org.lsst.ccs.subsystem.archon

Class FitsUtilities

java.lang.Object

org.lsst.ccs.subsystem.archon.FitsUtilities

public class FitsUtilities
extends Object

Some utilities for dealing with test stand fits files.

Author:

homer, tonyj

Constructor Summary

Constructors

Constructor and Description
FitsUtilities()

Method Summary

Modifier and Type	Method and Description
double	getFluxStats(File fitsfile) Compute the flux statistics by reading an existing FITS file
void	updatePhotoDiodeValues(File pddatfile, File fitsfile, String extnam, String c1name, String c2name, double tstart) Update an existing files by adding or replacing the extension HDU containing the binary table of photo diode values.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FitsUtilities

public FitsUtilities()

Method Detail

updatePhotoDiodeValues

public void updatePhotoDiodeValues(File pddatfile,
                                   File fitsfile,
                                   String extnam,
                                   String c1name,
                                   String c2name,
                                   double tstart)
                            throws IOException,
                                   nom.tam.fits.FitsException

Update an existing files by adding or replacing the extension HDU containing the binary table of photo diode values. Note this routine currently works by copying the entire file to a temporary file, then renaming the temporary file over the top of the original file.

Parameters:

pddatfile - The file containing the photo diode data

fitsfile - The fits file to update

extnam - The extension name to add/update

c1name - The name for the first column of data

c2name - The name for the second column of data

tstart - The start time of the readings?

Throws:

IOException

nom.tam.fits.FitsException

getFluxStats

public double getFluxStats(File fitsfile)
                    throws nom.tam.fits.FitsException,
                           IOException

Compute the flux statistics by reading an existing FITS file

Parameters:

fitsfile - The file to read

Returns:

The computed flux statistics.

Throws:

nom.tam.fits.FitsException - If the fits file can not be read

IOException - If an IO exception occurs