GTAC Observation Log

1. Date : 28/01/2017
2. Observation Sr. No. : 9164
3. Observer : Krishnakumar MA, BHAL CHANDRA JOSHI, Periasamy K. Manoharan
4. Observer's Email : kkma@ncra.tifr.res.in, bcj@ncra.tifr.res.in, mano@ncra.tifr.res.in
5. Project Name : Study of electron density irregularities in the Gum nebula using pulsars
6. Project Code : 31_087
7. Operator(s) : Navnath, Nilesh, Pramod
8. Command File : /odisk/gtac/cmd
9. LTA File : /gsbifrdata1/27jan/u31_087_27jan2017.lta.1, /gsbifrdata1/27jan/u31_087_27jan2017.lta, /gwbifrdata/27jan/31_087_27jan2017.lta
10. LogFlag File : /odisk/online1/logflags/31_087.FLAGS.1

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 326 MHz ,RF2 : 326 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 275 MHz, ILO2 : 275MHz , 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) : 326 326 275 275 51 51
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :29

32. Name of Non-Working Antennas (with reason for each) :
C03 : Servo problem

33. Note for Backup :

34. Start and End Time of Obs.(IST): 27 Jan 2017 20:00:00 - 28 Jan 2017 03:00:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :29

37. Comments (During Observations) :
08:00 : Started set up.
08:40 : Power equalized and phasing done on 0837-198.

# GWB GAC configuration is as follows : 
# BEAM-1:130 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 W01 Total=15
# BEAM-1:175 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 W01 Total=15
# BEAM-2:130 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 W01 Total=15
# BEAM-2:175 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 W01 Total=15

20:52:56 : Started scan on 0837-198 for ~ 2.01326 min.
20:55:10 : Started scan on 0837-198 for ~ 1.07374 min.
20:58:43 : Started scan on B0736-40 for ~ 15.0324 min.
21:14:55 : Started scan on J0804-3647 for ~ 29.9305 min.
21:46:13 : Started scan on 0837-198 for ~ 2.01326 min.
21:48:30 : Started scan on 0837-198 for ~ 0.53687 min.
21:50:05 : Started scan on J0818-3049 for ~ 20.1326 min.
22:11:11 : Started scan on B0818-41 for ~ 30.0647 min.
22:44:01 : Started scan on 0837-198 for ~ 2.55013 min.
22:46:45 : Started scan on 0837-198 for ~ 0.53687 min.
22:48:35 : Started scan on J0835-3707 for ~ 40.1311 min.
23:29:59 : Started scan on 0837-198 for ~ 2.14748 min.
23:32:24 : Started scan on 0837-198 for ~ 0.53687 min.
23:34:40 : Started scan on B0833-45 for ~ 10.0663 min.

23:45 : GAB RF Filter for 250-500 MHz band added to the settings.
        then did power eq and phasing on 0837-198.

23:50:39 : Started scan on 0837-198 for ~ 2.14748 min.
23:53:02 : Started scan on 0837-198 for ~ 1.87905 min.
23:59:36 : Started scan on B0906-49 for ~ 30.0647 min.
00:31:54 : Started scan on 0837-198 for ~ 2.55013 min.
00:34:41 : Started scan on 0837-198 for ~ 0.53687 min.
00:37:09 : Started scan on J0905-4536 for ~ 40.1311 min.
01:19:01 : Started scan on 0837-198 for ~ 2.01326 min.
01:21:14 : Started scan on 0837-198 for ~ 0.53687 min.
01:23:40 : Started scan on J0901-4624 for ~ 39.9968 min.
02:05:32 : Started scan on 0837-198 for ~ 2.01326 min.
02:07:49 : Started scan on 0837-198 for ~ 0.53687 min.
02:09:52 : Started scan on B0903-42 for ~ 30.0647 min.
02:41:17 : Started scan on J0945-4833 for ~ 30.0647 min.
03:20:07 : Started scan on 3C286 for ~ 2.14748 min.
03:23:34 : Started scan on 3C286 for ~ 2.14748 min.

03:26 : Stopped observation session.