Документ взят из кэша поисковой машины. Адрес оригинального документа : http://hea-www.harvard.edu/QEDT/Science_guide/caldb_news.txt Дата изменения: Wed Sep 27 01:15:59 1995 Дата индексирования: Tue Oct 2 02:41:50 2012 Кодировка: Поисковые слова: rosat

************************************************************************
* Tue Sep 26 18:15:26 EDT 1995
* New ASCA XRT Effective Area dataset available (from Nagoya ray-tracing)
************************************************************************

From: "Ian M George, Code 668, NASA/GSFC, USA (Usque ad mortem bibendum)"
To: aldcroft@garth.harvard.edu
Subject: New ASCA XRT Effective Area dataset available (from Nagoya ray-tracing)
X-Listprocessor-Version: 6.0c -- ListProcessor by Anastasios Kotsikonas
Content-Type: text
Content-Length: 522
Status: U

A new ASCA XRT calibration dataset is now available in the HEASARC Calibration
Database (eg via anonymous ftp from legacy.gsfc.nasa.gov). The dataset is
located in the file:

/caldb/data/asca/xrt/bcf/xrt_ea_v1_1.fits

and contains the XRT Effective Area from version 1.2 of the Nagoya ray-tracings.The dataset superceeds all earlier XRT Effective Area datasets, and further
instructions on its use will by provided to PIs by the ASCA GOF at NASA/GSFC
in the near future.

Ian M George
HEASARC Calibration Database


************************************************************************
* Tue Sep 26 18:14:11 EDT 1995
* New ASCA XRT RPSF dataset available (from Nagoya ray-tracing)
************************************************************************

From: "Ian M George, Code 668, NASA/GSFC, USA (Usque ad mortem bibendum)"
To: aldcroft@garth.harvard.edu
Subject: New ASCA XRT RPSF dataset available (from Nagoya ray-tracing)
X-Listprocessor-Version: 6.0c -- ListProcessor by Anastasios Kotsikonas
Content-Type: text
Content-Length: 536
Status: U

A new ASCA XRT calibration dataset is now available in the HEASARC Calibration
Database (eg via anonymous ftp from legacy.gsfc.nasa.gov). The dataset is
located in the file:

/caldb/data/asca/xrt/bcf/xrt_psf_v1_0.fits

and contains the XRT Radial Point-Spread-Function dataset from the ray-tracings
carried out at Nagoya. The dataset superceeds all earlier XRT RPSF datasets,
and further instructions on its use will by provided to PIs by the ASCA GOF
at NASA/GSFC in the near future.

Ian M George
HEASARC Calibration Database



************************************************************************
* Tue Aug 22 13:45:05 EDT 1995
* New ASCA SIS dataset available (for PHA->PI conversion)
************************************************************************

Date: Fri, 28 Jul 1995 08:15:44 -0400
Message-Id: <950728080916.20405094@lheavx.gsfc.nasa.gov>
Errors-To: oneel@arupa.gsfc.nasa.gov
Reply-To: GEORGE@lheavx.gsfc.nasa.gov
Originator: ascacaldb@athena.gsfc.nasa.gov
Sender: ascacaldb@athena.gsfc.nasa.gov
Precedence: bulk
From: "Ian M George, Code 668, NASA/GSFC, USA (Usque ad mortem bibendum)"
To: xanadu@head-cfa.harvard.edu
Subject: New ASCA SIS dataset available (for PHA->PI conversion)
X-Listprocessor-Version: 6.0c -- ListProcessor by Anastasios Kotsikonas
Status: O

A new ASCA SIS calibration datasets is available in the HEASARC
Calibration Database. The dataset is located in the file:

/caldb/data/asca/sis/bcf/sisph2pi_140795.fits

and contains coefficients related to the conversion of PHA channels to
PI channels for the SIS instruments. Further instructions regarding the
use of this dataset will be provided to PIs by the ASCA GOF at NASA/GSFC
in the near future.

Ian M George
HEASARC Calibration Database


************************************************************************
* Thu May 11 17:46:35 EDT 1995
* New (locally generated) GIS bgd files added
************************************************************************
The two background files

blanksky_g2_6cor_v2.evt
blanksky_g3_6cor_v2.evt

have been added to the GIS directory /data/caldb/data/asca/gis/bcf/bgd/94may/.

They contain all the events with COR > 6, which is the default cut-off used
by ascascreen. These files were generated by Jonathan Schachter, May
1995, and are not part of the official HEASARC CALDB distribution.

- TLA, 1995-May-11.


*****************************************************************
Date: Thu, 20 Apr 1995 20:27:49 -0400
Message-Id: <950420201726.20408c50@lheavx.gsfc.nasa.gov>
Errors-To: oneel@arupa.gsfc.nasa.gov
Reply-To: GEORGE@lheavx.gsfc.nasa.gov
Originator: rosatcaldb@ascasrv.gsfc.nasa.gov
Sender: rosatcaldb@ascasrv.gsfc.nasa.gov
Precedence: bulk
From: "Ian M George, Code 668, NASA/GSFC, USA (Usque ad mortem bibendum)"
To: Multiple recipients of list
Subject: ROSAT HRI Detector Maps available in the OGIP CALDB
X-Listprocessor-Version: 6.0c -- ListProcessor by Anastasios Kotsikonas

ROSAT HRI Detector Maps available in the OGIP CALDB
***************************************************

Two new files are available in the OGIP CALDB in
caldb/data/rosat/hri/cpf/detmaps/

These are briefly described in the README file within the directory
(appended below). Further details on when & how these files should
be used will be distributed to users by (NASA/GSFC) ROSAT GOF.

Ian M George
NASA/GSFC, HEASARC

-----------------------------------------------------------------------
ROSAT HRI Detector Maps
-----------------------

This directory contains two files: be.fits & de_corr.fits

be.fits: The Bright Earth Detector Map for the ROSAT HRI
--------------------------------------------------------
This dataset was created using bright-Earth data from the SASS files
by Steve Snowden (ROSAT GOF at NASA/GSFC) on 1995 Apr 12. Data were
selected when the Count rate was greater than 8 counts/s and the zenith
angle was greater than 115 degrees. This detector map is for the
vignetted component of HRI data, i.e. it should be used to cast effective
exposure.

de_corr.fits: The Dark Earth Detector Map for the ROSAT HRI
-----------------------------------------------------------
This dataset was created using dark-Earth data from the SASS files
by Steve Snowden (ROSAT GOF at NASA/GSFC) on 1995 Apr 12. Data were selected
when the Count rate was greater than 8 counts/s and the zenith angle was
greater than 115 degrees. This detector map is for the unvignetted component
of HRI data, i.e., it should be used to cast the particle background. The raw
map was corrected for residual vignetted X-rays

-----------------------------------------------------------------------

*****************************************************************

Date: Tue, 7 Mar 1995 18:50:21 -0500
Message-Id: <950307183659.6040732b@lheavx.gsfc.nasa.gov>
Errors-To: oneel@arupa.gsfc.nasa.gov
Reply-To: DAY@lheavx.gsfc.nasa.gov
Originator: ascanews@ascasrv.gsfc.nasa.gov
Sender: ascanews@ascasrv.gsfc.nasa.gov
Precedence: bulk
From: "Charles Day, ASCA GOF, NASA GSFC"
To: Multiple recipients of list
Subject: New GIS RMFs available from the GIS team
X-Listprocessor-Version: 6.0c -- ListProcessor by Anastasios Kotsikonas


Dear ASCA PIs and Archival Researchers:

[The following message can also be viewed on the ASCA GOF WWW homepage,
the URL of which is http://heasarc.gsfc.nasa.gov/docs/asca/ascagof.html.
Please look under "GIS News".]

Two new GIS response matrices (RMFs) are available via anonymous FTP in
the directory:

/caldb/data/asca/gis/cpf/95mar06

The files are called:

gis2v4_0.rmf
gis3v4_0.rmf

and supersede the response matrices released on 1994 April 20
(gis2v3_1.rmf and gis3v3_1.rmf).

In these previous versions, the low-energy tail of the pulse-height
distribution was underestimated, causing an artificial soft-excess to
appear in spectra with high absorption and low-energy photons. In the
new RMFs, the low-energy response has been modified by taking account of
ground calibration results and new theoretical calculations. The
artificial soft-excesses disappear with the new RMFs.

However, the response at energies above 4 keV has not been changed. This
means that the high energy response problems noted in the "Calibration
Uncertainties" (systematic residuals around 6 keV and above 8 keV)
remain unsolved. But note that these residuals are about 5 per cent, and
are dominated by statistical errors for sources of several counts per
second or less.

For the new RMFs, in common with previous versions:

o The GIS RMF converts energy (keV) to output channel (PI: Pulse
Invariant, i.e., gain-corrected PHA).

o RTI-based background rejection is assumed.

o The efficiency of the RMFs is normalized to unity: they should be
used in conjunction with an ARF file which contains the XRT/GIS
efficiency.

o The GIS2 and GIS3 RMFs are the same except for identifying keywords
in the headers.

Charles Day & Ken Ebisawa (ASCA GOF)
Makoto Tashiro (GIS Team, University of Tokyo)

Please send comments and questions to ascahelp@athena.gsfc.nasa.gov

*****************************************************************

From: "Ian M George, Code 668, NASA/GSFC, USA (Usque ad mortem bibendum)"
To: xanadu@head-cfa.harvard.edu
Subject: ROSAT HRI Calibration File renamed in the OGIP CALDB
X-Listprocessor-Version: 6.0c -- ListProcessor by Anastasios Kotsikonas

ROSAT HRI Calibration File renamed in the OGIP CALDB
****************************************************

The file hri_90dec01.rmf formerly in the directory given below
has been RENAMED to:
caldb/data/rosat/hri/cpf/hri_90dec01.rsp

These was done with the agreement of the ROSAT GOF at NASA/GSFC to make the
naming scheme more consistent with other detector response matrices in the
CALDB for which the extension:
*.rmf indicates a detector redistribution matrix (only)
*.rsp indicates a detector redistribution matrix MULTIPLED
by the telescope effective area.
The file was NOT changed in any other way.

Ian M George
NASA/GSFC, HEASARC

*****************************************************************

From: "Ian M George, Code 668, NASA/GSFC, USA (Usque ad mortem bibendum)"
To: xanadu@head-cfa.harvard.edu
Subject: New PSFs available for the ASCA XRT - CORRECTION
X-Listprocessor-Version: 6.0c -- ListProcessor by Anastasios Kotsikonas

Point Spread Function datasets for the ASCA XRT available
---------------------------------------------------------

There are new images giving the Point Spread Function of the ASCA XRT
available in the Calibration Database on legacy.gsfc.nasa.gov. These
datasets have been provided by Keith Arnaud of the ASCA GOF.

There are 11 new files within the directory:
/caldb/data/asca/xrt/bcf/psf/
one file for each of 11 different positions in the focal plane, with a
naming scheme psf_*_*.fits. Each file contains 10 psf images appropriate
for 10 different energy bands. Further information is provided in the
README file within the above directory (and appended below).

These datasets supercede all previous XRT PSF datasets available, namely the:
- ray-tracing simulations astrod_image_*_*.fits, which have been
MOVED at the request of the ASCA GOF to
/caldb/data/asca/xrt/bcf/psf/ray_trace
- the xrt_psf_isas1.fits file, which has been
MOVED at the request of the ASCA GOF to
/caldb/data/asca/xrt/bcf/psf/isas
- the xrt_eef_220693.fits file, which has been
MOVED at the request of the ASCA GOF to
/caldb/data/asca/xrt/bcf/psf/isas

Ian M George
HEASARC Caldb

*****************************************************************

From: "Ian M George, Code 668, NASA/GSFC, USA (Usque ad mortem bibendum)"
To: xanadu@head-cfa.harvard.edu
Subject: New PSFs available for the ASCA GIS
X-Listprocessor-Version: 6.0c -- ListProcessor by Anastasios Kotsikonas

Point Spread Function datasets for the ASCA GIS available
---------------------------------------------------------

There are new images giving the Point Spread Function of the ASCA GIS
available in the Calibration Database on legacy.gsfc.nasa.gov. These
datasets have been provided by Keith Arnaud of the ASCA GOF.

There are 11 new files within the directory:
/caldb/data/asca/gis/bcf/psf/
one file for each of 11 different positions in the focal plane, with a
naming scheme psf_*_*.fits. Each file contains 10 psf images appropriate
for 10 different energy bands. Further information is provided in the
README file within the above directory (and appended below).

Ian M George
HEASARC Caldb

*****************************************************************

From: zellar@timaeus.gsfc.nasa.gov (Ron Zellar)
To: xanadu@head-cfa.harvard.edu
Subject: new asca gis calibration files
X-Listprocessor-Version: 6.0c -- ListProcessor by Anastasios Kotsikonas

Two new ASCA GIS calibration datasets are available in the HEASARC
Calibration Database. The datasets are located in the files:

/caldb/data/asca/gis/bcf/gis2_ano_on_flf_180295.fits
/caldb/data/asca/gis/bcf/gis3_ano_on_flf_180295.fits

and contain the ASCALIN_FLF datasets valid for the GIS2 and GIS3
instruments respectively. The datasets provide updated gain maps and were
delivered to the Calibration Database by Eric Gotthelf and Ken Ebisawa of
the ASCA GOF through cooperation with the GIS team.

These datasets supercede the ASCALIN_FLF datasets distributed on April 20,
1994 which are valid for observations made after April 4, 1993.

Ron Zellar
HEASARC Calibration Database

*****************************************************************

***Wed Aug 17 16:57:38 EDT 1994
copied /caldb/data/asca/gis/bcf/bgd/night_earth

du -s gives: 511790 /data/caldb/data

*** 21st JUNE 94:

copied new SIS responses to /data/caldb/data/asca/sis/cpf/94jun20/

also new copy of /data/caldb/data/asca/README

SJD


*** 9th JUNE 94:

From: aneta@miles.harvard.edu (Aneta Siemiginowska)
To: head@miles.harvard.edu
Subject: ASCA Calibration files on local disk
Date: Thu, 09 Jun 94 19:33:37 EDT



We have made a local copy of (part of) the HEASARC OGIP Calibration database
to /data/caldb


The master copy is on the anonymous ftp at legacy.gsfc.nasa.gov, under the
directory /caldb. An introduction etc. is the xmosaic URL

http://heasarc.gsfc.nasa.gov/0/docs/heasarc/caldb/caldb_intro.html

Our local /data/caldb currently contains mainly the calibration files
needed for ASCA analysis, but also support (eg response matrices)
for other missions (all in FITS format).

The README files in /data/caldb/ directories contain useful information.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

STATUS OF THE LOCAL COPY:
Copied to /data/caldb:

-complete set of asca files
identical also to those at
file://himoko.astro.isas.ac.jp/caldb


- all documentation under /data/caldb/docs/, and subdirectories
memos, asca, rosat.

- all available rosat, exosat and einstein data
(at the moment the directories are nearly empty and contain only
response matrices, and instrument maps for the ROSAT PSPC)

NOT copied from HEASARC:
- everything else eg bbxrt, vela5b, sas2


!!!!!!!!!!!!

Enjoy!
Aneta Siemiginowska and Stuart Daines