GTAC Observation Log

1. Date : 24/12/2019
2. Observation Sr. No. : 11720
3. Observer : Jayaram Narayanan Chengalur, Sangeeta Malhotra, James Ely Rhoads, Nissim Kanekar, Huan Yang, Tianxing Jiang, Sushma Kurapati, Tapasi Ghosh
4. Observer's Email : chengalur@ncra.tifr.res.in, Sangeeta.Malhotra@nasa.gov, James.E.Rhoads@nasa.gov, nkanekar@ncra.tifr.res.in, hyang@carnegiescience.edu, txjiangastro@gmail.com, sushma@ncra.tifr.res.in, tghosh@naic.edu
5. Project Name : Imaging the HI 21cm line and radio continuum emission in Green Peas: Local analogs of high redshift  Lyman-alpha emitters
6. Project Code : 37_056
7. Operator(s) : Nilesh, Shilpa
8. Command File : /odisk/gtac/cmd/chengalu/gp1302.cmd
9. LTA File : /gsbifrdata1/24dec/37_056_23dec2019_gsb.lta, /gwbifrdata2/24dec/37_056_24dec2019_gwb.lta
10. LogFlag File : /odisk/online1/logflags/37_056.FLAGS.5, /odisk/online1/logflags/37_056.FLAGS.4

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1371.7835 MHz ,RF2 : 1371.7835 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1310 MHz, ILO2 : 1310MHz , IVLO1 : 61.7835 MHz, IVLO2 : 61.7835 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 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 : 16.666666 MHz
24. Final BW : 4 MHz; Step # 2
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 138.2165
28. LO5 -2  : 166.7835

29. Frequency Parameters (TPA) : 1371.7835 1371.7835 1310 1310 61.7835 61.7835
30. Integration Time : 8.053 Sec
31. No of Antennas Working(Fringing) at the beginning :29

32. Name of Non-Working Antennas (with reason for each) :
S04 : Feed Problem.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 24 Dec 2019 00:55:00 - 24 Dec 2019 13:01:00

35. ONLINE Machine : Shivneri

36. No of Antennas Working(Fringing) at the end :27

37. RFI Status :

38. Comments (During Observations) :
00:55 : Started settings.
------------GWB Setting---------------------------------------------------
GPU_MODE  	: Realtime
GPU_LTA  	: 2
GPU_ACQ_BW  	: 100.0000
GPU_FINAL_BW  	: 100.0000
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 4096
GPU_CHAN_NUM  	: 0:4095:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 1330  1330
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: -1 -1
GCODE4  	: 37_056
GPU_CNTRL  	: ONLINE
GPU_FSTOP  	: ON
GPU_BEAM_1  	: OFF
GPU_BEAM_2  	: OFF
GPU_BEAM_3  	: OFF
GPU_BEAM_4  	: OFF
GPU_BM_INT  	: 128
GPU_GAINEQ  	: OFF
GPU_TPA  	: From GWB GUI.
GPU_BITS  	: 8 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
--------------------------------------------------------------------------
GWB SETUP
--------------------------------------------------------------------------
RF           : 1390 MHz 
GAB LO       : 1330 MHz
Sideband     : 0 (USB)
ACQ BW       : 100 MHz
Final BW     : 100 MHz
Channels     : 4096
Stokes       : 2
LTA          : 8 (8-second integrations)
Channel 1    : 1330 MHz
Channel 4096 : 1430 MHz
--------------------------------------------------------------------------
GSB SETUP
--------------------------------------------------------------------------
Line/Center Frequency : 1382.2				
Radio Frequency Band  : 1390 [1330-1450]
First LO    Frequency : 1310
Maximum IF band width : 18
[ACQ] Band Width      : 16.6666
CH#[Start]........... : [0] 1380.1167 
CH#[Middle].......... : [256] 1382.2 
CH#[End]............. : [512] 1384.2833  
CH Width.(KHz)....... : 8.1379  
Final Band Width..... : 4.1666
Digital Sub Band(Step): 2  USE
Band Net sign    .....: 1
GSB CONFIG LO5   .... : 138.2165 166.7835
LTA FILE   LO5/LO4 .. : 129.8833 175.1167
BASE BAND  LO4   .... : 61.7835 61.7835
TPA : 1371.7835 1371.7835 1310 1310 61.7835 61.7835
--------------------------------------------------------------------------
01:03 : Started scan on 3C48 for ~ 10.2005 min.
01:18 : Started scan on 3C147 for ~ 10.8716 min.

## TAKEN 3C147 SINCE SOURCES NOT UP IN SKY.

01:32 : Started command file.
        /odisk/gtac/cmd/chengalu/gp1302.cmd

09:33 : S04 started working.

09:35 : C10 taken for painting.
09:40 : C11 taken for callsheet work.
10:16 : C14 taken for structural repairing.

12:45 : Stopped command file.

12:48 : Started scan on 3C286.
13:01 : Stopped scan and observing session over.