ASTROSAT CZTI

Data Quality Report

Orbit 36020

Creation date: 2022-08-09T20:17:27.677995
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/AS1T04_069T01_9000005158_36020cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36020cztM0_level2_quad_clean.evt
Size (bytes)511,850,88085,855,680
Size488.1 MB 81.9 MB
Events in quadrant A2,874,571563,140
Events in quadrant B3,957,273553,938
Events in quadrant C3,133,809550,080
Events in quadrant D5,135,191519,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122493
B0156812
C0129532
D0193142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A591480.135272%
B59141342.265810%
C5914651.099087%
D59142924.937437%

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 7227 5915 0 0 0.00% 0.00%
B 7227 5915 74 74 1.02% 1.25%
C 7227 5915 44 44 0.61% 0.74%
D 7227 5915 267 267 3.69% 4.51%

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 184187 1302.45 690 677 140.9
A 10 255 11631 77.75 690 677 140.9
A 13 254 9280 61.06 690 677 140.9
B 5 172 514881 3947.1 677 661 130.3
B 0 190 351375 2692.04 677 661 130.3
B 4 171 163475 1249.74 677 661 130.3
C 15 214 248663 1605.21 660 664 154.5
C 9 187 224928 1451.59 660 664 154.5
C 0 10 77431 496.89 660 664 154.5
D 12 235 1044717 6434.76 656 638 162.3
D 12 6 511080 3145.9 656 638 162.3
D 12 227 371517 2285.76 656 638 162.3

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