GTAC Observation Log

1. Date : 20/04/2018
2. Observation Sr. No. : 10186
3. Observer : Hariharan Krishnan, Divya Oberoi, Rohit Sharma, Atul Mohan, Surajit Mondal
4. Observer's Email : hara@ncra.tifr.res.in, div@ncra.tifr.res.in, rohit@ncra.tifr.res.in, atul@ncra.tifr.res.in, surajit@ncra.tifr.res.in
5. Project Name : Configuring the uGMRT as a Solar Monitoring Instrument : uGMRT Solar Spectrograph (uGSS)
6. Project Code : 34_028
7. Operator(s) : Nilesh
8. Command File : /odisk/gtac/cmd/34_028/sun_20180420.cmd
9. LTA File : /gwbifrdata/20apr/34_028_20apr2018_gwb.lta, /gwbifrdata/20apr/34_028B_20apr2018_gwb.lta, /gwbifrdata/20apr/34_028A_20apr2018_gwb.lta
10. LogFlag File : /odisk/online1/logflags/34_028B.FLAGS, /odisk/online1/logflags/34_028A.FLAGS, /odisk/online1/logflags/34_028.FLAGS

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 167 MHz ,RF2 : 167 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218MHz , 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) : 167 167 218 218 51 51
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :26

32. Name of Non-Working Antennas (with reason for each) :
C12 : Servo Maintenance.
C14 : Mechanical work.
W01 : FPS problem.
C05 : Painting work.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 20 Apr 2018 10:00:00 - 20 Apr 2018 12:15:00

35. ONLINE Machine : Shivneri

36. No of Antennas Working(Fringing) at the end :26

37. Comments (During Observations) :
10:00 : Started settings.

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 200.0000
GPU_FINAL_BW  	: 200.0000
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 8192
GPU_CHAN_NUM  	: 0:8191:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF2  	: 650  650
GPU_DDCLO2  	: 0.0000  0.0000
GPU_SB2  	: 1 1
GCODE2  	: 34_028A
GPU_RF3  	: 250  250
GPU_DDCLO3  	: 0.0000  0.0000
GPU_SB3  	: -1 -1
GCODE3  	: 34_028B
GPU_RF4  	: 250  250
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: 34_028
GPU_CNTRL  	: ONLINE
GPU_FSTOP  	: ON
GPU_BEAM_1  	: IA
GPU_BEAM_2  	: IA
GPU_BEAM_3  	: IA
GPU_BEAM_4  	: OFF
GPU_BM_INT  	: 64
GPU_GAINEQ  	: OFF
--------------------------------

SUBA # 4 ==>> BEAM 1 ==>> 130-260 MHz. (250 LSB)
SUBA # 3 ==>> BEAM 2 ==>> 250-500 MHz. (250 USB)
SUBA # 2 ==>> BEAM 3 ==>> 560-650 MHz. (650 LSB)

# GWB GAC configuration is as follows : 
# BEAM-1:130 :: C00 C03 C06 C08 C13 E02 E03 E04 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W05 W06 Total=21
# BEAM-1:175 :: C00 C03 C06 C08 C13 E02 E03 E04 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W05 W06 Total=21
# BEAM-2:130 :: C04 C10 C11 Total=3
# BEAM-2:175 :: C04 C10 C11 Total=3
# BEAM-3:130 :: C01 C02 C09 Total=3
# BEAM-3:175 :: C01 C02 C09 Total=3

10:15 : Started power eq on SUN00014.
          Note :
             Large Power variations in 150 MHz band.
             C11 - 175 pol (CH2) low self power.

11:00 : Started command file.
11:57 : Stopped command file.
12:02 : Started scan on 3C147.

12:10 : Stopped scan and closed observations.