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Report generated at 2020-11-27 17:50:59

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	126657764	148269018
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	124649583	143500908
Mapped(QC-failed)	0	0
% Mapped	98.4100	96.7800
Paired	126657764	148269018
Paired(QC-failed)	0	0
Read1	63328882	74134509
Read1(QC-failed)	0	0
Read2	63328882	74134509
Read2(QC-failed)	0	0
Properly Paired	122578091	140225987
Properly Paired(QC-failed)	0	0
% Properly Paired	96.7800	94.5800
With itself	124024060	141622671
With itself(QC-failed)	0	0
Singletons	625523	1878237
Singletons(QC-failed)	0	0
% Singleton	0.4900	1.2700
Diff. Chroms	847759	652729
Diff. Chroms (QC-failed)	0	0

Marking duplicates (filtered BAM)

Filtered out (samtools view -F 1804):

read unmapped (0x4)
mate unmapped (0x8)
not primary alignment (0x100)
read fails platform/vendor quality checks (0x200)
read is PCR or optical duplicate (0x400)

	rep1	ctl1
Unpaired Reads	0	0
Paired Reads	53903779	59090669
Unmapped Reads	0	0
Unpaired Dupes	0	0
Paired Dupes	268667	523701
Paired Opt. Dupes	9188	14446
% Dupes/100	0.0050	0.0089

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Read Pairs	53871611	57674075
Distinct Read Pairs	53603319	57472830
One Read Pair	53336347	57272993
Two Read Pairs	265670	198503
NRF = Distinct/Total	0.9950	0.9965
PBC1 = OnePair/Distinct	0.9950	0.9965
PBC2 = OnePair/TwoPair	200.7616	288.5246

Mitochondrial reads are filtered out.

NRF (non redundant fraction)
PBC1 (PCR Bottleneck coefficient 1)
PBC2 (PCR Bottleneck coefficient 2)
PBC1 is the primary measure. Provisionally

0-0.5 is severe bottlenecking
0.5-0.8 is moderate bottlenecking
0.8-0.9 is mild bottlenecking
0.9-1.0 is no bottlenecking

Flagstat (filtered/deduped BAM)

Filtered and duplicates removed

	rep1	ctl1
Total	107270224	117133936
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	107270224	117133936
Mapped(QC-failed)	0	0
% Mapped	100.0000	100.0000
Paired	107270224	117133936
Paired(QC-failed)	0	0
Read1	53635112	58566968
Read1(QC-failed)	0	0
Read2	53635112	58566968
Read2(QC-failed)	0	0
Properly Paired	107270224	117133936
Properly Paired(QC-failed)	0	0
% Properly Paired	100.0000	100.0000
With itself	107270224	117133936
With itself(QC-failed)	0	0
Singletons	0	0
Singletons(QC-failed)	0	0
% Singleton	0.0000	0.0000
Diff. Chroms	0	0
Diff. Chroms (QC-failed)	0	0

Peak calling

Reproducibility QC and peak detection statistics

The number of peaks is capped at 300K for peak-caller MACS2

	overlap
Nt	0
N1	117839
Np	0
N optimal	117839
N conservative	117839
Optimal Set	rep1-pr
Conservative Set	rep1-pr
Rescue Ratio	0.0000
Self Consistency Ratio	1.0000
Reproducibility	pass

Overlapping peaks

N1: Replicate 1 self-consistent overlapping peaks (comparing two pseudoreplicates generated by subsampling Rep1 reads)
N2: Replicate 2 self-consistent overlapping peaks (comparing two pseudoreplicates generated by subsampling Rep2 reads)
Nt: True Replicate consisten overlapping peaks (comparing true replicates Rep1 vs Rep2 )
Np: Pooled-pseudoreplicate consistent overlapping peaks (comparing two pseudoreplicates generated by subsampling pooled reads from Rep1 and Rep2 )
Self-consistency Ratio: max(N1,N2) / min (N1,N2)
Rescue Ratio: max(Np,Nt) / min (Np,Nt)
Reproducibility Test: If Self-consistency Ratio >2 AND Rescue Ratio > 2, then 'Fail' else 'Pass'

Enrichment

Strand cross-correlation measures

Performed on subsampled reads (15M)

	rep1
Reads	15000000
Est. Fragment Len.	150
Corr. Est. Fragment Len.	0.1913
Phantom Peak	50
Corr. Phantom Peak	0.2039
Argmin. Corr.	1500
Min. Corr.	0.1793
NSC	1.0671
RSC	0.4886

NOTE1: For SE datasets, reads from replicates are randomly subsampled.
NOTE2: For PE datasets, the first end of each read-pair is selected and the reads are then randomly subsampled.

Normalized strand cross-correlation coefficient (NSC) = col9 in outFile
Relative strand cross-correlation coefficient (RSC) = col10 in outFile
Estimated fragment length = col3 in outFile, take the top value

Fraction of reads in overlapping peaks

	rep1-pr
Fraction of Reads in Peak	0.1774

ppr: Overlapping peaks comparing pooled pseudo replicates
rep1-pr: Overlapping peaks comparing pseudoreplicates from replicate 1
rep2-pr: Overlapping peaks comparing pseudoreplicates from replicate 2
repi-repj: Overlapping peaks comparing true replicates (rep i vs. rep j)

Other quality metrics

Fingerprint and Jensen-Shannon distance

	rep1
% genome enriched	0.2529
AUC	0.4961
CHANCE divergence	0.1141
Elbow Point	0.0000
JS Distance	0.6107
Synthetic AUC	0.5071
Synthetic Elbow Point	0.2099
Synthetic JS Distance	0.3302