HELP · SEE_ALSO

## NAME

pha_sig2rms -- Plot a histogram of signal-to-noise ratio for all the
Gaussian centers found by the `phaz` task.

## USAGE

`pha_sig2rms`

## DESCRIPTION

`pha_sig2rms` uses the output of the `phaz` task to plot a histogram of
signal-to-noise of
the Gaussian centers found for the differential pulse height
distributions. The Gaussian centers are simply divided
by the sigma of the center. The histogram bins are the possible values,
each bin containing the number of diodes which share the same
ratio.

## PARAMETERS

- (table = "") [file name]
- 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 on which 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 number of diodes drawn as the task progresses?

## EXAMPLES

1. Run the `phaz` task and then produce a histogram of all the
signal-to-noise ratios of the calculated Gaussian centers on the
`phaz` results.

cl> phaz z06i0501t.doh[*] z06i0501t.x0h[*] cl> pha_sig2rms

2. Produce the signal-to-noise ratio 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_sig2rms 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_all, pha_center, pha_diode, pha_rms, pha_summary, pha_text