Open chromatin assays are known to have significant GC bias. Please take this
into consideration as necessary.
Library complexity quality metrics
Library complexity (filtered non-mito BAM)
rep1
rep2
ctl1
Total Fragments
433779
928991
3212811
Distinct Fragments
374971
756855
3112748
Positions with Two Read
45806
122094
89427
NRF = Distinct/Total
0.864429
0.814706
0.968855
PBC1 = OneRead/Distinct
0.861555
0.808264
0.969704
PBC2 = OneRead/TwoRead
7.052744
5.010394
33.753151
Mitochondrial reads are filtered out by default.
The non-redundant fraction (NRF) is the fraction of non-redundant mapped reads
in a dataset; it is the ratio between the number of positions in the genome
that uniquely mapped reads map to and the total number of uniquely mappable
reads. The NRF should be > 0.8. The PBC1 is the ratio of genomic locations
with EXACTLY one read pair over the genomic locations with AT LEAST one read
pair. PBC1 is the primary measure, and the PBC1 should be close to 1.
Provisionally 0-0.5 is severe bottlenecking, 0.5-0.8 is moderate bottlenecking,
0.8-0.9 is mild bottlenecking, and 0.9-1.0 is no bottlenecking. The PBC2 is
the ratio of genomic locations with EXACTLY one read pair over the genomic
locations with EXACTLY two read pairs. The PBC2 should be significantly
greater than 1. See more details at
the ENCODE portal standard for ChIP-Seq pipeline
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
Replication quality metrics
IDR (Irreproducible Discovery Rate) plots
Reproducibility QC and peak detection statistics
overlap
idr
Nt
3953
171
N1
546
22
N2
1886
86
Np
4734
243
N optimal
4734
243
N conservative
3953
171
Optimal Set
pooled-pr1_vs_pooled-pr2
pooled-pr1_vs_pooled-pr2
Conservative Set
rep1_vs_rep2
rep1_vs_rep2
Rescue Ratio
1.1975714647103466
1.4210526315789473
Self Consistency Ratio
3.4542124542124544
3.909090909090909
Reproducibility Test
borderline
borderline
Reproducibility QC
N1: Replicate 1 self-consistent peaks (comparing two pseudoreplicates generated by subsampling Rep1 reads)
N2: Replicate 2 self-consistent peaks (comparing two pseudoreplicates generated by subsampling Rep2 reads)
Ni: Replicate i self-consistent peaks (comparing two pseudoreplicates generated by subsampling RepX reads)
Nt: True Replicate consistent peaks (comparing true replicates Rep1 vs Rep2)
Np: Pooled-pseudoreplicate consistent 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'
Number of raw peaks
rep1
rep2
Number of peaks
11988
27038
Top 300000 raw peaks from spp with FDR 0.01
Peak calling statistics
Peak region size
rep1
rep2
idr_opt
overlap_opt
Min size
96.0
96.0
146.0
200.0
25 percentile
350.0
344.0
450.0
450.0
50 percentile (median)
350.0
344.0
450.0
450.0
75 percentile
350.0
344.0
450.0
450.0
Max size
350.0
407.0
2750.0
2750.0
Mean
349.84484484484483
343.9266587765367
547.3744855967078
455.0625264047317
Enrichment / Signal-to-noise ratio
Strand cross-correlation measures (trimmed/filtered SE BAM)
rep1
rep2
Number of Subsampled Reads
433779
928991
Estimated Fragment Length
120
140
Cross-correlation at Estimated Fragment Length
0.127875080735771
0.221219164931922
Phantom Peak
30
35
Cross-correlation at Phantom Peak
0.1236351
0.2164665
Argmin of Cross-correlation
1500
1500
Minimum of Cross-correlation
0.1196082
0.2090966
NSC (Normalized Strand Cross-correlation coeff.)
1.069117
1.057976
RSC (Relative Strand Cross-correlation coeff.)
2.052887
1.644865
Performed on subsampled (15000000) reads mapped from FASTQs that are trimmed to 50.
Such FASTQ trimming and subsampling reads are for cross-corrleation analysis only.
Untrimmed FASTQs are used for all the other analyses.
NOTE1: For SE datasets, reads from replicates are randomly subsampled to 15000000.
NOTE2: For PE datasets, the first end (R1) of each read-pair is selected and trimmed to 50 the reads are then randomly subsampled to 15000000.
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
Jensen-Shannon distance (filtered/deduped BAM)
rep1
rep2
AUC
0.24605617559918438
0.2918266258687949
Synthetic AUC
0.48187927450926343
0.4872405269766056
X-intercept
0.22406151513942635
0.09073483065384769
Synthetic X-intercept
2.6363813227080067e-25
9.033934261101007e-52
Elbow Point
0.5233374556189412
0.5529600670203854
Synthetic Elbow Point
0.4973976155166552
0.5114789906054102
JS Distance
0.1279512974175897
0.1081951370453402
Synthetic JS Distance
0.24156362523819927
0.24922677181262928
% Genome Enriched
45.45557904815096
34.12554354330395
Diff. Enrichment
28.944761271035762
21.24031879883616
CHANCE Divergence
0.26530633594252695
0.18126641640206032
Peak enrichment
Fraction of reads in peaks (FRiP)
FRiP for spp raw peaks
rep1
rep2
rep1-pr1
rep2-pr1
rep1-pr2
rep2-pr2
pooled
pooled-pr1
pooled-pr2
Fraction of Reads in Peaks
0.16498203992983043
0.24067061455727443
0.10282140172082532
0.16639676637862907
0.12114171748391947
0.15342381278112888
0.24052413891031818
0.21686427778576264
0.22237826418230935
FRiP for overlap peaks
rep1_vs_rep2
rep1-pr1_vs_rep1-pr2
rep2-pr1_vs_rep2-pr2
pooled-pr1_vs_pooled-pr2
Fraction of Reads in Peaks
0.07719827769076185
0.02346817308495531
0.04010032530584061
0.08380889051664948
FRiP for IDR peaks
rep1_vs_rep2
rep1-pr1_vs_rep1-pr2
rep2-pr1_vs_rep2-pr2
pooled-pr1_vs_pooled-pr2
Fraction of Reads in Peaks
0.022850122211918844
0.00921236738785398
0.011131134139753255
0.02536709031733539
For spp raw peaks:
repX: Peak from true replicate X
repX-prY: Peak from Yth pseudoreplicates from replicate X
pooled: Peak from pooled true replicates (pool of rep1, rep2, ...)
pooled-pr1: Peak from 1st pooled pseudo replicate (pool of rep1-pr1, rep2-pr1, ...)
pooled-pr2: Peak from 2nd pooled pseudo replicate (pool of rep1-pr2, rep2-pr2, ...)
For overlap/IDR peaks:
repX_vs_repY: Comparing two peaks from true replicates X and Y
repX-pr1_vs_repX-pr2: Comparing two peaks from both pseudoreplicates from replicate X
pooled-pr1_vs_pooled-pr2: Comparing two peaks from 1st and 2nd pooled pseudo replicates