HEASARC Status and Plans

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					      HEASARC Scientific Software

                      William Pence




April 12 - 13, 2006      William Pence   1
HEASARC Users Group
                         HEASOFT
  HEASOFT is the HEASARC's unified package of FTOOLS
        and Xanadu scientific analysis software.

• FTOOLS contains 456 individual tasks in 20 packages (estimated
  greater than 4 million lines of code)
   – Older packages written mainly in Fortran
   – Newer packages (Swift and Suzaku) are in C/C++ using more
     modern support libraries and build structures.
• Xanadu consists of 3 multi-mission analysis tools
    – Xspec – spectral analysis
    – Ximage – imaging analysis
    – Xronos – timing analysis




April 12 - 13, 2006          William Pence                         2
HEASARC Users Group
    Multi-mission Software Packages
•   Attitude tasks (15 tasks)
•   Calibration Database (33)
•   Imaging tasks (28)
•   General utilities: futils and heatools (56 + 24)
•   High Energy tasks (35)
•   General time related tasks (11)
•   Xronos tasks (15)
•   Parameter file utilities (6)
                          Total tasks = 223

April 12 - 13, 2006          William Pence             3
HEASARC Users Group
   Mission Specific Software Packages
     – ASCA (40 tasks)           – OSO8 (3)
     – CGRO (21)                 – ROSAT (35)
     – Einstein (2)              – RXTE (66)
     – Exosat (7)                – Swift (51)
     – HEAO1 (3)                 – Vela5B (5)
                                 – Suzaku (not yet public)
             Total = 233 tasks



April 12 - 13, 2006        William Pence                     4
HEASARC Users Group
                       Xselect
• High-level interactive program to selectively clean and
  filter event files; a bridge between FTOOLS and Xanadu
    – Extracts images, light curves, and spectra
    – Products can be analyzed by the Xanadu tasks
• Provides a uniform interface for all current and many
  archival X-ray astronomy missions
• Runs many individual FTOOLS tasks for the user
    – also runs CIAO or SAS tools in some cases
• Mission-specific information is stored in an ASCII
  configuration file
    – easy to add support for new missions and update
       existing missions.

April 12 - 13, 2006      William Pence                      5
HEASARC Users Group
                Calibration Database
• The CALDB system consists of:
   – a hierachical set of disk directories containing all the calibration
      files in FITS format
   – a searchable index of the files
   – software for users or software applications to query the database
• Typical query: "Give me the name of the RMF calibration file that is
  appropriate for this particular observation, i.e., at this time and taken
  with this instrument configuration"
• The software task then opens and reads the file
   – either at the HEASARC via FTP, or
   – from a locally installed copy of the CALDB files
• This decouples the calibration information from the analysis software
   – Calibration files can be updated without any modification to
      software

April 12 - 13, 2006              William Pence                            6
HEASARC Users Group
Other Popular Individually Distributed Software
• Fv - FITS file viewer and editor (ds9 compatible)
• CFITSIO – C and Fortran programming interface for
  reading and writing FITS files

• Both have >500 downloads per month.
• Used by researchers in all areas of astronomy and other
  sciences, as well as by a large number of amateurs.




April 12 - 13, 2006      William Pence                      7
HEASARC Users Group
              Next Software Release
• HEASOFT v6.1 will be released in June 2006
   – Previous release was in April 2005
• Significant new general features include:
   – New general image calculator tasks
      • Create a new image from arithmetic function of multiple input
        images, e.g., newimage = (a.fits + b.fits) / c.fits
      • Can be used with region files to, e.g., create image masks
        around specified coordinates
      • Can also apply mathematical filters to any input image in any
        task on the fly, e.g., fcopy in.fits[pix sqrt(X)] out.fits
   – New 'join' task merges matching rows in 2 input FITS tables
   – New coordinate converter task: equatorial <> ecliptic <> galactic

April 12 - 13, 2006           William Pence                              8
HEASARC Users Group
          New HEASOFT Features (continued)
● New table selection and calculator functions:
   – angsep : calculate angular separation between coordinates
   – accum : accumulative summation function
• The CALDB is more selective about flagging duplicate files
   – Recognizes finer distinctions between
   – Needed for Suzaku mission
• New Fv version
   – calculates flux within specified regions
   – support for new Hera features
• Updates to underlying support libraries
   – cfitsio, ccfits pil, readline



    April 12 - 13, 2006      William Pence                       9
    HEASARC Users Group
      XRONOS & XIMAGE Enhancements
•   Xronos : Planned changes
     – To represent the GRB curves
         —Adding the capability to bin by counts & log in the lightcurve.
         — Using the Bayesian statistic to work binning blocks
     – Re-write the tasks using C to facilitate :
         —the binning addition
         —the reading of the several input supported & writing of the output
         —portability and maintenance
     – Building of the individual tasks incrementally
         —First lightcurve task to be used with Swift (beta release maybe included
           with next HEAsoft release or soon after)
•   Ximage : changes (last and current release)
     – Adding support for Swift and Suzaku (psf) and psf in general
     – Include upper limit calculation using different algorithms
     – Upgrade of the AST library (FITS world coordinate system library)
     – Update of box rotation definition (for ds9 compatibility)
     – Several internal improvements
      Currently Supported Platforms
  (email registrations since last release in April 2005)

  – Linux PC (778)           •Cygwin PC (?)
  – Linux 64bit (76)         •OSF (10)
  – Mac Darwin (?)           •Linux Mac (3)
  – Solaris/SunOS (74)       •Linux Dec Alpha (3)


Total Registrations = 944
(email registration not available on Mac and Cygwin)


April 12 - 13, 2006      William Pence                     11
HEASARC Users Group
  Supported Platforms in Next Release
• Expect to add support for 64bit Linux PCs
   – Port is nearly complete
   – Main remaining issue is testing of individual tasks written in
     C which may not be fully 64-bit compliant
• Will Try to add support for new Intel-chip Mac computers
   – Main issue is that the standard GNU “g77” compiler is not
     yet available (expect it will eventually)
   – Attempting to use alternate “g95” compiler, but there are
     complications with the C/Fortran interface, non-int loop vars.
• May drop public support for the least used platforms
   – They remain useful for internal testing and require little extra
     effort to support.
April 12 - 13, 2006          William Pence                        12
HEASARC Users Group
                      Xspec Update
• (see Keith Arnaud presentation)




April 12 - 13, 2006      William Pence   13
HEASARC Users Group
                 Introduction to Hera
                (Demonstration tomorrow morning)
• Hera is a new experimental data analysis service
• It enables full data analysis over the Internet, including
   – High speed access to all the HEASARC archival data
   – Latest versions of the HEASOFT, CIAO, and XMM-
      SAS software packages
   – Cluster of 6 fast Linux machines to run the software
   – Large user disk area for intermediate file storage
• Users only need to install the small Fv program
   – Acts as the client to the Hera servers at the HEASARC


April 12 - 13, 2006         William Pence                 14
HEASARC Users Group
                      Hera Objectives
• To make data analysis easier and faster
   – Users don't have to install and maintain the large
     software packages
   – Users don't have to download large data sets to
     their local machine
• To make the data more accessible to new users
   – The graphical user interface can guide novice
     users through the steps of the analysis
   – Hera can be customized for specific purposes
      • e.g., Provide lab exercises for high school and
        college students
April 12 - 13, 2006        William Pence                  15
HEASARC Users Group
                 Hera User Interfaces
Four distinctly different user interfaces to Hera are available:
• “Standard” Hera – the original GUI interface provides full
  interactive access to all features
   –   Separate windows for managing remote and local files
   –   Hierarchical listing of software packages and tools
   –   Browse can save selected data sets to a Hera account
   –   Files are saved; can continue Hera analysis later
• “Anonymous” Hera – a temporary Hera session that uses
  the same GUI as Standard Hera.
   – Mainly used to immediately analyze a single data set selected
     in Browse
   – Files are deleted at end of session
 April 12 - 13, 2006         William Pence                     16
 HEASARC Users Group
                      Main Hera GUI




April 12 - 13, 2006    William Pence   17
HEASARC Users Group
         Hera Interfaces (continued)
• “Runtask” Hera – the newest “batch” interface to Hera for
  executing single tasks from a command line.
   – Example: > fv -runtask fcopy infile.fits outfile.fits
   – Especially useful if only a few tasks from a package need to be
     run, e.g. The XMM SAS “rmfgen” and “arfgen” tasks
   – Plan to add ability to execute a sequence of commands
     (scripts)
   – Could be used to write portable analysis scripts for users
   – e.g. Distribute a CD containing data, Fv, and Hera analysis
     scripts
• “Educational” Hera – developed with Jim Lochner to provide
  a simple analysis environment for student exercises.
   – Has been used in community college and a high school class
     settings to teach basic (astro)physics concepts.
 April       2006                                             18
The 12 - 13,3 of these interfaces will be demonstrated tomorrow.
       firstUsers Group
 HEASARC
                               William Pence

				
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