IF-CH2 : 24+4 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 : IA
22. Beam - 2 : PA
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) : 1454 1454 1505 1505 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) :
C08 : Frequently getting in reset.
C09 ,C10,C11,C13,E04,S01 : Servo problem

33. Note for Backup :

34. Start and End Time of Obs.(IST): 07 Jan 2017 01:00:00 - 07 Jan 2017 04:00:00

35. ONLINE Machine : Lenyadri

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

37. Comments (During Observations) :
01:00 : Started set up.
01:00 to 01:45 : Online problem.

# sub 2 # 325MHz # C00 C01 C02 C05 C12
ante 5 7 6 5 19 2
cp 0;defs 2;subar 2

# sub 4 # 1420MHz # C03 C04 C06 C08 C09 C10 C11 C13 C14 W01 W02 W03 W04 W05 W06 E02 E03 E04 E05 E06 S01 S02 S03 S04 S06
ante 25 1 3 20 24 4 12 9 11 10 8 13 14 15 16 25 17 18 21 22 23 26 27 28 29 30
cp 0;defs 4;subar 4

Antennas Selected in GAC for 325MHz  : C00  C02 C05 C12 = 4
Antennas Selected in GAC for 1420MHz : C03,C04,C06,C14,E02,E03,W02,W03,W04,S02,S03 = 11
-------------------------------------------------------------------------

01:45 : 02:08 : Power equalized and phasing done on 0432+416.
02:15:10 : Started scan on J0645+5158 for ~ 23.846 min.
02:43:26 : Started scan on 0744-064 for ~ 2.058 min.
02:45:38 : Started scan on 0744-064 for ~ 1.29744 min.
02:49:00 : Started scan on J0613-0200 for ~ 13.2875 min.
03:04:39 : Started scan on J0751+1807 for ~ 20.3116 min.
03:27:54 : Started scan on 0834+555 for ~ 2.058 min.
03:30:15 : Started scan on 0834+555 for ~ 0.715827 min.
03:33:09 : Started scan on J1012+5307 for ~ 21.9669 min.
04:00 :  Stopped scan and observation session is over.