AXIS Simulation Resources
WebSpec: a web interface for the X-ray spectral fitting package XSPEC, now includes AXIS (on-axis and whole FOV)
AXIS Sensitivity
Simulation Walkthroughs
Walkthrough for creating simulated AXIS spectrum and image of NGC 4636
XSPEC
XSPEC version: 12.14.0h
XSPEC12> @ngc4636_specmodel.xcm
XSPEC12> fakeit none
For fake spectrum #1 response file is needed: axis_ccd_20221101.rmf
...and ancillary file: axis_onaxis_20230701.arf
Use counting statistics in creating fake data? (y):
Input optional fake file prefix:
Fake data file name (): ngc4636_globalspec_100ks.fak
Exposure time, correction norm, bkg exposure time (1.00000, 1.00000, 1.00000): 100000.0,,
SIXTE
Make simputfile:
$SIXTE/bin/simputfile Simput=ngc4636_0.5to2keV_simput.fits \
Src_Name=NGC4636 \
RA=190.72066390978 \
Dec=2.7236158153574 \
srcFlux=5.4559e-12 \
Elow=0.3 \
Eup=10 \
NBins=1000 \
logEgrid=yes \
Emin=0.5 \
Emax=2 \
XSPECFile=ngc4636_specmodel.xcm \
ImageFile=ngc4636_img0.5to2keV.fits.gz
Run sixte:
$SIXTE/bin/runsixt \
XMLFile=$SIXTE/share/sixte/instruments/axis/axis_baseline_ccd_full.xml \
RA=190.7078782 Dec=2.6877399 \
Prefix=sim_ \
Simput=ngc4636_0.5to2keV_simput.fits \
EvtFile=evt_ngc4636_0.5to2keV.fits \
Exposure=100000
Make image:
$SIXTE/bin/imgev \
EvtFile=sim_evt_ngc4636_0.5to2keV.fits \
Image=img_ngc4636_0.5to2keV.fits \
CoordinateSystem=0 Projection=TAN \
NAXIS1=2880 NAXIS2=2880 CUNIT1=deg CUNIT2=deg \
CRVAL1=190.7078782 CRVAL2=2.6877399 CRPIX1=1440.0 CRPIX2=1440.0 \
CDELT1=-1.527777E-4 CDELT2=1.527777E-4 \
history=true clobber=yes
