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#!/bin/sh
#
# This script generate a series of regions for the extraction of
# radial surface brightness profile (SBP).
#
# Regions geneartion algorithm:
# (1) innermost 10 regions, we require a mininal of 5 pixel as well
# as 50 counts within the 0.7-7.0 keV range.
# (2) following regions: R_out = R_in * 1.2, and require SNR > 1.5.
# SNR = ??? (TODO)
#
# Reference:
# [1] region generate algorithm ??? (TODO)
#
# Author: Zhenghao ZHU
# Created: ??? (TODO)
#
# Change logs:
# 2017-02-26, Weitian LI
# * Further simplify arguments handling
# * Remove test support (-t) for simplification
# * Rename 'stn' to 'SNR'
# * Add ds9 view
# v3.0, 2015/06/03, Weitian LI
# * Copy needed pfiles to current working directory, and
# set environment variable $PFILES to use these first.
# * Added missing punlearn
# * Removed the section of dmlist.par & dmextract.par deletion
# v2.1, 2015/02/13, Weitian LI
# * added '1' to denominators when calculate SNR to avoid division by zero
# * added script description
# v2.0, 2013/03/06, Weitian LI
# * added the parameter `-t' to print SNR results for testing
# minimal counts
CNT_MIN=50
# energy: 700-7000eV -- channel 49:479
ERANGE=700:7000
CH_LOW=49
CH_HI=479
# energy 9.5-12keV -- channel 651:822
CH_BKG_LOW=651
CH_BKG_HI=822
if [ $# -ne 4 ]; then
printf "usage:\n"
printf " `basename $0` <evt> <bkg_pi> <reg_in> <reg_out>\n"
exit 1
fi
EVT=$1
BKGSPC=$2
REG_IN=$3
REG_OUT=$4
X=`\grep -i 'point' ${REG_IN} | head -n 1 | tr -d 'a-zA-Z() ' | awk -F',' '{ print $1 }'`
Y=`\grep -i 'point' ${REG_IN} | head -n 1 | tr -d 'a-zA-Z() ' | awk -F',' '{ print $2 }'`
echo "EVT: ${EVT}"
echo "ERANGE: ${ERANGE}"
echo "Center: (${X},${Y})"
echo "BKGSPC: ${BKGSPC}"
echo ""
## prepare parameter files (pfiles) {{{
CIAO_TOOLS="dmstat dmlist dmextract"
# Copy necessary pfiles for localized usage
for tool in ${CIAO_TOOLS}; do
pfile=`paccess ${tool}`
[ -n "${pfile}" ] && punlearn ${tool} && cp -Lvf ${pfile} .
done
# Modify environment variable 'PFILES' to use local pfiles first
export PFILES="./:${PFILES}"
## pfiles }}}
[ -f "${REG_OUT}" ] && mv -fv ${REG_OUT} ${REG_OUT}_bak
RIN=0
ROUT=0
CNTS=0
for i in `seq 1 10`; do
printf "Generate region #$i @ cnts:${CNT_MIN} ...\n"
ROUT=`expr $RIN + 5`
TMP_REG="pie($X,$Y,$RIN,$ROUT,0,360)"
punlearn dmlist
CNTS=`dmlist "${EVT}[energy=${ERANGE}][sky=${TMP_REG}]" blocks | \grep 'EVENTS' | awk '{ print $8 }'`
while [ `echo "$CNTS < $CNT_MIN" | bc -l` -eq 1 ]; do
ROUT=`expr $ROUT + 1`
TMP_REG="pie($X,$Y,$RIN,$ROUT,0,360)"
punlearn dmlist
CNTS=`dmlist "${EVT}[energy=${ERANGE}][sky=${TMP_REG}]" blocks | \grep 'EVENTS' | awk '{ print $8 }'`
done
TMP_REG="pie($X,$Y,$RIN,$ROUT,0,360)"
echo "${TMP_REG}" >> ${REG_OUT}
RIN=$ROUT
done
# last region width
#REG_W=`tail -n 1 ${REG_OUT} | tr -d '()' | awk -F',' '{ print $4-$3 }'`
RIN=$ROUT
ROUT=`echo "scale=2; $ROUT * 1.2" | bc -l`
SNR=10
i=11
SNR_FILE="sbp_snr.dat"
[ -e ${SNR_FILE} ] && mv -fv ${SNR_FILE} ${SNR_FILE}_bak
while [ `echo "${SNR} > 1.5" | bc -l` -eq 1 ]; do
printf "Generate SBP region #$i \n"
i=`expr $i + 1`
TMP_REG="pie($X,$Y,$RIN,$ROUT,0,360)"
# next region
RIN=$ROUT
ROUT=`echo "scale=2; $ROUT * 1.2" | bc -l`
TMP_SPC=_tmpspc.pi
punlearn dmextract
dmextract infile="${EVT}[sky=${TMP_REG}][bin pi]" outfile=${TMP_SPC} wmap="[energy=300:12000][bin det=8]" clobber=yes
punlearn dmstat
INDEX_SRC=`dmstat "${TMP_SPC}[channel=${CH_BKG_LOW}:${CH_BKG_HI}][cols counts]" | \grep "sum:" | awk '{print $2}'`
INDEX_BKG=`dmstat "${BKGSPC}[channel=${CH_BKG_LOW}:${CH_BKG_HI}][cols counts]" | \grep "sum:" | awk '{print $2}'`
COUNT_SRC=`dmstat "${TMP_SPC}[channel=${CH_LOW}:${CH_HI}][cols counts]" | \grep "sum:" | awk '{print $2}'`
COUNT_BKG=`dmstat "${BKGSPC}[channel=${CH_LOW}:${CH_HI}][cols counts]" | \grep "sum:" | awk '{print $2}'`
#echo "CNT_SRC: ${COUNT_SRC}, IDX_SRC: ${INDEX_SRC}, CNT_BKG: ${COUNT_BKG}, IDX_BKG: ${INDEX_BKG}"
# Add '1' to the denominators to avoid division by zero.
SNR=`echo ${COUNT_SRC} ${INDEX_SRC} ${COUNT_BKG} ${INDEX_BKG} | awk '{ printf("%f", ($1 / ($2 + 1)) / ($3 / ($4 + 1))) }'`
punlearn dmlist
CNT=`dmlist "${EVT}[energy=${ERANGE}][sky=${TMP_REG}]" blocks | \grep 'EVENTS' | awk '{ print $8 }'`
echo "CNT: ${CNT}"
echo "CNT_MIN: ${CNT_MIN}"
if [ `echo "${CNT} < ${CNT_MIN}" | bc -l` -eq 1 ]; then
break
fi
echo "SNR: ${SNR}"
echo "RIN: ${RIN}, ROUT: ${ROUT}"
echo "SNR: ${SNR}" >> ${SNR_FILE}
echo "${TMP_REG}" >> ${REG_OUT}
done
printf "check SBP regions ...\n"
ds9 ${EVT} -regions format ciao -regions system physical \
-regions ${REG_OUT} -cmap he -bin factor 4
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