ASTROSAT CZTI

Data Quality Report

Orbit 58270

Creation date: 2026-07-05T21:36:32.853185
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_044T03_9000006588_58270cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58270cztM0_level2_quad_clean.evt
Size (bytes)686,741,76092,321,280
Size654.9 MB 88.0 MB
Events in quadrant A4,198,678621,363
Events in quadrant B5,853,662575,946
Events in quadrant C5,203,756598,958
Events in quadrant D9,634,316521,017

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173030
B0221613
C0204570
D0334520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68612683.906136%
B6861119017.344410%
C68612543.702084%
D686190413.175922%

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 6861 6861 190 190 2.77% 2.77%
B 6861 6861 504 504 7.35% 7.35%
C 6861 6861 182 182 2.65% 2.65%
D 6861 6861 846 846 12.33% 12.33%

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 12 114 868066 4810.51 722 703 180.3
A 4 249 175101 967.23 722 703 180.3
A 3 14 122093 673.25 722 703 180.3
B 6 255 1822929 13014.34 649 625 140.0
B 3 238 809162 5774.32 649 625 140.0
B 10 128 99613 706.94 649 625 140.0
C 6 223 1585505 8198.73 701 695 193.3
C 15 198 350678 1810.58 701 695 193.3
C 13 3 142176 731.93 701 695 193.3
D 12 110 5502047 28192.25 686 659 195.1
D 8 160 347808 1778.99 686 659 195.1
D 2 120 237338 1212.88 686 659 195.1

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