ASTROSAT CZTI

Data Quality Report

Orbit 56332

Creation date: 2026-02-25T13:03:45.774898
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/AS1A14_049T01_9000006552_56332cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56332cztM0_level2_quad_clean.evt
Size (bytes)819,754,56079,945,920
Size781.8 MB 76.2 MB
Events in quadrant A6,771,733572,464
Events in quadrant B3,527,067710,266
Events in quadrant C3,965,849630,605
Events in quadrant D15,564,20144,015

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246782
B0150072
C0163772
D0507902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6640110416.626506%
B66402123.192771%
C66391712.575689%
D6640624794.081325%

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 8905 6642 955 955 10.72% 14.38%
B 8905 6642 56 56 0.63% 0.84%
C 8904 6641 84 84 0.94% 1.26%
D 8905 6640 5141 5141 57.73% 77.42%

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 4 95 2041754 11706.91 712 695 174.3
A 8 25 446939 2559.52 712 695 174.3
A 4 249 426829 2444.18 712 695 174.3
B 5 185 276612 1757.5 740 713 157.0
B 0 231 59610 375.18 740 713 157.0
B 1 255 59431 374.04 740 713 157.0
C 12 252 576479 2899.12 731 727 198.6
C 15 198 117659 588.8 731 727 198.6
C 13 3 103337 516.68 731 727 198.6
D 8 129 12539270 160548.19 267 252 78.1
D 12 3 1352511 17314.17 267 252 78.1
D 11 129 229888 2940.23 267 252 78.1

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