MultiMission Pulse Height Analysis

MPHA for Cassini

current stable version

To start the MPHA Analysis software for Cassini, click on either image (above or below):

MPHA includes some Help Pages and extensive tooltip assistance .

Press here to download a recent pdf copy of the MPHA Help Pages .
Press here to see the MPHA maintenance file, look at MPHA-README .

newest test version

You must have Java 1.5+ or higher to run the newer verions of MPHA.

A computer with a fully updated JVM will work fine.

An earlier version of MPHA that runs on Java 1.4+ can be found here .

Status Updates

2007-Jan-15
There are two versions of MPHA - a current, regular or stable, version and a test version.

These changes apply to the current version and the test version:

• MPHA now requires Java 1.5 (also called J2SE 5.0). A copy of an older version is available for those using Java 1.4, but this older version has fewer options and capabilities than either the current or test version.
• MPHA can generate phaflux for a number of standard species boxes not initially provided in the Science Rates.
• The user interface has recently been changed.
• MPHA can generate multi-panel intensity-time spectrograms of CHEMS data (counts only for now) for either CHEMS Science Rates or phaflux calculations of rates and current species boxes.
• The UMD PHAFlux Box choices in the Plot Choices Dialog are currently merely placeholders.
• The intensity-time line plots are not implemented yet.
• I was not satisfied with the time management scheme routines I initially devised for MPHA and am still in the process of simplifying these. Additionally, the intensity-time capabilities added to MPHA required significant changes to the internal structure of MPHA. I am still reworking the MPHA code to improve performance and simplify access to and presentation of the data.
• MPHA can reread and sum, or concatenate, cache (*.rfx, *.pfx) files and 'matrix image'(*.mhx) files written earlier by MPHA through its DataOutput Dialog. Because MPHA currently stores PHA information in memory and CHEMS PHA files can be very large, up to eight times larger than CHEMS Science Rate files (204 MB vs 25.4 MB for 05266, for example) this scheme quickly limits MPHA's present memory-based PHA-caching scheme when accumulating long time intervals. MPHA operations use of these intermediate files allows longer intervals to be accumulated. I intend to change this to a disk-based caching scheme as soon as other functionality is fully stabilized.

• The test version is essentially the same as the current version right now.

2005-Dec-09 - Initial Distribution.

The strategy is to provide two versions of MPHA for the Cassini team - a current (regular) version and a test version.
Both versions will be updated when the newer test version becomes stable.

Last Modified: Mon Jan 15 15:50:23 EDT 2007.