These Web-based tools are designed to assist
scientists in their proposal and general data analysis efforts. The
HEASARC provides these tools as a service to the scientific community.
[FTOOLS, a general
FITS file utility programs and
mission-specific data analysis tools can be found on the
- Timeline tool updated (05 Apr 2019)
The Timeline Tool has been enhanced to be more user-friendly.
If no date is entered, it will now respond with the most recent date for
which timeline data exists for the specified mission. Also, if only one date
is queried, quick links to go to the previous and next days in the mission
timeline are presented.
- Viewing tool updated (17 Sep 2018)
The Swift pole constraints have been updated in the Viewing
tool. The revised coefficients extrapolate the trend for the next year. The
Viewing tool now also can report a "preferred" visibility window for NICER
observations, which has a Sun angle constraint of 60-180 degrees. (The nominal
visibility window for NICER observations is unchanged.)
- Argus v4.2 released (10 Sep 2018)
Support for NICER has been added to Argus.
- X-Ray Background Tool v3.0 released (15 Aug 2018)
The X-Ray Background Tool has been enhanced with support for
counts statistics and the generation of counts-based spectra.
- xTime tool updated (14 Jun 2018)
Added support for MAXI and Hitomi and restored support for
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