CIAO 1.1.3 Release Notes
- Bug fixed that was filling the background arrays with all zeros. - removed external references to HESF (Drake Flat) extraction -- support for this has been suppressed. - Modified to handle ACIS + LETG - Fixed bug in region extension output. The older version has negative wavelength in the region extension when order is negative. Also, in the older version, the y coordinate of the center of the BACKGROUND_DOWN region is wrong when order is positive.
New functionality: ================== 1. FAKEIT allows simulation of 1-D spectra (see attached additional document for detail description). 2. XSAPEC plasma emission model has been added to the model library. Two options are available: access to the new Atomic Data Base through APEC (default option 4), and to the traditional Raymond-Smith plasma (option 1) Bug Fixes: ========== 1. An access to XSPEC model library on Linux has been fixed. 2. Two bug fixes included in previous 1.1.2 patch: 2.1 glue.C : EFFECT: fixes bug that rendered useless the Sherpa command "record," which logs parameter values and chi-squares in a file called "search.dat." The chi-square output (val) was wrong and meaningless. 2.2 histogramAxis.C : EFFECT: fixes bug that prevented 1D histogram (PHA) datasets from being fit with some filter choices, and caused the following error message to be displayed:
Error: A DataSet Error has been detected. -- Internal miscount of number of rhs points.
The bug is seen only when a given filter range in the convolved PHA data space mapped to two or more non-contiguous filter ranges in the unconvolved RMF energy space. (Simplistic example: photons in the non-contiguous energy ranges 0.1-0.2 keV and 0.4-0.5 keV can be recorded as counts in the contiguous PHA bin range i-j, but photons between 0.2 and 0.4 keV cannot.)
- asphist - handle no GTI case