ASTROSAT CZTI

Data Quality Report

Orbit 50817

Creation date: 2025-02-19T07:07:54.939682
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/AS1C07_001T01_9000006450_50817cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50817cztM0_level2_quad_clean.evt
Size (bytes)742,985,280112,694,400
Size708.6 MB 107.5 MB
Events in quadrant A6,705,130742,303
Events in quadrant B4,853,063823,096
Events in quadrant C5,249,086742,155
Events in quadrant D10,052,849528,086

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257932
B0203572
C0215942
D0356072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82965446.557377%
B82953754.520796%
C82951922.314647%
D8296230227.748312%

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 8521 8299 421 421 4.94% 5.07%
B 8520 8298 154 154 1.81% 1.86%
C 8520 8298 80 80 0.94% 0.96%
D 8521 8299 1619 1619 19.00% 19.51%

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 4 191 969705 4447.59 878 858 217.8
A 6 161 528637 2422.82 878 858 217.8
A 4 3 248546 1137.04 878 858 217.8
B 4 206 600768 3190.86 889 856 188.0
B 0 172 87247 459.5 889 856 188.0
B 8 128 86147 453.65 889 856 188.0
C 9 38 667402 2725.23 883 871 244.6
C 5 10 153513 624.1 883 871 244.6
C 14 242 95678 387.64 883 871 244.6
D 15 123 3469722 16755.75 738 711 207.0
D 10 181 540112 2605.37 738 711 207.0
D 3 12 497860 2401.29 738 711 207.0

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