tmp0.fits

display range: -100,1000 Correct the cross talk effect Set the background level of each quadrant to 0 Divided by flat.fits

#Flat-fielding and badpix rejection
imdel tmp0,tmp1,mask,mask2,irs1_ar_lrm.fits
imcopy irs1_ar_lr tmp0.fits
#Cross talk subtraction
rmcross tmp0.fits tmp0.fits
###Stripe pattern subtraction
#rmstripe1 tmp0.fits tmp0.fits
#rmstripe2 tmp0.fits tmp0.fits
###Quadrant level adjustment
quadlev tmp0.fits tmp0.fits
###
imarith tmp0.fits / ../flat tmp0.fits
displ tmp0 1 zs+