HELP · SEE_ALSO

## NAME

pha_center -- Plot a histogram of all Gaussian centers found by
the `phaz` task.

## USAGE

`pha_center`

## DESCRIPTION

`pha_center` uses the output of the `phaz` task to plot a histogram of
the Gaussian centers found for the differential pulse height
distributions. The histogram bins are the possible threshold values,
each bin containing the number of diodes which share the same
calculated threshold.

## PARAMETERS

- (table = "") [file name]
- The table containing the threshold statistics produced by the
`phaz`task. If this parameter is left blank, the table name will be taken from the`table`parameter of the`phaz`task.

- (device = "stdgraph") [string]
- Output device used to print the graphs.

- (left = 0.) [real]
- The left boundary on the graphics device, specified from 0. to 1., where the graphs will appear.

- (right = 1.) [real]
- The right boundary on the graphics device, specified from 0. to 1., where the graphs will appear.

- (bottom = 0.) [real]
- The bottom boundary on the graphics device, specified from 0. to 1., where the graphs will appear.

- (top = 1.) [real]
- The top boundary on the graphics device, specified from 0. to 1., where the graphs will appear.

- (verbose = yes) [real]
- Display the number of diodes drawn as the task progresses?

## EXAMPLES

1. Run the `phaz` task and then produce a histogram of all the
calculated Gaussian centers on the `phaz` results.

cl> phaz z06i0501t.doh[*] z06i0501t.x0h[*] cl> pha_center

2. Produce the Gaussian center histogram on a different set of data,
contained in the files `intphd_old` and `phaz_old`.
Send the plots to the standard plot device.

cl> pha_center table=phaz_old device=stdplot

## BUGS

## REFERENCES

Author: Jonathan Eisenhamer

## HELP

For assistance using this or any other tasks, please contact help@stsci.edu or call the help desk at 410-338-1082.

## SEE ALSO

phaz, pha_diode, pha_rms, pha_sig2rms, pha_summary, pha_text