ASTROSAT CZTI

Data Quality Report

Orbit 34340

Creation date: 2022-02-03T09:50:45.020748
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_001T05_9000004902_34340cztM0_level2.evt modeM0/AS1C07_001T05_9000004902_34340cztM0_level2_quad_clean.evt
Size (bytes)484,686,720101,620,800
Size462.2 MB 96.9 MB
Events in quadrant A2,666,278671,307
Events in quadrant B3,186,492680,930
Events in quadrant C3,126,931675,649
Events in quadrant D5,292,304630,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121482
B0136021
C0130491
D0199671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A600390.149925%
B6003911.515909%
C6003470.782942%
D60033115.180743%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8928 6005 5 5 0.06% 0.08%
B 8928 6005 54 54 0.60% 0.90%
C 8928 6005 37 37 0.41% 0.62%
D 8928 6005 264 264 2.96% 4.40%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 31011 227.38 672 659 133.5
A 9 143 28956 211.98 672 659 133.5
A 13 254 8903 61.76 672 659 133.5
B 5 172 282429 2203.62 668 651 127.9
B 4 251 85875 666.49 668 651 127.9
B 0 229 70137 543.41 668 651 127.9
C 15 214 248046 1630.23 657 661 151.7
C 14 254 210079 1380.04 657 661 151.7
C 0 10 60177 392.2 657 661 151.7
D 12 227 1029618 6524.47 646 628 157.7
D 8 195 860590 5452.72 646 628 157.7
D 12 235 427057 2703.84 646 628 157.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter