ASTROSAT CZTI

Data Quality Report

Orbit 53854

Creation date: 2025-09-11T18:24:47.314445
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_057T04_9000006508_53854cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53854cztM0_level2_quad_clean.evt
Size (bytes)693,912,96099,169,920
Size661.8 MB 94.6 MB
Events in quadrant A4,429,583693,603
Events in quadrant B4,955,866724,193
Events in quadrant C9,829,962483,730
Events in quadrant D5,901,182588,870

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180100
B0197180
C0342516
D0225490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73552323.154317%
B73553805.166553%
C7355220229.938817%
D73556448.755948%

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 7354 7354 201 201 2.73% 2.73%
B 7354 7354 235 235 3.20% 3.20%
C 7354 7354 2095 2095 28.49% 28.49%
D 7354 7354 631 631 8.58% 8.58%

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 8 249 471905 2351.73 809 787 200.3
A 0 8 411293 2049.17 809 787 200.3
A 15 174 206545 1027.1 809 787 200.3
B 0 213 576283 3334.6 788 761 172.6
B 5 185 424191 2453.37 788 761 172.6
B 10 245 232988 1345.53 788 761 172.6
C 1 241 3284440 17432.77 669 662 188.4
C 15 224 2619450 13902.5 669 662 188.4
C 15 158 649164 3442.74 669 662 188.4
D 10 172 1928355 8869.11 764 730 217.3
D 3 12 211963 971.9 764 730 217.3
D 3 224 132265 605.2 764 730 217.3

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