ASTROSAT CZTI

Data Quality Report

Orbit 42175

Creation date: 2024-06-27T22:37:46.762133
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/AS1A11_032T04_9000005766_42175cztM0_level2.fits modeM0/AS1A11_032T04_9000005766_42175cztM0_level2_quad_clean.evt
Size (bytes)397,503,360110,304,000
Size379.1 MB 105.2 MB
Events in quadrant A3,704,203739,779
Events in quadrant B3,665,604734,307
Events in quadrant C3,185,231725,448
Events in quadrant D3,625,527662,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149272
B0156672
C0137663
D0157662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6858350.510353%
B68582383.470400%
C685830.043745%
D6858921.341499%

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 9663 6860 22 22 0.23% 0.32%
B 9663 6860 193 193 2.00% 2.81%
C 9663 6860 0 0 0.00% 0.00%
D 9663 6860 84 84 0.87% 1.22%

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 653017 4200.71 749 734 155.3
A 15 223 91301 583.25 749 734 155.3
A 12 189 38644 244.14 749 734 155.3
B 3 112 556720 3898.22 732 711 142.6
B 5 255 78927 548.38 732 711 142.6
B 0 229 71460 496.03 732 711 142.6
C 15 214 285984 1645.39 734 739 173.4
C 0 207 35952 203.12 734 739 173.4
C 13 61 4808 23.47 734 739 173.4
D 12 233 209868 1176.22 728 706 177.8
D 10 199 208568 1168.91 728 706 177.8
D 1 52 116079 648.8 728 706 177.8

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