Index: trunk/ppImage/src/ppImageFileCheck.c
===================================================================
--- trunk/ppImage/src/ppImageFileCheck.c	(revision 14001)
+++ trunk/ppImage/src/ppImageFileCheck.c	(revision 14001)
@@ -0,0 +1,60 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "ppImage.h"
+
+void ppImageFileCheck (pmConfig *config) {
+
+    // add the output names to the output-type files
+    psMetadataItem *item = NULL;
+    psMetadataIterator *iter = psMetadataIteratorAlloc (config->files, PS_LIST_HEAD, NULL);
+    while ((item = psMetadataGetAndIncrement (iter)) != NULL) {
+        pmFPAfile *file = item->data.V;
+        pmFPA *fpa = file->fpa;
+        fprintf (stderr, "file %s\n", file->name);
+        if (!fpa) {
+            fprintf (stderr, "  has no FPA\n");
+            continue;
+        }
+        if (fpa->hdu) {
+            if (fpa->hdu->images) fprintf (stderr, "  (%d,%d) images\n", -1, -1);
+            if (fpa->hdu->weights) fprintf (stderr, "  (%d,%d) weights\n", -1, -1);
+            if (fpa->hdu->masks) fprintf (stderr, "  (%d,%d) masks\n", -1, -1);
+            if (fpa->hdu->header) fprintf (stderr, "  (%d,%d) header\n", -1, -1);
+        } else {
+            // fprintf (stderr, "  has no fpa data (%d,%d)\n", -1, -1);
+        }
+        for (int i = 0; i < fpa->chips->n; i++) {
+            pmChip *chip = fpa->chips->data[i];
+            if (chip->hdu) {
+                if (chip->hdu->images) fprintf (stderr, "  (%d,%d) images\n", i, -1);
+                if (chip->hdu->weights) fprintf (stderr, "  (%d,%d) weights\n", i, -1);
+                if (chip->hdu->masks) fprintf (stderr, "  (%d,%d) masks\n", i, -1);
+                if (chip->hdu->header) fprintf (stderr, "  (%d,%d) header\n", i, -1);
+            } else {
+                // fprintf (stderr, "  has no chip data (%d,%d)\n", i, -1);
+            }
+            for (int j = 0; j < chip->cells->n; j++) {
+                pmCell *cell = chip->cells->data[j];
+                if (cell->hdu) {
+                    if (cell->hdu->images) fprintf (stderr, "  (%d,%d) images\n", i, j);
+                    if (cell->hdu->weights) fprintf (stderr, "  (%d,%d) weights\n", i, j);
+                    if (cell->hdu->masks) fprintf (stderr, "  (%d,%d) masks\n", i, j);
+                    if (cell->hdu->header) fprintf (stderr, "  (%d,%d) header\n", i, j);
+                } else {
+                    // fprintf (stderr, "  has no cell data (%d,%d)\n", i, j);
+                }
+                for (int k = 0; k < cell->readouts->n; k++) {
+                    pmReadout *readout = cell->readouts->data[k];
+                    if (readout) {
+                        if (readout->image) fprintf (stderr, "  (%d,%d,%d) image\n", i, j, k);
+                        if (readout->weight) fprintf (stderr, "  (%d,%d,%d) weight\n", i, j, k);
+                        if (readout->mask) fprintf (stderr, "  (%d,%d,%d) masks\n", i, j, k);
+                    }
+                }
+            }
+        }
+    }
+    psFree (iter);
+}