GTAC Observation Log

1. Date : 09/01/2022
2. Observation Sr. No. : 13844
3. Observer : Sangita Kumari, Bhaswati Bhattacharyya, Devojyoti Kansabanik, Jayanta Roy
4. Observer\'s Email : skumari@ncra.tifr.res.in, bhaswati@ncra.tifr.res.in, dkansabanik@ncra.tifr.res.in, jroy@ncra.tifr.res.in
5. Project Name : Investigating DM variations for the spider MSPs and its possible implications towards the timing studies
6. Project Code : 41_069
7. Operator(s) : Pramod, Shilpa
8. Command File : /data1/gtac/cmd/41_069/41_069_09Jan2022_0800_cmd.py
9. LTA File : /gwbifrdata1/09jan/41_069_band3_09jan2022_gwb.lta, /gwbifrdata2/09jan/41_069_band4_09jan2022_gwb.lta
10. LogFlag File :  

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , 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/TGC
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) : 591 591 540 540 51 51
30. Integration Time : 4.0265 Sec
31. No of Antennas Working(Fringing) at the beginning :28

32. Name of Non-Working Antennas (with reason for each) :
C03 : Mechanical Work.
C02 : Applied AZ brake

33. Note for Backup :

34. Start and End Time of Obs.(IST): 09 Jan 2022 08:00:00 - 09 Jan 2022 15:00:00

35. ONLINE Machine : TGC

36. No of Antennas Working(Fringing) at the end :28

37. RFI Status :

38. Comments (During Observations) :

------------GWB Setting---------------------------------------------------
GPU_MODE  	: Realtime
GPU_LTA  	: 8
GPU_ACQ_BW  	: 200.0000
GPU_FINAL_BW  	: 200
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 4096
GPU_CHAN_NUM  	: 0:4095:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF1  	: 500  500
GPU_DDCLO1  	: 540.000000  540.000000
GPU_SB1  	: 1 1
GCODE1  	: 41_069A
GPU_RF2  	: 550 550
GPU_DDCLO2  	: 0.000000  0.000000
GPU_SB2  	: 1 1
GCODE2  	: 41_069B
GPU_CNTRL  	: ONLINE/TGC
GPU_FSTOP  	: ON
GPU_BEAM_1  	: PA
GPU_BEAM_2  	: OFF
GPU_BEAM_3  	: PA
GPU_BEAM_4  	: OFF
GPU_BM_INT  	: 4
GPU_GAINEQ  	: ON
GPU_TPA  	: From online/TGC tpa
GPU_BITS  	: 8 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
GPU_PFB  	: OFF
GPU_PFB_TAPS  	: 4
GPU_BEAM_BIT  	: 16
GPU_VLT_BIT  	: 8
GPU_WALSH  	: OFF
GPU_ENV  	: RELEASED
--------------------------------------------------------------------------
# GWB GAC configuration is as follows : 
# BEAM-1:130 :: C00 C01 C04 C05 C06 C08 E02 E03 S01 S02 W01 W02 Total=12
# BEAM-1:175 :: C00 C01 C04 C05 C06 C08 E02 E03 S01 S02 W01 W02 Total=12
# BEAM-2:130 :: Total=0
# BEAM-2:175 :: Total=0
# BEAM-3:130 :: C09 C10 C11 C12 C13 C14 E04 S03 S04 W03 W04 Total=11
# BEAM-3:175 :: C09 C10 C11 C12 C13 C14 E04 S03 S04 W03 W04 Total=11
# BEAM-4:130 :: Total=0
# BEAM-4:175 :: Total=0

07:55 : Started set up.
08:21 : Started command file.
        /data1/gtac/cmd/41_069/41_069_09Jan2022_0800_cmd.py
09:45 : C09 taken for painting.Hence change reference antenna to C13.
13:09 : Scan no. 15 is bad.
13:57 to 14:18 : MUOS4 satellite observed (satellite RFI).
14:43 : C05 removed from GAC,due to not phased properly.
14:47 : Started scan on J2051-0827 for ~ 9.30575 min.
15:00 : Observation session over
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