2017-09-28 01:35:09 +00:00
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subroutine calibrate(data_dir,iz,a,b,rms,sigmaa,sigmab,irc)
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2017-09-27 12:50:21 +00:00
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2017-09-28 01:35:09 +00:00
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! Average groups of frequency-calibration measurements, then fit a
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! straight line for slope and intercept.
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parameter (NZ=1000)
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implicit real*8 (a-h,o-z)
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2017-09-27 12:50:21 +00:00
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character*(*) data_dir
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2017-09-28 01:35:09 +00:00
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character*256 infile,outfile
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character*8 cutc,cutc1
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character*1 c1
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real*8 fd(NZ),deltaf(NZ),r(NZ),rmsd(NZ)
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integer nn(NZ)
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2021-08-22 13:24:03 +01:00
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infile=trim(data_dir)//'/'//'fmt.all'
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outfile=trim(data_dir)//'/'//'fcal2.out'
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2017-09-28 01:35:09 +00:00
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open(10,file=trim(infile),status='old',err=996)
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open(12,file=trim(outfile),status='unknown',err=997)
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nkhz0=0
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sum=0.d0
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sumsq=0.d0
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n=0
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j=0
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do i=1,99999
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2017-10-01 21:44:15 +00:00
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read(10,*,end=10,err=995) cutc,nkHz,ncal,noffset,faudio,df,dblevel,snr
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2017-09-28 01:35:09 +00:00
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if((nkHz.ne.nkHz0) .and. i.ne.1) then
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ave=sum/n
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rms=0.d0
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if(n.gt.1) then
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rms=sqrt(abs(sumsq - sum*sum/n)/(n-1.d0))
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endif
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fMHz=0.001d0*nkHz0
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j=j+1
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fd(j)=fMHz
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deltaf(j)=ave
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r(j)=0.d0
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rmsd(j)=rms
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nn(j)=n
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sum=0.d0
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sumsq=0.d0
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n=0
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endif
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dial_error=faudio-noffset
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sum=sum + dial_error
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sumsq=sumsq + dial_error**2
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n=n+1
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if(n.eq.1) then
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cutc1=cutc
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ncal0=ncal
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endif
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nkHz0=nkHz
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enddo
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10 ave=sum/n
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rms=0.d0
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if(n.gt.0) then
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rms=sqrt((sumsq - sum*sum/n)/(n-1.d0))
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endif
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fMHz=0.001d0*nkHz
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j=j+1
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fd(j)=fMHz
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deltaf(j)=ave
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r(j)=0.d0
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rmsd(j)=rms
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nn(j)=n
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iz=j
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if(iz.lt.2) go to 998
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call fitcal(fd,deltaf,r,iz,a,b,sigmaa,sigmab,rms)
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write(12,1002)
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1002 format(' Freq DF Meas Freq N rms Resid'/ &
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' (MHz) (Hz) (MHz) (Hz) (Hz)'/ &
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'----------------------------------------------------')
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irc=0
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do i=1,iz
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fm=fd(i) + 1.d-6*deltaf(i)
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c1=' '
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if(rmsd(i).gt.1.0d0) c1='*'
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write(12,1012) fd(i),deltaf(i),fm,nn(i),rmsd(i),r(i),c1
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1012 format(f8.3,f9.3,f14.9,i4,f7.2,f9.3,1x,a1)
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enddo
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go to 999
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2017-10-01 21:44:15 +00:00
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995 irc=-4; iz=i; go to 999
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2017-09-28 01:35:09 +00:00
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996 irc=-1; go to 999
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997 irc=-2; go to 999
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998 irc=-3
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999 continue
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close(10)
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close(12)
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2017-09-27 12:50:21 +00:00
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return
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end subroutine calibrate
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