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Дата изменения: Wed Jul 2 12:49:45 2008
Дата индексирования: Fri Sep 5 19:33:18 2008
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Поисковые слова: mars global surveyor

XMM-Newton Science Analysis System


eootemap (ebkgmap-1.2) [xmmsas_20080701_1801-8.0.0]

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Parameters

This section documents the parameters recognized by this task (if any).

Parameter	Mand	Type	Default	Constraints
expcubeset	yes	dataset
Dataset which contains an exposure map cube. See the eexpchipmap task documentation for a description of the format of this file.
style	no	string	evlist	evlist|srclist
Whether to construct the OOTE image directly from the event list or indirectly from a source list. Both styles have advantages and disadvantages. Use of the event list is better in most circumstances. A source list should be used only if it is known that a significant contribution to the OOTEs on a CCD is made by a source which is outside the data window of that CCD.
eventset	yes	dataset
Name of the event list dataset used to construct the OOTE image. This parameter is read if style=`evlist'.
srclisttab	yes	table
Name of the source list dataset and table used to construct the OOTE image. This parameter is read if style=`srclist'.
outputstyle	no	string	sky	sky|raw
If `sky', the OOTE map is output in sky coordinates, to the file referred to by parameter ooteimageset. In this case a template set (templateset) is needed and the attstyle parameter is also read. If outputstyle=`raw' on the other hand the output is written to a cube (in the expcubeset format) to the file pointed to by ootecubeset.
templateset	yes	dataset
This parameter is read if outputstyle=`sky'. This file should contain an image in the primary extension, which is used to define the pixel dimensions and World Coordinates of the output image.
ooteimageset	no	dataset	noisemap.ds
An output image in sky coordinates is written to this file name if outputstyle=`sky'.
attstyle	no	string	binnedset	binnedset|template
This parameter is read if outputstyle=`sky'. To convert from chip to sky coordinates it is necessary to know the spacecraft attitude. However the attitude is never completely stable and may vary significantly during an exposure. In this case the nett sky image must be a mosaic of components from different values of the attitude. A time series of attitude values (such as that made either by attbin or evproject) can be supplied to parameter binnedattset if attstyle is set to `binnedset'. If it is judged that the attitude wander during the exposure did not exceed some small fraction of the image pixel dimensions, or if the binned attitude set is not available, then the user may choose to set attstyle to `template' instead. In this case a single fixed value of attitude is read from *_PNT keywords in the template image header.
binnedattset	yes	dataset
If attstyle=`binnedset' the user should supply to the present parameter the name of a dataset which contains a time series of the spacecraft attitude variation during the exposure.
ootecubeset	no	dataset	noisemapcube.ds
An output image cube in chip coordinates is written to this file name if outputstyle=`raw'.
selexprstyle	no	string	userranges	userranges|dss|userexpr
Use of task eootemap implies that the user wishes to model the background component of a real image. To do this properly it is necessary that the OOTE map and the image reflect the same selection of events. It is therefore necessary to provide details of the event selections used to construct the real image. Ideally the user should supply these in the form of the Data Subspace (DSS) of the actual image by selecting selexprstyle=`dss' and then supplying the file name of the image with the DSS to parameter dssset. However it has been found convenient to also allow the user to supply the event selection expression directly (via expression) or simply to choose to supply a set of energy ranges. The latter can be done by selecting selexprstyle=`userranges' and then supplying lists of values to evlo and evhi. Note that in this circumstance the assumption is made that no other significant non-spatial selections were made to create the original image.
evlo	yes	real list		$0<$evlo
I selexprstyle=`userranges', a set of lower energy bounds is read from this parameter. Note that evlo and evhi must have the same (non-zero) number of elements; the elements of both parameters must occur in increasing order; and no evlo value may be $\ge$ than the respective evhi value.
evhi	yes	real list		$0<$evhi
I selexprstyle=`userranges', a set of upper energy bounds is read from this parameter. Note that evlo and evhi must have the same (non-zero) number of elements; the elements of both parameters must occur in increasing order; and no evlo value may be $\ge$ than the respective evhi value.
dssset	yes	dataset
I selexprstyle=`dss', information about event selections is sought in a Data Subspace (DSS) of the primary extension of this dataset.
expression	yes	string
This parameter is read if selexprstyle=`userexpr'. It should contain the selection expression used to construct the original image.
Parameter	Mand	Type	Default	Constraints