示例#1
0
int doNoisIR (WF3Info *wf3, MultiNicmosGroup *input) {

/* Arguments:
**	wf3	 i: WFC3 info structure
**	input	io: input image
*/

	/* Function definitions */
	int noiscalc (WF3Info *, SingleNicmosGroup *);
	int OmitStep (int);
	void PrSwitch (char *, int);

	/* Do the noise calculation for each group */
	if (wf3->noiscorr == PERFORM) {

	    for (wf3->group=wf3->ngroups; wf3->group >= 1; wf3->group--) {
		 if (noiscalc (wf3, &(input->group[wf3->group-1]))) {
		     PrSwitch ("noiscorr", SKIPPED);
		     return (status=0);
		 }
	    }
	}

	/* Print status to trailer */
	if (!OmitStep (wf3->noiscorr))
	    trlmessage ("Uncertainty array initialized.");
	PrSwitch ("noiscorr", COMPLETE);

	/* Successful return */
	return (status = 0);
}
示例#2
0
int doBlevIR (WF3Info *wf3, MultiNicmosGroup *input, SingleNicmosGroup *zoff) {

/* Arguments:
**	wf3	 i: WFC3 info structure
**	input	io: image to be bias corrected
*/

	/* Local variables */

	/* Function definitions */
	int blevcorr (WF3Info *, SingleNicmosGroup *);
	void PrSwitch (char *, int);
    
	/* Do the bias correction for each group */
        if (wf3->blevcorr == PERFORM) {

	    for (wf3->group=wf3->ngroups; wf3->group >= 1; wf3->group--) {
		 if (blevcorr (wf3, &(input->group[wf3->group-1])))
		     return (status);
            }
	    if (blevcorr (wf3, zoff))
		return (status);

	    PrSwitch ("blevcorr", COMPLETE);
	}

	/* Successful return */
	return (status = 0);
}
示例#3
0
int doNlinIR (WF3Info *wf3, MultiNicmosGroup *input,
	      SingleNicmosGroup *zsig) {

/* Arguments:
**	wf3	 i: WFC3 info structure
**	input	io: input image to be corrected
**	zsig	 i: MULTIACCUM zero-read signal image
*/

	/* Local variables */
	NlinData nlin;

	/* Function definitions */
	int getNlinData (WF3Info *, NlinData *);
	void freeNlinData (NlinData *);
	void satcheck (SingleNicmosGroup *, SingleNicmosGroup *);
	void PrSwitch (char *, int);

	/* Do the non-linearity correction for each group */
	if (wf3->nlincorr == PERFORM) {

	    /* Load the nlin reference file data */
	    if (getNlinData (wf3, &nlin))
		return (status);

	    /* Loop over MultiAccum groups */
	    for (wf3->group=wf3->ngroups; wf3->group >= 1; wf3->group--) {

		 if (nlincorr (wf3, &(input->group[wf3->group-1]), &nlin,
			       zsig))
		     return (status);

		 /* Flag pixels in the next group as saturated if they're
		 ** flagged as saturated in the current group */
		 if (wf3->group-1 > 0)
		     satcheck (&(input->group[wf3->group-1]),
			       &(input->group[wf3->group-2]));
	    }

	    freeNlinData (&nlin);

	    PrSwitch ("nlincorr", COMPLETE);
	}

	/* Successful return */
	return (status = 0);
}
示例#4
0
文件: acsrej_do.c 项目: pllim/hstcal
/*  acsrej_do -- Perform the cosmic ray rejection for ACS images

  Description:
  ------------
  This is mostly a file bookkeeping routine for the cosmic ray rejection task.
  It takes care of input/output files open/close, check for dimensions, read/
  write data from/to files, allocate memory spaces etc.

    Date          Author          Description
    ----          ------          -----------
    06-May-1996   J.-C. Hsu       Adapt from the SPP code crrej_do.x
    05-Aug-1998   W. Hack         Modified to handle ACS data
    11-Feb-1999   W. Hack         EXPTIME now in Pri. Hdr.
    18-Mar-1999   W.J. Hack       Revised to read EXPTIMEs from Primary headers
                                  for cr_scaling using tpin directly
    14-Sep-1999   W.J. Hack       Cleaned up SHADCORR usage. Added check for max
                                  number of files here.
*/
int acsrej_do (IRAFPointer tpin, char *outfile, char *mtype, clpar *par, int newpar[])
{
    extern int  status;

    IODescPtr   ipsci[MAX_FILES];   /* science image descriptor */
    IODescPtr   ipdq[MAX_FILES];    /* data quality image descriptor */
    float       skyval[MAX_FILES];  /* background DN values */
    float       efac[MAX_FILES];    /* exposure factors */
    multiamp    noise;              /* readout noise */
    multiamp    gain;               /* A-to-D gain factors */
    float       exptot;
    float       texpt;
    int         nimgs;
    SingleGroup sg;
    int         niter = 0;
    float       sigma[MAX_ITER];

    Hdr         phdr;               /* primary header */
    int         extver;             /* Current extension being processed*/
    int         numext;             /* Number of extensions in each image */
    int         nextend;            /* Number of output extensions */
    char        imgname[MAX_FILES][CHAR_FNAME_LENGTH];
    char        fimage[CHAR_FNAME_LENGTH];  /* Name of first image in list */
    char        root[CHAR_FNAME_LENGTH];    /* ROOTNAME for output CRJ file */
    char        uroot[CHAR_FNAME_LENGTH];   /* Upper case version of rootname */
    char        *shadrefname;

    int         ext[MAX_FILES];
    int         dim_x, dim_y;       /* image dimensions */
    int         i, j, n;            /* loop indices */
    float       *efacsum, *work;
    int         nrej;               /* total number of rejected pixels */
    float       skysum;             /* total sky level */
    int         logit;
    RefImage    shadref;
    int         shadswitch;
    double      expend, expstart;
    int         non_zero;           /* number of input images with EXPTIME>0.*/
    int         found;
    char        imgdefault[CHAR_FNAME_LENGTH];  /* name of first input image with EXPTIME > 0. */

    int     GetSwitch (Hdr *, char *, int *);
    int     UpdateSwitch (char *, int, Hdr *, int *);

    void    InitRefImg (RefImage *);
    int     ImgHistory (const RefImage *, Hdr *);
    int     ImgPedigree (RefImage *);

    int     acsrej_check (IRAFPointer, int, int, clpar *, int [],  char [][CHAR_FNAME_LENGTH],
                int [], IODescPtr [], IODescPtr [],
                multiamp *, multiamp *, int *,
                int *, int);
    int     cr_scaling (char *, IRAFPointer, float [], int *, double *, double *);
    int     rejpar_in(clpar *, int [], int, float,   int *, float []);
    void    acsrej_sky (char *, IODescPtr [], IODescPtr [], int, short, float []);
    void    cr_history (SingleGroup *, clpar *, int);
    int     acsrej_init (IODescPtr [], IODescPtr [], clpar *, int, int, int,
                multiamp, multiamp, float [], float [],
                SingleGroup *,   float *);
    int     acsrej_loop (IODescPtr [], IODescPtr [], char [][CHAR_FNAME_LENGTH],
                int [], int, clpar *, int, int, int, float [],
                multiamp, multiamp, float [], float [],
                FloatTwoDArray *, FloatTwoDArray *, float *,
                ShortTwoDArray *, int *, char *);
    int     PutKeyFlt (Hdr *, char *, float, char *);
    int     PutKeyDbl (Hdr *, char *, double, char *);
    int     PutKeyStr (Hdr *, char *, char *, char *);
    int     GetKeyStr (Hdr *, char *, int, char *, char *, int);
    int     PutKeyInt (Hdr *, char *, int, char *);
    int     GetKeyInt (Hdr *, char *, int, int, int *);
    void    UFilename (char *, Hdr *);
    void    UMemType (char *, Hdr *);
    void    UExpname (char *, Hdr *);
    int     LoadHdr (char *, Hdr *);
    void    UpperAll (char *, char *, int);
    void    TimeStamp (char *, char *);
    void    WhichError (int);
    void    PrSwitch (char *, int);
    void    FindAsnRoot (char *, char *);
    void    initmulti (multiamp *);
    /* -------------------------------- begin ---------------------------------- */
    /* Initialize necessary structures */
    InitRefImg (&shadref);
    root[0] = '\0';
    uroot[0] = '\0';
    initmulti (&noise);
    initmulti (&gain);

    numext = 0;
    nextend = 0;


    /* Since CR-SPLIT images are in separate files, we need to
        combine the same chip's exposure from each file.  Therefore
        we will loop over each extension in the first image, determine
        what chip that corresponds to, and get the same chip from the
        rest of the images (which could be in any arbitrary
        extension in each of the images).
    */

    /* First, let's determine how many extensions/chips in each file */
    c_imtgetim (tpin, fimage, CHAR_FNAME_LENGTH);

    if (LoadHdr (fimage, &phdr) )
        return (status = ERROR_RETURN);

    if (GetKeyInt (&phdr, "NEXTEND", NO_DEFAULT, 0, &nextend) == 0)
        numext = nextend / EXT_PER_GROUP;
    else
        numext = 1;

    shadswitch = 0;
    /* Check to see if SHADCORR was set to PERFORM in image header */
    if (GetSwitch (&phdr, "SHADCORR", &shadswitch) )
        return(status);

    /* If shadcorr was set either by the user on the command line
        or in the image header, initialize shadcorr processing.
    */
    if (par->shadcorr == PERFORM || shadswitch == PERFORM) {

        /* Use par->shadcorr as switch for performing shading correction */
        par->shadcorr = PERFORM;
        shadrefname = calloc(CHAR_FNAME_LENGTH, sizeof(char));

        if (GetKeyStr (&phdr, "SHADFILE", NO_DEFAULT, "", shadrefname, CHAR_FNAME_LENGTH) )
            return(status);
        strcpy (shadref.name, shadrefname);
        /* Read in PEDIGREE and DESCRIPTION for SHADFILE */
        if (ImgPedigree (&shadref) )
            return (status);
        /* If a DUMMY shadfile was specified, turn off shadcorr */
        if (shadref.goodPedigree == DUMMY)
            par->shadcorr = OMIT;
        free (shadrefname);
    }

    freeHdr (&phdr);

    /* Initialize efac */
    for (n = 0; n < MAX_FILES; n++) efac[n] = 1.0;

    /* calculate the scaling factors due to different exposure time */
    strcpy (par->expname, "EXPTIME");
    if (cr_scaling (par->expname, tpin, efac, &nimgs, &expend, &expstart) ){
        WhichError (status);
        return (status);
    }

    /* make sure there is more than one image to process */
    if (nimgs < 2) {
        trlmessage ("Needs more than one input image.");
        return (status = NOTHING_TO_DO);
    }

    /* calculate the total exposure time */
    exptot = 0.;
    non_zero = 0;
    for (n = 0; n < nimgs; ++n) {
        exptot += efac[n];
        /* Count how many inputs have non-zero(valid) EXPTIME */
        if (efac[n] > 0.) non_zero++;
    }
    /* for the case of all images have zero exposure time, use equal
        exposure time of 1. */
    if (exptot == 0.) {
        for (n = 0; n < nimgs; ++n) {
            efac[n] = 1.;
        }
        texpt = (float) nimgs;
        non_zero = nimgs;
    } else {
        texpt = exptot;
    }

    /* Now, start the loop. */
    for (extver = 1; extver <= numext; extver++) {

        if (par->printtime) {
            TimeStamp ("Start cosmic ray rejection","");
        }

        /* open input files and temporary files, check the parameters */
        if (acsrej_check (tpin, extver, numext, par, newpar, imgname, ext,
            ipsci, ipdq, &noise, &gain, &dim_x, &dim_y, nimgs)) {
            WhichError (status);
            return(status);
        }

        /* Now that we have read in SHADCORR, report if it will be performed */
        PrSwitch ("shadcorr", par->shadcorr);

        /* read in the parameters */
        if (rejpar_in (par, newpar, nimgs, exptot,   &niter, sigma) )
            return(status);

        /* allocate array space */
        efacsum = calloc (dim_x*dim_y, sizeof(float));
        work    = calloc (nimgs*dim_x, sizeof(float));

        /* calculate the sky levels */
        acsrej_sky (par->sky, ipsci, ipdq, nimgs, par->badinpdq, skyval);
        if (status != ACS_OK) {
            WhichError (status);
            return (status);
        }
        if (par->verbose) {
            for (n = 0; n < nimgs; n++) {
                sprintf (MsgText, "sky of '%s[sci,%d]' is %0.3f DN", imgname[n], ext[n], skyval[n]);
                trlmessage (MsgText);
            }
        }

        /* use the first input image to set up the data structure */
        initSingleGroup (&sg);

        /* Find the first image in the input list which has an
            EXPTIME > 0. to use for initializing the output SingleGroup.
        */
        found = 0;
        n = 0;
        /* By default, simply use the first one, so initialize accordingly.*/
        strcpy (imgdefault, imgname[0]);
        do {
            if (efac[n] > 0.) {
                strcpy(imgdefault,imgname[n]);
                found = 1;
            }
            n++;
        } while (found == 0);

        getSingleGroup (imgdefault, extver, &sg);

        if (non_zero > 1){
            /* compute the initial pixel values to be used to compare against all
               images. */
            if (non_zero < nimgs){
                trlwarn ("Some input exposures had EXPTIME = 0.");
            }

            if (acsrej_init (ipsci, ipdq, par, nimgs, dim_x, dim_y,
                    noise, gain, efac, skyval, &sg, work) ) {
                WhichError(status);
                closeSciDq(nimgs, ipsci, ipdq, par);
                return (status);
            }

            if (par->printtime)
                TimeStamp ("Calculated initial guess for extension", "");

            /* do the iterative cosmic ray rejection calculations */
            if (acsrej_loop (ipsci, ipdq, imgname, ext, nimgs, par, niter, dim_x, dim_y,
                    sigma, noise, gain, efac, skyval,
                    &sg.sci.data, &sg.err.data, efacsum, &sg.dq.data,
                    &nrej, shadref.name) ) {
                WhichError(status);
                closeSciDq(nimgs, ipsci, ipdq, par);
                return (status);
            }
        } else {
            trlwarn ("Cosmic-ray rejection NOT performed!");
            if (non_zero > 0) {
                trlwarn ("Some input exposures had EXPTIME = 0.");
                trlwarn ("Output product will not be cosmic-ray cleaned!");
            } /*else {
                trlwarn ("ALL input exposures had EXPTIME = 0.");
                trlwarn ("Output product will be BLANK!");
            } */
        } /* End if(non_zero) block */


        /* must close all images, now that we are done reading them */
        closeSciDq(nimgs, ipsci, ipdq, par);

        /* calculate the total sky ... */
        skysum = 0.;
        for (n = 0; n < nimgs; ++n) {
            skysum += skyval[n];
        }
        /* ... and force it to be non-negative */
        if (skysum < 0.) skysum = 0.;

        if (par->printtime){
            if (non_zero > 1){
                TimeStamp ("Finished detecting cosmic rays on extension", "");
            } else {
                TimeStamp ("Done checking this extension","");
            }
        }

        /* write to the output image */
        if (non_zero > 0){
            for (j = 0; j < dim_y; ++j) {
                for (i = 0; i < dim_x; ++i) {
                    PPix(&sg.sci.data,i,j) = PPix(&sg.sci.data,i,j)*texpt + skysum;
                    PPix(&sg.err.data,i,j) *= texpt;
                }
            }
        } else {
            for (j = 0; j < dim_y; ++j) {
                for (i = 0; i < dim_x; ++i) {
                    PPix(&sg.sci.data,i,j) = par->fillval;
                    PPix(&sg.err.data,i,j) = 0.;
                    /* Set DQ value to one which will always be considered BAD */
                    PPix(&sg.dq.data,i,j) = 1;
                }
            }
                    /* Set at least one pixel to a different value to insure
                      that an image array actually gets produced. */
                    PPix(&sg.err.data,0,0) = -1.;
                    PPix(&sg.dq.data,0,0) = 8;
        }

        /* update the exposure time of the output images */
        PutKeyFlt (sg.globalhdr, "TEXPTIME", exptot, "");
        PutKeyFlt (sg.globalhdr, "SKYSUM", skysum, "Total sky level (DN)");
        PutKeyDbl (sg.globalhdr, "EXPSTART", expstart, "computed exposure start time (Modified Julian Date)");
        PutKeyDbl (sg.globalhdr, "EXPEND", expend, "exposure end time (Modified Julian Date)");
        /*
            Updated REJ_RATE to use 'texpt' as a safe value when
            EXPTIME=0 for all members. WJH, 24 Feb 2003
        */
        PutKeyFlt (sg.globalhdr, "REJ_RATE", (float)nrej/texpt,
                "Cosmic ray impact rate (pixels/sec)");
        PutKeyFlt (sg.globalhdr, "EXPTIME", exptot, "");
        if (par->shadcorr) {
            logit = 0;
            if (UpdateSwitch ("SHADCORR", par->shadcorr, sg.globalhdr, &logit) )
                return (status);

                PrSwitch ("shadcorr", COMPLETE);

            if (logit) {
                /*Records SHADFILE information in header comments... */
                if (ImgHistory (&shadref, sg.globalhdr))
                    return (status);

            }
        }

        /* record parameters to the output file */
        cr_history (&sg, par, nextend);
        PutKeyInt (&sg.sci.hdr, "NCOMBINE", nimgs, "");
        UFilename (outfile, sg.globalhdr);
        UMemType (mtype, sg.globalhdr);
        FindAsnRoot (outfile, root);
        UpperAll (root, uroot, strlen(root)+1 );
        /*  EXPNAME values modified for all extensions in a SingleGroup.
                   WJH 7 July 1999
        */
        UExpname (root, &sg.sci.hdr);
        UExpname (root, &sg.err.hdr);
        UExpname (root, &sg.dq.hdr);

        PutKeyStr (sg.globalhdr, "ROOTNAME", uroot,"Rootname of the observation set");

        /* Output CHIP to the same EXTVER as the CHIP ID */
        putSingleGroup (outfile, extver, &sg, 0);
        freeSingleGroup (&sg);

        if (par->printtime)
            TimeStamp ("Finished writing out extension", "");

        /* deallocate memories */
        free (efacsum);
        free (work);

    }
    /* Set status to a value which will be understood by
        CALACS to turn off subsequent processing. */
    if (non_zero == 0) status = NO_GOOD_DATA;

    return (status);
}
示例#5
0
int photcalc (WF3Info *wf3, MultiNicmosGroup *input) {
    
/* Arguments:
**	wf3	 i: WFC3 info structure
**	input	io: input image
*/

	/* Local variables */
	PhotPar obs;
	float photfnu;
	char  photmode[CHAR_LINE_LENGTH+1], obsmode[CHAR_LINE_LENGTH+1];
    int status;

	/* Function definitions */
	int GetKeyStr (Hdr *, char *, int, char *, char *, int);
	int PutKeyFlt (Hdr *, char *, float, char *);
	void PrSwitch (char *, int);

	if (wf3->photcorr == PERFORM) {

	/* Extract photmode from sci extension header */
	if ( (status=GetKeyStr (input->group[0].globalhdr, "PHOTMODE", USE_DEFAULT, "",
		       photmode, CHAR_LINE_LENGTH)))
	    return (status);

	/* Convert PHOTMODE string into synphot OBSMODE syntax */
	Phot2Obs (photmode, obsmode);
	if (wf3->verbose) {
	    sprintf (MsgText, "Created obsmode of: %s", obsmode);
	    trlmessage (MsgText);
	}

	/* Initialize PhotPar structure */
	InitPhotPar (&obs, wf3->phot.name, wf3->phot.pedigree);

	/* Get the photometry values from the IMPHTTAB table */
	if (GetPhotTab (&obs, obsmode)) {
	    trlerror ("Error return GetPhotTab.");
	}

	if (wf3->verbose) {
	    sprintf (MsgText, "Computed PHOTFLAM value of %g", obs.photflam);
	}

	/* Update the photometry keyword values in the header */
	if (PutKeyFlt (input->group[0].globalhdr, "PHOTFLAM", obs.photflam, ""))
	    return (status);

	if (PutKeyFlt (input->group[0].globalhdr, "PHOTZPT", obs.photzpt, ""))
	    return (status);

	if (PutKeyFlt (input->group[0].globalhdr, "PHOTPLAM", obs.photplam, ""))
	    return (status);

	if (PutKeyFlt (input->group[0].globalhdr, "PHOTBW", obs.photbw, ""))
	    return (status);

	photfnu = 3.33564e+4 * obs.photflam * obs.photplam*obs.photplam;

	if (PutKeyFlt (input->group[0].globalhdr, "PHOTFNU", photfnu, ""))
	    return (status);

	FreePhotPar (&obs);

	PrSwitch ("photcorr", COMPLETE);
	}

	/* Successful return */
	return (status = 0);
}
示例#6
0
文件: wf3cte.c 项目: sosey/hstcal
int WF3cte (char *input, char *output, CCD_Switch *cte_sw,
        RefFileInfo *refnames, int printtime, int verbose, int onecpu) {

/*
input: filename
output: filename
cte_sw: the calibration flags
refnames: the names of the calibration reference files
onecpu: use parallel processing?

The following are new primary header keywords which will be added to the data
so that they can be updated by the code. They are also specified in the PCTETAB
reference file.

These are taken from the PCTETAB
CTE_NAME - name of cte algorithm
CTE_VER - version number of cte algorithm
CTEDATE0 - date of wfc3/uvis installation in HST, in MJD
CTEDATE1 - reference date of CTE model pinning, in MJD

PCTETLEN - max length of CTE trail
PCTERNOI - readnoise amplitude for clipping
PCTESMIT - number of iterations used in CTE forward modeling
PCTESHFT - number of iterations used in the parallel transfer
PCTENSMD - readnoise mitigation algorithm
PCTETRSH - over-subtraction threshold
PCTEFRAC - cte scaling frac calculated from expstart
PCTERNOI - the readnoise clipping level to use      

#These are taken from getreffiles.c
DRKCFILE is a new dark reference file used only in the CTE branch *_DRC.fits
BIACFILE is a new super-bias reference file used only in the CTE branch *_BIC.fits
PCTETAB is a new reference file FITS table which will contain the software parameter switches for the CTE correction *_CTE.fit

This is the main workhorse function for removing the CTE from WFC3 UVIS images  

Unfortunately this happens before anything else in wfc3, so there's a lot of reading files
at the beginning in order to populate needed information. The rest of the pipeline works
on one chip at a time and the structures are all defined to support that. None of these 
structures are defined until the code enters the single chip loops. This differs from the
CTE correction in ACS which occurs later in the process after basic structures are defined.

*/

    extern int status;

    WF3Info wf3; /*structure with calibration switches and reference files for passing*/
    Hdr phdr; /*primary header for input image, all output information saved here*/
        
    CTEParams cte_pars; /*STRUCTURE HOLDING THE MODEL PARAMETERS*/
    SingleGroup cd; /*SCI 1*/
    SingleGroup ab; /*SCI 2*/
    SingleGroup raz; /* THE LARGE FORMAT COMBINATION OF CDAB*/
    SingleGroup rsz; /* LARGE FORMAT READNOISE CORRECTED IMAGE */
    SingleGroup rsc; /* CTE CORRECTED*/
    SingleGroup rzc; /* FINAL CTE CORRECTED IMAGE */
    SingleGroup chg; /* THE CHANGE DUE TO CTE  */
    SingleGroup raw; /* THE RAW IMAGE IN RAZ FORMAT */
    
    int i,j; /*loop vars*/
    int max_threads=1;
    clock_t begin;
    double  time_spent;
    float hardset=0.0;

    begin = (double)clock();
        
    Bool subarray; /* to verify that no subarray is being used, it's not implemented yet*/

    /*CONTAIN PARALLEL PROCESSING TO A SINGLE THREAD AS USER OPTION*/
#   ifdef _OPENMP
    trlmessage("Using parallel processing provided by OpenMP inside CTE routine");
    if (onecpu){
        omp_set_dynamic(0);
        max_threads=1;
        sprintf(MsgText,"onecpu == TRUE, Using only %i threads/cpu", max_threads);
    } else {
        omp_set_dynamic(0);
        max_threads = omp_get_num_procs(); /*be nice, use 1 less than avail?*/
        sprintf(MsgText,"Setting max threads to %i of %i cpus",max_threads, omp_get_num_procs()); 
    }
    omp_set_num_threads(max_threads);
    trlmessage(MsgText);
#   endif
   

    /* COPY COMMAND-LINE ARGUMENTS INTO WF3. */ 
    WF3Init (&wf3);
    strcpy (wf3.input, input);
    strcpy (wf3.output, output);

    PrBegin ("WFC3CTE");
    if (wf3.printtime)
        TimeStamp("WFC3CTE Started: ",wf3.rootname);

    /* CHECK WHETHER THE OUTPUT FILE ALREADY EXISTS. */
    if (FileExists (wf3.output)){
        WhichError(status);
        return (ERROR_RETURN);
    }

    wf3.pctecorr = cte_sw->pctecorr;
    wf3.darkcorr = cte_sw->darkcorr;
    wf3.biascorr = cte_sw->biascorr;
    wf3.blevcorr = cte_sw->blevcorr;
    wf3.printtime = printtime;
    wf3.verbose = verbose;
    wf3.refnames = refnames;

    PrFileName ("input", wf3.input);
    PrFileName ("output", wf3.output);

    if (wf3.biascorr == COMPLETE){
        trlmessage("BIASCORR complete for input image, CTE can't be performed");
        return(ERROR_RETURN);
    }
    if (wf3.darkcorr == COMPLETE){
        trlmessage("DARKCORR complete for input image, CTE can't be performed");
        return(ERROR_RETURN);
    }
    if (wf3.blevcorr == COMPLETE){
        trlmessage("BLEVCORR complete for input image, CTE can't be performed");
        return(ERROR_RETURN);
    }


    /* DETERMINE THE NAMES OF THE TRAILER FILES BASED ON THE INPUT
       AND OUTPUT FILE NAMES, THEN INITIALIZE THE TRAILER FILE BUFFER
       WITH THOSE NAMES.
       */
    if (initCTETrl (input, output))
        return (status);
    

    /* OPEN INPUT IMAGE IN ORDER TO READ ITS PRIMARY HEADER. */
    if (LoadHdr (wf3.input, &phdr) ){
        WhichError(status);
        return (ERROR_RETURN);
    }

    /* GET KEYWORD VALUES FROM PRIMARY HEADER. */
    if (GetKeys (&wf3, &phdr)) {
        freeHdr (&phdr);
        return (status);
    }

    if (GetCTEFlags (&wf3, &phdr)) {
        freeHdr(&phdr);
        return (status);
    }

    /* OPEN THE INPUT IMAGES AND GET THE  SCIENCE EXTENSIONS  */
    initSingleGroup (&cd);
    getSingleGroup (wf3.input, 1, &cd);
    
    if (hstio_err())
        return (status = OPEN_FAILED);

    /*** MAKE SURE THIS IS NOT A SUBARRAY ***/
    if (GetKeyBool (cd.globalhdr, "SUBARRAY", NO_DEFAULT, 0, &subarray))
        return (status=KEYWORD_MISSING);

    if (subarray) {
        sprintf(MsgText,"**SUBARRAY FOUND!; SUBARRAY images are not yet supported for CTE**");
        trlmessage(MsgText);
        status=ERROR_RETURN;
        return(status);
    }   
    
    initSingleGroup (&ab);
    getSingleGroup (wf3.input, 2, &ab);
    if (hstio_err())
        return (status = OPEN_FAILED);

    if (GetKeyBool (ab.globalhdr, "SUBARRAY", NO_DEFAULT, 0, &subarray))
        return (status=KEYWORD_MISSING);

    if (subarray) {
        sprintf(MsgText,"SUBARRAY FOUND; **SUBARRAY images are not yet supported for CTE**");
        trlmessage(MsgText);
        status=ERROR_RETURN;
        return(status);
    }

    /*READ IN THE CTE PARAMETER TABLE*/
    initCTEParams(&cte_pars);
    if (GetCTEPars (wf3.pctetab.name,&cte_pars))
        return (status);

    if (verbose){
        PrRefInfo ("pctetab", wf3.pctetab.name, wf3.pctetab.pedigree,
                wf3.pctetab.descrip, wf3.pctetab.descrip2);
    }
    
    
    /*SAVE THE PCTETABLE INFORMATION TO THE HEADER OF THE SCIENCE IMAGE
      AFTER CHECKING TO SEE IF THE USER HAS SPECIFIED ANY CHANGES TO THE
      CTE CODE VARIABLES.
    */
    if (CompareCTEParams(&cd, &cte_pars)){
        return (status);
    }    


    /*SET UP THE ARRAYS WHICH WILL BE PASSED AROUND*/  
    initSingleGroup(&raz);
    allocSingleGroup(&raz, RAZ_COLS, RAZ_ROWS);

    initSingleGroup(&rsz);
    allocSingleGroup(&rsz, RAZ_COLS, RAZ_ROWS);

    initSingleGroup(&rsc);
    allocSingleGroup(&rsc, RAZ_COLS, RAZ_ROWS);

    initSingleGroup(&rzc);
    allocSingleGroup(&rzc, RAZ_COLS, RAZ_ROWS);
    
    initSingleGroup(&raw);
    allocSingleGroup(&raw, RAZ_COLS, RAZ_ROWS);
    
    initSingleGroup(&chg);    
    allocSingleGroup(&chg, RAZ_COLS, RAZ_ROWS);

    for (i=0;i<RAZ_COLS;i++){ 
        for(j=0;j<RAZ_ROWS;j++){ 
            Pix(raw.sci.data,i,j)=hardset;
            Pix(rsz.sci.data,i,j)=hardset;
            Pix(raz.sci.data,i,j)=hardset;
            Pix(rsc.sci.data,i,j)=hardset;
            Pix(rzc.sci.data,i,j)=hardset;
            Pix(chg.sci.data,i,j)=hardset;
        }
    }            


    /* SAVE A COPY OF THE RAW IMAGE FOR LATER */
    makesciRAZ(&cd,&ab,&raw);

    /***SUBTRACT THE CTE BIAS FROM BOTH CHIPS IN PLACE***/
    if (doCteBias(&wf3,&cd)){
        freeSingleGroup(&cd);
        return(status);
    }

    
    if (doCteBias(&wf3,&ab)){
        freeSingleGroup(&ab);
        return(status);
    }
      

    /*CONVERT TO RAZ FORMAT AND CORRECT FOR GAIN*/
    if (raw2raz(&wf3, &cd, &ab, &raz))
        return (status);

    /***CALCULATE THE SMOOTH READNOISE IMAGE***/
    trlmessage("CTE: Calculating smooth readnoise image");
    
 
    /***CREATE THE NOISE MITIGATION MODEL ***/
    if (cte_pars.noise_mit == 0) {
        if (raz2rsz(&wf3, &raz, &rsz, cte_pars.rn_amp, max_threads))
            return (status);
    } else {
        trlmessage("Only noise model 0 implemented!");
        return (status=ERROR_RETURN);
    }

    /***CONVERT THE READNOISE SMNOOTHED IMAGE TO RSC IMAGE
        THIS IS WHERE THE CTE GETS CALCULATED         ***/
    if (rsz2rsc(&wf3, &rsz, &rsc, &cte_pars))
        return (status);
       
    /*** SAVE USEFULL HEADER INFORMATION ***/
    if (cteHistory (&wf3, cd.globalhdr))
        return (status);
    
    /*** CREATE THE FINAL CTE CORRECTED IMAGE, PUT IT BACK INTO ORIGNAL RAW FORMAT***/
    for (i=0;i<RAZ_COLS;i++){
        for(j=0; j<RAZ_ROWS; j++){
            Pix(chg.sci.data,i,j) = (Pix(rsc.sci.data,i,j) - Pix(rsz.sci.data,i,j))/wf3.ccdgain;
            Pix(rzc.sci.data,i,j) =  Pix(raw.sci.data,i,j) + Pix(chg.sci.data,i,j);
        }
    }
            
    /*BACK TO NORMAL FORMATTING*/
    undosciRAZ(&cd,&ab,&rzc);
    
    /*UPDATE THE OUTPUT HEADER ONE FINAL TIME*/
    PutKeyDbl(cd.globalhdr, "PCTEFRAC", cte_pars.scale_frac,"CTE scaling fraction based on expstart");
    trlmessage("PCTEFRAC saved to header");
    
    /*SAVE THE NEW RAW FILE WITH UPDATED SCIENCE ARRAYS AND PRIMARY HEADER TO RAC*/
    putSingleGroup(output,cd.group_num, &cd,0);
    putSingleGroup(output,ab.group_num, &ab,0);


    /** CLEAN UP **/    
    freeSingleGroup(&rzc);
    freeSingleGroup(&rsc);
    freeSingleGroup(&chg);
    freeSingleGroup(&raz);
    freeSingleGroup(&rsz);
    freeSingleGroup(&raw);
    
    time_spent = ((double) clock()- begin +0.0) / CLOCKS_PER_SEC;
    if (verbose){
        sprintf(MsgText,"CTE run time: %.2f(s) with %i procs/threads\n",time_spent,max_threads);
        trlmessage(MsgText);
    }

    PrSwitch("pctecorr", COMPLETE);
    if(wf3.printtime)
        TimeStamp("PCTECORR Finished",wf3.rootname);

    return (status);
}