NeSDaC
wshift
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WSHIFT (May95) ftools.saxwfc WSHIFT (Feb96)
NAME
wshift -- reshift event detector positions
USAGE
wshift infile attfile pntfile outfile [options]
DESCRIPTION
Corrects the detector positions in order to re-align the
Reshift the detector position of each event in order to
cancel out the effects pruduced by relatively small drifts of
the camera pointing. A prescribed set of Nominal Pointings
is given in a separate file (pntfile) calculated by the
attitude analysis program 'wattana'.
PARAMETERS
infile [string]
The name of the event input FITS file. The file is assumed
to be time ordered and free of Pseudo-events and of events
originating from In-Flight calibration sources.
pntfile [string]
The name of the Good Time Interval FITS file to be used to
filter the input table.
attfile [string]
outfile [string]
The name of the output event FITS file. It is a copy of the
input file having changed its position values in the X and Y
columns. In case of the camera pointing shifts the Z column
will be incremented by twice the identification
number of the Nominal Pointing
(calfile1 = "-" ) [string]
The name of the input FITS file that contains the coordinates
of the area boxes used for clipping and storing all events being
located in any of these rectangulars. The data only pertains to
events of SAX WFC-1. The purpose is to store separately all the
events that come from the In-Flight Calibration sources for
further gain calculations. For a description of the relevant
table in this file, see TBD.
(calfile2="-" ) [string]
Same as for calfile1, only used for SAX WFC-2
(dateref="MJDREF") [string]
Name of reference start date keyword
(timeunit="T_SCALE") [string]
Name time unit of keyword
(interpol=no) [boolean]
Interpolate position between attitudes
(xrange = ??) [real]
max allowed range in x-axis in pixel units
(yrange = ??) [real]
max range in y-axis in pixel units
(arange = ??) [real]
max range in rotation angle in arcminutes
(blockio=yes) [boolean]
Option to read/write in block mode. If not selcted
The I/O time will increase
(poscor=no) [boolean]
Correct detector positions
(pntcor=yes) [boolean]
(tcolumn="TIME_WFC") [string]
The name of the column in INFILE that contains the time
(title=" ") [string]
comments
(verbsty=0) [integer]
The verbosity level will control the output volume.
EXAMPLES
1. Filter the second extension in a FITS file named events.fits
using a GTI file named gti.fits and place filtered results in the
FITS file out.fits. All other parameters take on their default
values.
ft> wgtiflt events.fits[2] gti.fits out.fits
2. Filter all extensions in a FITS file named events.fits using
a GTI file named gti.fits and place filtered results in the FITS
file out.fits. The COPYALL flag is set to yes, thus copying the
primary array and any other extensions in the input file to the
output file.
ft> wgtiflt events.fits gti.fits out.fits COPYALL=yes
REMARKS
- Presently the realignment of detector postions is not supported.
- Presently the interpolate option is not yet supported.
- The default allowed ranges are only provisionally
ALSO
wfotfits, wgtiflt,fltime, mgtime, maketime, wmakgti, wmrggti
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