ASTROSAT CZTI

Data Quality Report

Orbit 55073

Creation date: 2025-12-02T19:31:59.732931
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_025T01_9000006530_55073cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55073cztM0_level2_quad_clean.evt
Size (bytes)608,832,000105,998,400
Size580.6 MB 101.1 MB
Events in quadrant A4,203,290721,925
Events in quadrant B3,971,121780,906
Events in quadrant C3,690,667693,405
Events in quadrant D10,067,575472,090

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179820
B0175000
C0167493
D03523812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77801061.362468%
B77801441.850900%
C7780360.462725%
D7778224928.914888%

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 7780 7780 95 95 1.22% 1.22%
B 7780 7780 102 102 1.31% 1.31%
C 7781 7781 33 33 0.42% 0.42%
D 7781 7780 2231 2231 28.67% 28.68%

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 15 32 594829 2870.97 834 815 206.9
A 0 8 265484 1279.19 834 815 206.9
A 8 62 29027 136.35 834 815 206.9
B 5 185 505619 2836.21 822 793 178.0
B 2 249 73370 407.75 822 793 178.0
B 4 81 47247 260.99 822 793 178.0
C 13 3 260640 1168.74 814 809 222.3
C 12 252 84893 378.22 814 809 222.3
C 14 254 57792 256.31 814 809 222.3
D 11 129 6107590 30868.63 700 670 197.8
D 9 1 399931 2018.14 700 670 197.8
D 6 239 213671 1076.66 700 670 197.8

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