LEDAS  
Leicester Database and Archive Service
 
Mission
    Description
Products
    Databases
Raw Data
    Archive
Analysis Software
    Archive
Ginga Information
Ginga Gallery
Related Sites
Databases
GINGALAC
GINGABGD
GINGAFRF
GINGALOG
GINGAMODE
GINGARAW
View Ginga DBs
Line
Footer
e-mail

Ginga Specific Software: Program MEANCONST



Purpose

Program meanconst performs straight or weighted mean of all spectral (PHAD) files (up to a maximum of 50) satisfying an input file specification. The weighted means can either be weighted using the variance associated with each datum or by the exposure associated with each file. In the latter case the variance in the output file is set to zero. Meanconst differs from meanpha as it allows the possibility of excluding data taken at low Galactic latitudes.


Input Files

A variable number (up to a maximum of 50) of PHAD files.


Output File

A Ginga PHAD file containing the mean spectrum.


Input Parameters

Meanpha requires four input parameters. The QX parameter system is used to read these parameters.

FILESPEC Input files specification (including wild cards).
DATOUT The name of the output file containing mean spectrum.
BGAL_MIN The minimum Galactic latitude from which data are used to calculate the mean spectrum.
AV_OPTION Option: Straight (S), Weighted (W) or Exposure weighted (E).


[Back to Contents]
 
HOME
SEARCH
SERVICES INFO SOFTWARE ViZieR BLASTA DSS
ARCHIVES ASCA CHANDRA GINGA ROSAT ARNIE