diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index e83efdb5..e758c67f 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -10,7 +10,7 @@ jobs:
       with:
         fetch-depth: 1
     - name: apt
-      run: sudo apt install libusb-1.0-0-dev libsqlite3-dev ninja-build
+      run: sudo apt update && sudo apt install libusb-1.0-0-dev libsqlite3-dev ninja-build
     - name: make
       run: make
 
diff --git a/doc/using.md b/doc/using.md
index 839d1e6e..0e365c96 100644
--- a/doc/using.md
+++ b/doc/using.md
@@ -177,7 +177,8 @@ directory.
 	These all take an optional `--write-flux` option which will cause the raw
 	flux to be written to the specified file as well as the normal decode.
 	There are various `--dump` options for showing raw data during the decode
-	process.
+	process, and `--write-csv` will write a copious CSV report of the state of
+	every sector in the file in machine-readable format.
 
   - `fluxengine write *`: writes various formats of disk. Again, see the
 	per-format documentation [in the index page](../README.md).
diff --git a/lib/image.cc b/lib/image.cc
deleted file mode 100644
index 37fd33b0..00000000
--- a/lib/image.cc
+++ /dev/null
@@ -1,25 +0,0 @@
-#include "globals.h"
-#include "image.h"
-#include "flags.h"
-#include "dataspec.h"
-#include "sector.h"
-#include "sectorset.h"
-#include "imagereader/imagereader.h"
-#include "imagewriter/imagewriter.h"
-#include "fmt/format.h"
-#include <algorithm>
-#include <iostream>
-#include <fstream>
-
-SectorSet readSectorsFromFile(const ImageSpec& spec)
-{
-	return ImageReader::create(spec)->readImage();
-}
-
-void writeSectorsToFile(const SectorSet& sectors, const ImageSpec& spec)
-{
-	std::unique_ptr<ImageWriter> writer(ImageWriter::create(sectors, spec));
-	writer->adjustGeometry();
-	writer->printMap();
-	writer->writeImage();
-}
diff --git a/lib/image.h b/lib/image.h
deleted file mode 100644
index f1d6dd6f..00000000
--- a/lib/image.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef IMAGE_H
-#define IMAGE_H
-
-class SectorSet;
-class ImageSpec;
-
-extern SectorSet readSectorsFromFile(
-	const ImageSpec& filename);
-
-extern void writeSectorsToFile(
-	const SectorSet& sectors,
-	const ImageSpec& filename);
-
-#endif
diff --git a/lib/imagereader/imagereader.cc b/lib/imagereader/imagereader.cc
index c0a1ede7..170629b4 100644
--- a/lib/imagereader/imagereader.cc
+++ b/lib/imagereader/imagereader.cc
@@ -1,5 +1,4 @@
 #include "globals.h"
-#include "image.h"
 #include "flags.h"
 #include "dataspec.h"
 #include "sector.h"
diff --git a/lib/imagereader/imgimagereader.cc b/lib/imagereader/imgimagereader.cc
index 9a1311a8..be194e88 100644
--- a/lib/imagereader/imgimagereader.cc
+++ b/lib/imagereader/imgimagereader.cc
@@ -1,5 +1,4 @@
 #include "globals.h"
-#include "image.h"
 #include "flags.h"
 #include "dataspec.h"
 #include "sector.h"
diff --git a/lib/imagewriter/d64imagewriter.cc b/lib/imagewriter/d64imagewriter.cc
index 01ab7efa..6b840568 100644
--- a/lib/imagewriter/d64imagewriter.cc
+++ b/lib/imagewriter/d64imagewriter.cc
@@ -1,5 +1,4 @@
 #include "globals.h"
-#include "image.h"
 #include "flags.h"
 #include "dataspec.h"
 #include "sector.h"
diff --git a/lib/imagewriter/imagewriter.cc b/lib/imagewriter/imagewriter.cc
index 4f91f2ea..35ce7043 100644
--- a/lib/imagewriter/imagewriter.cc
+++ b/lib/imagewriter/imagewriter.cc
@@ -1,11 +1,12 @@
 #include "globals.h"
-#include "image.h"
 #include "flags.h"
 #include "dataspec.h"
 #include "sector.h"
 #include "sectorset.h"
 #include "imagewriter/imagewriter.h"
 #include "fmt/format.h"
+#include <iostream>
+#include <fstream>
 
 std::map<std::string, ImageWriter::Constructor> ImageWriter::formats =
 {
@@ -63,6 +64,56 @@ void ImageWriter::adjustGeometry()
 	}
 }
 
+void ImageWriter::writeCsv(const std::string& filename)
+{
+	std::ofstream f(filename, std::ios::out);
+	if (!f.is_open())
+		Error() << "cannot open CSV report file";
+
+	f << "\"Physical track\","
+		"\"Physical side\","
+		"\"Logical track\","
+		"\"Logical side\","
+		"\"Logical sector\","
+		"\"Clock (ns)\","
+		"\"Header start (ns)\","
+		"\"Header end (ns)\","
+		"\"Data start (ns)\","
+		"\"Data end (ns)\","
+		"\"Raw data address (bytes)\","
+		"\"User payload length (bytes)\","
+		"\"Status\""
+		"\n";
+
+	for (int track = 0; track < spec.cylinders; track++)
+	{
+		for (int head = 0; head < spec.heads; head++)
+		{
+			for (int sectorId = 0; sectorId < spec.sectors; sectorId++)
+			{
+				f << fmt::format("{},{},", track, head);
+				const auto& sector = sectors.get(track, head, sectorId);
+				if (!sector)
+					f << fmt::format(",,{},,,,,,,,MISSING\n", sectorId);
+				else
+					f << fmt::format("{},{},{},{},{},{},{},{},{},{},{}\n",
+						sector->logicalTrack,
+						sector->logicalSide,
+						sector->logicalSector,
+						sector->clock,
+						sector->headerStartTime,
+						sector->headerEndTime,
+						sector->dataStartTime,
+						sector->dataEndTime,
+						sector->position.bytes,
+						sector->data.size(),
+						Sector::statusToString(sector->status)
+					);
+			}
+		}
+	}
+}
+
 void ImageWriter::printMap()
 {
 	int badSectors = 0;
diff --git a/lib/imagewriter/imagewriter.h b/lib/imagewriter/imagewriter.h
index d2940666..7d40e1f8 100644
--- a/lib/imagewriter/imagewriter.h
+++ b/lib/imagewriter/imagewriter.h
@@ -35,6 +35,7 @@ class ImageWriter
 public:
 	virtual void adjustGeometry();
 	void printMap();
+	void writeCsv(const std::string& filename);
 	virtual void writeImage() = 0;
 
 protected:
diff --git a/lib/imagewriter/imgimagewriter.cc b/lib/imagewriter/imgimagewriter.cc
index e18cdd85..2542e3e6 100644
--- a/lib/imagewriter/imgimagewriter.cc
+++ b/lib/imagewriter/imgimagewriter.cc
@@ -1,5 +1,4 @@
 #include "globals.h"
-#include "image.h"
 #include "flags.h"
 #include "dataspec.h"
 #include "sector.h"
diff --git a/lib/imagewriter/ldbsimagewriter.cc b/lib/imagewriter/ldbsimagewriter.cc
index 87f9a4a9..d9410fb1 100644
--- a/lib/imagewriter/ldbsimagewriter.cc
+++ b/lib/imagewriter/ldbsimagewriter.cc
@@ -1,5 +1,4 @@
 #include "globals.h"
-#include "image.h"
 #include "flags.h"
 #include "dataspec.h"
 #include "sector.h"
diff --git a/lib/reader.cc b/lib/reader.cc
index 5b2f8de5..59980270 100644
--- a/lib/reader.cc
+++ b/lib/reader.cc
@@ -12,12 +12,13 @@
 #include "sectorset.h"
 #include "visualiser.h"
 #include "record.h"
-#include "image.h"
 #include "bytes.h"
 #include "decoders/rawbits.h"
 #include "track.h"
 #include "imagewriter/imagewriter.h"
 #include "fmt/format.h"
+#include <iostream>
+#include <fstream>
 
 FlagGroup readerFlags
 {
@@ -68,6 +69,11 @@ static SettableFlag highDensityFlag(
 	{ "--high-density", "--hd" },
 	"set the drive to high density mode");
 
+static StringFlag csvFile(
+	{ "--write-csv" },
+	"write a CSV report of the disk state",
+	"");
+
 static std::unique_ptr<FluxSink> outputFluxSink;
 
 void setReaderDefaultSource(const std::string& source)
@@ -85,6 +91,16 @@ void setReaderRevolutions(int revolutions)
 	setHardwareFluxSourceRevolutions(revolutions);
 }
 
+static void writeSectorsToFile(const SectorSet& sectors, const ImageSpec& spec)
+{
+	std::unique_ptr<ImageWriter> writer(ImageWriter::create(sectors, spec));
+	writer->adjustGeometry();
+	writer->printMap();
+	if (!csvFile.get().empty())
+		writer->writeCsv(csvFile.get());
+	writer->writeImage();
+}
+
 void Track::readFluxmap()
 {
 	std::cout << fmt::format("{0:>3}.{1}: ", physicalTrack, physicalSide) << std::flush;
@@ -280,7 +296,7 @@ void readDiskCommand(AbstractDecoder& decoder)
 
 	if (!visualise.get().empty())
 		visualiseSectorsToFile(allSectors, visualise.get());
-
+	
     writeSectorsToFile(allSectors, outputSpec);
 	if (failures)
 		std::cerr << "Warning: some sectors could not be decoded." << std::endl;
diff --git a/lib/sectorset.cc b/lib/sectorset.cc
index ee16e7c8..fc059ada 100644
--- a/lib/sectorset.cc
+++ b/lib/sectorset.cc
@@ -1,5 +1,4 @@
 #include "globals.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 
diff --git a/lib/visualiser.cc b/lib/visualiser.cc
index 0e5b40a1..591d866f 100644
--- a/lib/visualiser.cc
+++ b/lib/visualiser.cc
@@ -1,6 +1,5 @@
 #define _USE_MATH_DEFINES
 #include "globals.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 #include "visualiser.h"
diff --git a/lib/writer.cc b/lib/writer.cc
index 3877411b..f079cfd5 100644
--- a/lib/writer.cc
+++ b/lib/writer.cc
@@ -9,9 +9,9 @@
 #include "encoders/encoders.h"
 #include "fluxsource/fluxsource.h"
 #include "fluxsink/fluxsink.h"
+#include "imagereader/imagereader.h"
 #include "fmt/format.h"
 #include "record.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 
@@ -43,6 +43,11 @@ void setWriterDefaultInput(const std::string& input)
     ::input.set(input);
 }
 
+static SectorSet readSectorsFromFile(const ImageSpec& spec)
+{
+	return ImageReader::create(spec)->readImage();
+}
+
 void writeTracks(
 	const std::function<std::unique_ptr<Fluxmap>(int track, int side)> producer)
 {
diff --git a/mkninja.sh b/mkninja.sh
index 95ab72e4..e6c1e1b2 100644
--- a/mkninja.sh
+++ b/mkninja.sh
@@ -192,7 +192,6 @@ buildlibrary libbackend.a \
     lib/fluxsource/streamfluxsource.cc \
     lib/globals.cc \
     lib/hexdump.cc \
-    lib/image.cc \
     lib/ldbs.cc \
     lib/reader.cc \
     lib/sector.cc \
diff --git a/src/fe-inspect.cc b/src/fe-inspect.cc
index b781ff8a..012de083 100644
--- a/src/fe-inspect.cc
+++ b/src/fe-inspect.cc
@@ -4,7 +4,6 @@
 #include "fluxmap.h"
 #include "decoders/fluxmapreader.h"
 #include "decoders/decoders.h"
-#include "image.h"
 #include "protocol.h"
 #include "decoders/rawbits.h"
 #include "record.h"
diff --git a/src/fe-readadfs.cc b/src/fe-readadfs.cc
index 6497c22c..6fca542c 100644
--- a/src/fe-readadfs.cc
+++ b/src/fe-readadfs.cc
@@ -3,7 +3,6 @@
 #include "reader.h"
 #include "fluxmap.h"
 #include "decoders/decoders.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 #include "record.h"
diff --git a/src/fe-readaeslanier.cc b/src/fe-readaeslanier.cc
index 9abbbc01..b1890acb 100644
--- a/src/fe-readaeslanier.cc
+++ b/src/fe-readaeslanier.cc
@@ -3,7 +3,6 @@
 #include "reader.h"
 #include "fluxmap.h"
 #include "decoders/decoders.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 #include "record.h"
diff --git a/src/fe-readamiga.cc b/src/fe-readamiga.cc
index c4e8ecf9..c6e8e6d4 100644
--- a/src/fe-readamiga.cc
+++ b/src/fe-readamiga.cc
@@ -6,7 +6,6 @@
 #include "amiga/amiga.h"
 #include "sector.h"
 #include "sectorset.h"
-#include "image.h"
 #include "record.h"
 #include "fmt/format.h"
 #include <fstream>
diff --git a/src/fe-readampro.cc b/src/fe-readampro.cc
index df7f9d2b..283fcb5f 100644
--- a/src/fe-readampro.cc
+++ b/src/fe-readampro.cc
@@ -3,7 +3,6 @@
 #include "reader.h"
 #include "fluxmap.h"
 #include "decoders/decoders.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 #include "record.h"
diff --git a/src/fe-readapple2.cc b/src/fe-readapple2.cc
index 9055b7a7..2a2be666 100644
--- a/src/fe-readapple2.cc
+++ b/src/fe-readapple2.cc
@@ -6,7 +6,6 @@
 #include "apple2/apple2.h"
 #include "sector.h"
 #include "sectorset.h"
-#include "image.h"
 #include "record.h"
 #include "fmt/format.h"
 #include <fstream>
diff --git a/src/fe-readbrother.cc b/src/fe-readbrother.cc
index a3fc29fb..9dcde0f0 100644
--- a/src/fe-readbrother.cc
+++ b/src/fe-readbrother.cc
@@ -7,7 +7,6 @@
 #include "brother/brother.h"
 #include "sector.h"
 #include "sectorset.h"
-#include "image.h"
 #include "record.h"
 #include "fmt/format.h"
 #include <fstream>
diff --git a/src/fe-readc64.cc b/src/fe-readc64.cc
index db4c44d0..30281b27 100644
--- a/src/fe-readc64.cc
+++ b/src/fe-readc64.cc
@@ -6,7 +6,6 @@
 #include "c64/c64.h"
 #include "sector.h"
 #include "sectorset.h"
-#include "image.h"
 #include "record.h"
 #include "fmt/format.h"
 #include <fstream>
diff --git a/src/fe-readdfs.cc b/src/fe-readdfs.cc
index 8534f916..121d064f 100644
--- a/src/fe-readdfs.cc
+++ b/src/fe-readdfs.cc
@@ -3,7 +3,6 @@
 #include "reader.h"
 #include "fluxmap.h"
 #include "decoders/decoders.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 #include "record.h"
diff --git a/src/fe-readf85.cc b/src/fe-readf85.cc
index 135dd95d..45a98134 100644
--- a/src/fe-readf85.cc
+++ b/src/fe-readf85.cc
@@ -6,7 +6,6 @@
 #include "f85/f85.h"
 #include "sector.h"
 #include "sectorset.h"
-#include "image.h"
 #include "record.h"
 #include "fmt/format.h"
 #include <fstream>
diff --git a/src/fe-readfb100.cc b/src/fe-readfb100.cc
index 92d5907f..108c23b5 100644
--- a/src/fe-readfb100.cc
+++ b/src/fe-readfb100.cc
@@ -3,7 +3,6 @@
 #include "reader.h"
 #include "fluxmap.h"
 #include "decoders/decoders.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 #include "record.h"
diff --git a/src/fe-readibm.cc b/src/fe-readibm.cc
index 3a999420..6a26f4fe 100644
--- a/src/fe-readibm.cc
+++ b/src/fe-readibm.cc
@@ -3,7 +3,6 @@
 #include "reader.h"
 #include "fluxmap.h"
 #include "decoders/decoders.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 #include "record.h"
diff --git a/src/fe-readmac.cc b/src/fe-readmac.cc
index b0e09eec..5adcbe1e 100644
--- a/src/fe-readmac.cc
+++ b/src/fe-readmac.cc
@@ -6,7 +6,6 @@
 #include "macintosh/macintosh.h"
 #include "sector.h"
 #include "sectorset.h"
-#include "image.h"
 #include "record.h"
 #include "fmt/format.h"
 #include <fstream>
diff --git a/src/fe-readmx.cc b/src/fe-readmx.cc
index 4d534b8b..4abd3b3b 100644
--- a/src/fe-readmx.cc
+++ b/src/fe-readmx.cc
@@ -4,7 +4,6 @@
 #include "fluxmap.h"
 #include "decoders/decoders.h"
 #include "mx/mx.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 #include "record.h"
diff --git a/src/fe-readvictor9k.cc b/src/fe-readvictor9k.cc
index 1ac91add..3cb17931 100644
--- a/src/fe-readvictor9k.cc
+++ b/src/fe-readvictor9k.cc
@@ -6,7 +6,6 @@
 #include "victor9k/victor9k.h"
 #include "sector.h"
 #include "sectorset.h"
-#include "image.h"
 #include "record.h"
 #include "fmt/format.h"
 #include <fstream>
diff --git a/src/fe-readzilogmcz.cc b/src/fe-readzilogmcz.cc
index e9fd8c9f..faf77428 100644
--- a/src/fe-readzilogmcz.cc
+++ b/src/fe-readzilogmcz.cc
@@ -3,7 +3,6 @@
 #include "reader.h"
 #include "fluxmap.h"
 #include "decoders/decoders.h"
-#include "image.h"
 #include "sector.h"
 #include "sectorset.h"
 #include "record.h"
diff --git a/src/fe-writeamiga.cc b/src/fe-writeamiga.cc
index da13c1d9..76a56d82 100644
--- a/src/fe-writeamiga.cc
+++ b/src/fe-writeamiga.cc
@@ -4,7 +4,6 @@
 #include "amiga/amiga.h"
 #include "writer.h"
 #include "fmt/format.h"
-#include "image.h"
 #include <fstream>
 
 static FlagGroup flags { &writerFlags, &amigaEncoderFlags };
diff --git a/src/fe-writebrother.cc b/src/fe-writebrother.cc
index 19e79d47..c308b988 100644
--- a/src/fe-writebrother.cc
+++ b/src/fe-writebrother.cc
@@ -5,7 +5,6 @@
 #include "brother/brother.h"
 #include "writer.h"
 #include "fmt/format.h"
-#include "image.h"
 #include <fstream>
 
 static FlagGroup flags { &writerFlags, &brotherEncoderFlags };
diff --git a/src/fe-writeibm.cc b/src/fe-writeibm.cc
index 4f1f81f7..16717b35 100644
--- a/src/fe-writeibm.cc
+++ b/src/fe-writeibm.cc
@@ -5,7 +5,6 @@
 #include "ibm/ibm.h"
 #include "writer.h"
 #include "fmt/format.h"
-#include "image.h"
 #include <fstream>
 
 static FlagGroup flags { &writerFlags };