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Last modified: 25 September 2018

URL: http://cxc.harvard.edu/ciao/releasenotes/ciao_4.2_release.html

CIAO 4.2 Release Notes


CIAO 4.2 was released on 15 December 2009.

[Updated] CALDB was upgraded to v4.3.1 on 28 Sept 2010.

The Sherpa modeling and fitting package has a number of enhancements, such as a new confidence method, full support for wavelength analysis, and a "save_all" command to save the session in ASCII format. Several of Sherpa's computationally intensive functions have been parallelized, to make use of multi-core systems (i.e., laptops or desktops with 2 or 4 cores).

The ChIPS plotting application includes beta support for displaying images and colorbars, as well as the ability to create an editable ASCII save file.

Other notable changes in CIAO 4.2 are:



How CALDB 4.3.1 Affects Your Analysis

Some calibration files in CALDB 4.3.1, released on 28 Sept 2010, affect analyses in progress. This section of the release notes describes those changes and which tasks are affected. The changes are arranged by instrument and grating configuration.

ACIS Imaging and Grating Data


How CALDB 4.3.0 Affects Your Analysis

Some calibration files in CALDB 4.3.0, released on 10 June 2010, affect analyses in progress. This section of the release notes describes those changes and which tasks are affected. The changes are arranged by instrument and grating configuration.

ACIS Imaging and Grating Data

HRC-I Imaging Data

HRC-I Grating Data


How CALDB 4.2.2 Affects Your Analysis

There were two errors in CALDB 4.2.1 that have been fixed in the CALDB 4.2.2 release:

  • There was an error in the ACIS index file for one of the TGAIN Epoch 40 datasets. This produced a harmless warning in acis_process_events.

  • An unrelated error existed in the latest ACIS-I1 background file; it contained only one column and was not usable.

With the exception of the corrections to these two files, the release notes are identical to the CALDB 4.2.1 release notes.


How CALDB 4.2.1 Affects Your Analysis

Some calibration files in CALDB 4.2.1, released on 5 April 2010, affect analyses in progress. This section of the release notes describes those changes and which tasks are affected. The changes are arranged by instrument and grating configuration.

Installing CALDB 4.2.1

ACIS Imaging Data

ACIS Grating Data

HRC-S/LETG Grating Data


How CIAO 4.2 and CALDB 4.2.0 Affect Your Analysis

Some tool changes and calibration files released in CIAO 4.2 and CALDB 4.2.0 affect analyses in progress. This section of the release notes describes those changes and which tasks are affected.

Compatibility

ACIS Imaging and Grating Data

HRC-S Imaging and Grating Data

HRC-I Imaging Data


Tools

acis_build_badpix

acis_process_events

acis_run_hotpix

calquiz

calvalid

create_bkg_map

dmimgpm

dmjoin

dmpaste

dmcoords

eff2evt

hrc_dtfstats

hrc_process_events

lim_sense

reproject_image_grid

specextract

srcextent

tg_create_mask


Parameter Files

A summary of parameter files changes is provided in this section. Refer to the Tools section of these release notes for complete details.

acis_build_badpix

calquiz

eff2evt


Data Model

Bug Fixes

ASCII Kernel

Crates Library


ChIPS

Startup Options

Imaging Support

Saving the ChIPS Session

Setting Multiple Attributes and Toggling Error Bars

Aspect Ratio Information

Improvements to Printing

Additional Enhancements & Bug Fixes


Sherpa

Startup Options

Parallelization

Loading and Viewing Data

Filtering Data

PSF Instrument Models

Models and Parameters

Optimization Methods

Fitting

New Confidence Limit Function: conf

Saving the Sherpa Session

Additional Enhancements & Bug Fixes


GUIs (Graphical User Interfaces)

ds9 and dax

ObsVis

prism

peg

taskmonitor


Libraries

tcdlib


Environment

ciaover

Automatic Update of Configuration Files for Python Users

IPython

Setting the HEADAS Variable

Off-the-Shelf (OTS) Package Versions


Analysis Scripts

The CIAO contributed scripts package is available from the Scripts page and is considered a required part of the installation. They can be installed with the ciao-install script when CIAO 4.2 is installed.

Infrastructure Changes

SherpaCL

Flux Commands

fit_primini

lc_clean and analyze_ltcrv

tg_bkg v1.2


Documentation

Analysis Threads