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HESSI DATA ANALYSIS MEETING





Purpose:
                - To review status and plans for HESSI data analysis software
                - To solicit comments, suggestions and contributions

Status:
                - Basic data analysis plan as outlined in original proposal, PDR, CDR, PDMP has not changed.
                - Software team is mid-way through implementing basic plan
                - Software is fully available online (SSW).
                - Release 2 was posted July 2.
                - Release 3 is due out November 1.
                - Emphasis to date has been on functionality.
                - Descriptions today will be based on state of software as we expect it be at launch.

Comments:
                -Interfaces are firming up so that contributions are welcome.
                -Finite resources >> prioritization is important
 
 

OPTIONS FOR USER ANALYSIS OF HESSI DATA

Option 1:
                User requirements:     -Unix workstation or Windows PC
                                                              (minimum 64MB memory, 500  MB free disk)
                                                        -IDL 5.2
                                                        -Local or NFS-mount (or FTP) access to data
                                                        -SSW library
                Capability:                    - Full analysis
 
 

Option 2:

                User requirements:     - TELNET access to GSFC HESSI workstation
                                                        -Guest account

                Capability:                    - Full analysis, subject to computing resource limitations
 

Option 3:

                User requirements:     - WWW access to server at GSFC or ETH
                Capability by launch:  - Browsing and FTP download of catalog light curves,
                                                           images, flare lists, etc.
                Capability goal:            - Limited analysis using a forms interface
 

Discussion today will concentrate on Option 1.
 
 





KEY CHARACTERISTICS OF HESSI DATA ANALYSIS



 
 
 
 
 
 
bullet Basic data is time/energy-tagged photons
bullet Indirect imaging
bullet Flexibility available to user
bullet Level-0 data as the starting point
bullet Reliance on ancillary data

 
 

TOPICS MISSING FROM TODAY’S AGENDA



 
 
 
 

 
 
 
 
 
 
 
bullet Software to analyze pre-flight calibration data
bullet In-flight self-calibration software
bullet Nonsolar data analysis
bullet Polarization data analysis
bullet Analysis of white-light imaging and oscillation data
bullet Higher-level analysis tools (e.g. conversion of photon to electron spectra, modelling, and propagation codes, etc.)
bullet Post-launch issues such as software upgrades / calibration updates /
bullet user support
 
 

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Responsible NASA Official:  Gordon D. Holman

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Heliophysics Science Division
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Greenbelt, MD, 20771, USA
Gordon.D.Holman@nasa.gov

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This site last updated November 10, 2008.