Two column Paper , Graph go out side the column

I need to draw a graph for my table values. I use xl sheet input data. My article is two column. But Graph go out side the column.I need some expert help to take graph in blue color range.

This is my code.

    .The SSIM results see in below ~textit{autoref{tab: c5T1} nameref{tab: c5T1}}.

%Table
setlengthtabcolsep{3pt} % default: 6pt
 begin{table}[h]
    caption{SSIM Values Change with Contrast}
    label{tab: c5T1}
    begin{tabularx}{0.47textwidth}{|X|X|X|X|X|}
        hline centeringarraybackslash{textbf{Method}}  & 
         centeringarraybackslash{textbf{0}}  &
          centeringarraybackslash{textbf{25}} & 
          centeringarraybackslash{textbf{50}} & 
          centeringarraybackslash{textbf{100}} 
        hline    centeringarraybackslash{Hard}  &   
        centeringarraybackslash{0.43576} &  
        centeringarraybackslash{0.51213} &  
        centeringarraybackslash{0.63486} &  
        centeringarraybackslash{0.85057}  
        hline  centeringarraybackslash{Soft} &  
        centeringarraybackslash{0.0000} & 
         centeringarraybackslash{0.16220} & 
          centeringarraybackslash{0.68675} & 
           centeringarraybackslash{0.69883}  
        hline
    end{tabularx}
end{table}


%%%%%%%%%%%%%%%%%%Graphe 2 -change with contrastt

begin{tikzpicture}
    begin{axis}[
    width=textwidth,
    height=6cm,
    xlabel={Contrast},
    ylabel={SSIM},   
    ymajorgrids,
    xmajorgrids,
    ymin=0,
    xmin=0,
    title = {SSIM value change with Contrast},
    x tick label style={/pgf/number format/1000 sep=},
    legend pos=south east
    ]
        addplot table[x=Contrast,y=Hard] {data.csv};addlegendentry{Hard}
        addplot table[x=Contrast,y=Soft] {data.csv};addlegendentry{Soft}
    end{axis}
end{tikzpicture}

newpage

documentclass[twocolumn]{article}
usepackage{tabularx}
usepackage{tikz, pgfplots}
usepackage{showframe}
usepackage{lipsum}

usepackage{siunitx}
begin{document}

    .The SSIM results see in below 

begin{table}[h]
  caption{SSIM Values Change with Contrast}
  label{tab: c5T1}
  sisetup{table-format=1.5}
  setlengthtabcolsep{3pt}
  begin{tabularx}{columnwidth}{|>{centeringarraybackslash}X|S|S|S|S|}
    hline 
    textbf{Method} & {textbf{0}} & {textbf{25}} & {textbf{50}} & {textbf{100}} 
    hline   
    Hard            &  0.43576     & 0.51213       & 0.63486       & 0.85057        
    hline  
    Soft            &  0.0000      & 0.16220       & 0.68675       & 0.69883        
    hline
    end{tabularx}
end{table}


%%%%%%%%%%%%%%%%%%Graphe 2 -change with contrastt
noindent
begin{tikzpicture}
    begin{axis}[
    width=columnwidth,
    height=6cm,
    xlabel={Contrast},
    ylabel={SSIM},   
    ymajorgrids,
    xmajorgrids,
    ymin=0,
    xmin=0,
    title = {SSIM value change with Contrast},
    x tick label style={/pgf/number format/1000 sep=},
    legend pos=south east
    ]
        addplot table[x=Contrast,y=Hard] {data.csv};addlegendentry{Hard}
        addplot table[x=Contrast,y=Soft] {data.csv};addlegendentry{Soft}
    end{axis}
end{tikzpicture}

lipsum

end{document}