GTAC Observation Log

1. Date : 23/07/2017
2. Observation Sr. No. : 9593
3. Observer : Yashwant Gupta, BHAL CHANDRA JOSHI, Nikhil Vijay Naik, Kishalay De, Yogesh Maan, Manjari Bagchi, Jayanta Roy, Gopakumar Achamveedu
4. Observer's Email : ygupta@ncra.tifr.res.in, bcj@ncra.tifr.res.in, naiknikhil27@gmail.com, ugkishalayde@ug.iisc.in, ymaan@ncra.tifr.res.in, manjari.bagchi@gmail.com, jroy@ncra.tifr.res.in, gopu.tifr@gmail.com
5. Project Name : Towards precision pulsar timing with the upgraded GMRT
6. Project Code : 32_032
7. Operator(s) : Nilesh, Pramod
8. Command File : /odisk/gtac/cmd
9. LTA File : /gwbifrdata2/22jul/32_032_850LO_22jul2017_gwb.lta, /gwbifrdata2/22jul/32_032_500LO_22jul2017_gwb.lta, /gwbifrdata2/22jul/32_032_1460LO_22jul2017_gwb.lta.1, /gwbifrdata2/22jul/32_032_1460LO_22jul2017_gwb.lta
10. LogFlag File : /odisk/online1/logflags/32_032C.FLAGS.5, /odisk/online1/logflags/32_032B.FLAGS.15, /odisk/online1/logflags/32_032.FLAGS.16

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 : 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) : 1454 1454 1505 1505 51 51
30. Integration Time : 4.0265 Sec
31. No of Antennas Working(Fringing) at the beginning :25

32. Name of Non-Working Antennas (with reason for each) :
W03 : RFI
S02 : Servo problem.
C00  C10 C12 : Feed problem but later on it is solved .

33. Note for Backup :

34. Start and End Time of Obs.(IST): 22 Jul 2017 19:00:00 - 23 Jul 2017 00:05:00

35. ONLINE Machine : Shivneri

36. No of Antennas Working(Fringing) at the end :25

37. Comments (During Observations) :
18:40 : Started pointing.

Antennas configuration.

# 325Mhz # sub 2 # C04 C06 C08 W01 S01
ante 5 3 20 24 8 26
cp 0;defs 2;subar 2

# 610MHz # sub 3 # C02 C03 C09 W02 E03 S03
ante 6 5 1 4 13 18 28
cp 0;defs 3;subar 3

# 1420 MHz # sub 4 # C00 C01 C05 C10 C11 C12 C13 C14 W03 W04 W05 W06 E02 E04 E05 E06 S02 S04 S06
ante 19 7 6 19 12 9 2 11 10 14 15 16 25 17 21 22 23 27 29 30
cp 0;defs 4;subar 4
-------------------------------------------------------------------------
# GWB GAC configuration is as follows : 
# BEAM-1:130 :: C04 C06 C08 S01 W01 Total=5
# BEAM-1:175 :: C04 C06 C08 S01 W01 Total=5
# BEAM-2:130 :: C00 C01 C05 C10 C11 C12 C13 C14 E02 E04 E05 E06 S04 S06 W04 W05 W06 Total=17
# BEAM-2:175 :: C00 C01 C05 C10 C11 C12 C13 C14 E02 E04 E05 E06 S04 S06 W04 W05 W06 Total=17
# BEAM-3:130 :: C02 C03 C09 E03 S03 W02 Total=6
# BEAM-3:175 :: C02 C03 C09 E03 S03 W02 Total=6

20:00 : Power equalized and phasing done on 3C286. 
20:06:46 : Started scan on 3C286 for ~ 5.27923 min.
20:30:29 : Started scan on 3C286 for ~ 4.47392 min.
20:42:09 : Started scan on 1311-222 for ~ 1.16322 min.
20:43:38 : Started scan on 1311-222 for ~ 0.805306 min.
20:46:18 : Started scan on J1455-3330 for ~ 20.3116 min.
21:09:52 : Started scan on 1822-096 for ~ 1.07374 min.
21:11:16 : Started scan on 1822-096 for ~ 0.805306 min.
21:14:10 : Started scan on J1614-2230 for ~ 20.2221 min.
21:39:51 : Started scan on 1609+266 for ~ 1.07374 min.
21:41:16 : Started scan on 1609+266 for ~ 0.805306 min.
21:44:09 : Started scan on J1640+2224 for ~ 20.2221 min.
22:10:09 : Started scan on 1822-096 for ~ 1.07374 min.
22:11:34 : Started scan on 1822-096 for ~ 0.805306 min.
22:15:14 : Started scan on J1713+0747 for ~ 20.3116 min.
22:38:39 : Started scan on 1822-096 for ~ 1.07374 min.
22:40:04 : Started scan on 1822-096 for ~ 0.715827 min.
22:42:57 : Started scan on J1730-2304 for ~ 20.2221 min.
23:05:26 : Started scan on 1822-096 for ~ 1.07374 min.
23:06:50 : Started scan on 1822-096 for ~ 0.715827 min.
23:09:58 : Started scan on J1738+0333 for ~ 20.3116 min.
23:32:36 : Started scan on 1822-096 for ~ 1.16322 min.
23:34:05 : Started scan on 1822-096 for ~ 0.715827 min.
23:36:59 : Started scan on J1857+0943 for ~ 20.2221 min.
00:00:05 : Started scan on 1830-360 for ~ 1.34218 min.

00:03 : Stopped observations.