MultiDrizzle parameters with descriptions and default values
input = "*flt.fits" Input files (name, wild-card and suffix, or @list)
(output = "") Rootname for output drizzled products
(mdriztab = no) Use Multidrizzle parameter file specified in header?
(refimage = "")
(runfile = "") File for logging the script commands
(workinplace = no) Work on input files in place? (NOT RECOMMENDED)
(updatewcs = yes) Update the WCS keywords?
(coeffs = "header") Use header-based distortion coefficients?
(context = yes) Create context image during final drizzle?
(clean = no) Remove temporary files?
(group = "")
(ra = ) right ascension output frame center in decimal degrees
(dec = ) declination output frame center in decimal degrees
(build = yes) Create multi-extension output file?
(shiftfile = "") Shiftfile name
(staticfile = "") Name of (optional) input static bad-pixel mask
STEP 1: STATIC MASK
(static = yes) Create static bad-pixel mask from the data?
(static_sig = 4.0) Sigma*rms below mode to clip for static mask
STEP 2: SKY SUBTRACTION
(skysub = yes) Perform sky subtraction?
(skywidth = 0.1) Bin width for sampling sky statistics (in sigma)
(skystat = "median") Sky correction statistics parameter
(skylower = INDEF) Lower limit of usable data for sky (always in electrons)
(skyupper = INDEF) Upper limit of usable data for sky (always in electrons)
(skyclip = 5) Number of clipping iterations
(skylsigma = 4.0) Lower side clipping factor (in sigma)
(skyusigma = 4.0) Upper side clipping factor (in sigma)
(skyuser = "") KEYWORD indicating a sky subtraction value if done by user.
STEP 3: DRIZZLE SEPARATE IMAGES
(driz_separat = yes) Drizzle onto separate output images?
(driz_sep_out = ) Size of separate output frame's X-axis (pixels)
(driz_sep_out = ) Size of separate output frame's Y-axis (pixels)
(driz_sep_ker = "turbo") Shape of kernel function
(driz_sep_wt_ = "exptime") Weighting factor for input data image
(driz_sep_sca = INDEF) Absolute size of output pixels in arcsec/pixel
(driz_sep_pix = 1.0) Linear size of drop in input pixels
(driz_sep_rot = INDEF) Position Angle of drizzled image's Y-axis w.r.t. North (degrees)
(driz_sep_fil = "INDEF") Value to be assigned to undefined output points
(driz_sep_bit = 0) Integer mask bit values considered good
STEP 4: CREATE MEDIAN IMAGE
(median = yes) Create a median image?
(median_newma = yes) Create new masks when doing the median?
(combine_type = "minmed") Type of combine operation
(combine_nsig = "4 3") minmed: Significance for accepting minimum instead of median
(combine_nlow = 0) median|minimum: Number of low pixels to reject
(combine_nhig = 1) median|minimum: Number of high pixels to reject
(combine_lthr = "INDEF") median|minimum: Lower threshold for clipping input pixel values
(combine_hthr = "INDEF") median|minimum: Upper threshold for clipping input pixel values
(combine_grow = 1) minmed: Radius (pixels) for neighbor rejection
STEP 5: BLOT BACK THE MEDIAN IMAGE
(blot = yes) Blot the median back to the input frame?
(blot_interp = "poly5") Interpolant (nearest,linear,poly3,poly5,sinc)
(blot_sinscl = 1.0) Scale for sinc interpolation kernel
STEP 6: REMOVE COSMIC RAYS WITH DERIV, DRIZ_CR
(driz_cr = yes) Perform CR rejection with deriv and driz_cr?
(driz_cr_corr = no) Create CR cleaned _cor file and a _crmask file?
(driz_cr_snr = "3.5 3.0") Driz_cr.SNR parameter
(driz_cr_grow = 1) Driz_cr_grow parameter
(driz_cr_cteg = 0) Driz_cr_ctegrow parameter
(driz_cr_scal = "1.2 0.7") Driz_cr.scale parameter
STEP 7: DRIZZLE FINAL COMBINED IMAGE
(driz_combine = yes) Perform final drizzle image combination?
(final_wht_ty = "EXP") Type of weighting for final drizzle
(final_outnx = ) Size of FINAL output frame X-axis (pixels)
(final_outny = ) Size of FINAL output frame Y-axis (pixels)
(final_kernel = "square") Shape of kernel function
(final_wt_scl = "exptime") Weighting factor for input data image
(final_scale = INDEF) Absolute size of output pixels in arcsec/pixel
(final_pixfra = 1.0) Linear size of drop in input pixels
(final_rot = 0.0) Position Angle of drizzled image's Y-axis w.r.t. North (degrees)
(final_fillva = "INDEF") Value to be assigned to undefined output points
(final_bits = 0) Integer mask bit values considered good
(final_units = "cps") Units for final drizzle image (counts or cps)
OVERRIDE DEFAULT INSTRUMENT PARAMETERS
(gain = ) Detector gain in electrons per count
(gnkeyword = ) Detector gain keyword in header
(rdnoise = ) Detector read noise in electrons
(rnkeyword = ) Detector read noise keyword in header
(exptime = ) Exposure time in seconds
(expkeyword = ) Exposure time keyword in header
(crbit = ) Bit value for CR ident. in DQ array
(mode = "al")
