GTAC Observation Log

1. Date : 18/12/2016
2. Observation Sr. No. : 9072
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, Pramod, Rupsing, Sachin
8. Command File : /odisk/gtac/cmd
9. LTA File : /gsbifrdata/18dec/31_057_325_18dec2016.lta, /gwbifrdata/18dec/31_057_500_18dec2016.lta, /gwbifrdata/18dec/31_057_1460_18dec2016.lta
10. LogFlag File : /odisk/online1/logflags/SUBA2.FLAGS.1024, /odisk/online1/logflags/31_057.FLAGS.5

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 : OFF
22. Beam - 2 : Volt
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 :30

32. Name of Non-Working Antennas (with reason for each) :

33. Note for Backup :

34. Start and End Time of Obs.(IST): 18 Dec 2016 12:00:00 - 18 Dec 2016 16:05:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :30

37. Comments (During Observations) :
11:00 : Started set up.
Split the antennas ,

# 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 GSB GAC : C00 C01 C02 C05 C09 C10 C13 C14 W01 S01

Antennas selected in GWB GAC : 
# 325MHz # suba 2 # C00 C01 C02 C05 C13 (Broadband antennas)
# 1420MHz # suba 4 # C03 C04 C06 C08 C11 E02 E03 S02 S03 W02 W03 

Antennas connected in GWB : C00 C01 C02 C03 C04 C05 C06 C08 C11 C13 E02 E03 S02 S03 W02 W03 

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11:45 : Power equalized and phasing done on 3C286.
11:50 : Phasing done on 1311-222.
11:58:36 : Started scan on J1455-3330 for ~ 20.469 min.
12:22:36 : Started scan on 1830-360 for ~ 2.14748 min.
12:25:19 : Started scan on 1830-360 for ~ 0.805306 min.
12:27:40 : Started scan on J1614-2230 for ~ 20.6695 min.
12:51:48 : Started scan on 1609+266 for ~ 1.87905 min.
12:54:09 : Started scan on 1609+266 for ~ 0.805306 min.
12:56:32 : Started scan on J1640+2224 for ~ 20.4011 min.
13:21:33 : Started scan on 1822-096 for ~ 1.87905 min.
13:24:04 : Started scan on 1822-096 for ~ 1.61061 min.
13:26:01 : Started scan on 1822-096 for ~ 1.87905 min.
13:30:49 : Started scan on J1713+0747 for ~ 20.9379 min.
13:53:57 : Started scan on 1822-096 for ~ 2.41592 min.
13:57:03 : Started scan on 1822-096 for ~ 0.53687 min.
13:59:24 : Started scan on J1730-2304 for ~ 22.2801 min.
14:23:48 : Started scan on 1822-096 for ~ 0.53687 min.
14:26:42 : Started scan on J1738+0333 for ~ 20.6695 min.
14:49:19 : Started scan on 1822-096 for ~ 2.14748 min.
14:51:52 : Started scan on 1822-096 for ~ 1.87905 min.
14:55:14 : Started scan on J1857+0943 for ~ 20.6695 min.
15:18:49 : Started scan on 1830-360 for ~ 2.68435 min.
15:21:52 : Started scan on 1830-360 for ~ 1.34218 min.
15:24:27 : Started scan on J1909-3744 for ~ 19.3273 min.

15:43 : E-arm power failure, stopped recording.
15:56 : Started phasing on 2202+422.
04:00 : observation closed due to time constraints.