ASTROSAT CZTI

Data Quality Report

Orbit 55183

Creation date: 2025-12-10T04:25:15.554798
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_022T16_9000006532_55183cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55183cztM0_level2_quad_clean.evt
Size (bytes)447,168,960101,154,240
Size426.5 MB 96.5 MB
Events in quadrant A3,890,176662,333
Events in quadrant B3,228,327721,061
Events in quadrant C3,582,319635,362
Events in quadrant D5,315,937563,790

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165312
B0147962
C0155772
D0208972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68911692.452474%
B6891861.248005%
C68921051.523506%
D68926008.705746%

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 9046 6893 131 131 1.45% 1.90%
B 9046 6893 18 18 0.20% 0.26%
C 9047 6894 67 67 0.74% 0.97%
D 9047 6894 459 459 5.07% 6.66%

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 3 78 403823 2187.48 742 723 184.3
A 0 8 296217 1603.54 742 723 184.3
A 4 249 195801 1058.62 742 723 184.3
B 2 249 95876 590.94 742 714 161.0
B 10 247 87694 540.13 742 714 161.0
B 5 185 42954 262.3 742 714 161.0
C 12 250 210703 1049.09 729 723 200.2
C 10 22 158230 786.93 729 723 200.2
C 1 16 126907 630.43 729 723 200.2
D 2 249 2148365 10874.95 703 672 197.5
D 6 239 122618 617.48 703 672 197.5
D 3 12 72779 365.12 703 672 197.5

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