VerilogA End of File

Hi, 

I am reading data from a file which contains the pixel values of column of image. I am performing the transient analysis using spectre to get the output (out here) at each time event. I have tried, just to check, different length of simulations but the response is same as shown in the attached figure. Also, simulation does not stop and continue. Please help.

// VerilogA for Verilog_A, data_readout, veriloga

`include "constants.vams"
`include "disciplines.vams"

module module_filereader (out);

output out;
electrical out;

parameter real period = 1/10k;
parameter integer maxcount = 480;

integer dataread, cnt;
real mydata1, mydata2;
real datacol [maxcount-1:0];

analog begin

@(initial_step("tran")) begin
cnt = 0;
dataread = $fopen("/../One_column_image1.csv","r"); //opening file readable access
end

@(timer(0, period )) begin
cnt = cnt+1;
end

while( cnt < maxcount ) begin
mydata1 = $fscanf(dataread,"%f", datacol[cnt]);
// mydata1 = $fscanf(dataread,"%f",cnt);

end
$debug("\nThe value of variable mydata1 is %f",mydata1);


@(final_step) $fclose(dataread);

V(out) <+ transition(mydata1, 1n, 1n, 1n);

end

endmodule

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