ASTROSAT CZTI

Data Quality Report

Orbit 20200624_A09_013T02_9000003734_level2

Creation date: 2025-12-13T00:49:18.101010
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/AS1A09_013T02_9000003734cztM0_level2.fits modeM0/AS1A09_013T02_9000003734cztM0_level2_quad_clean.evt
Size (bytes)1,238,253,1201,062,518,400
Size1.2 GB 1013.3 MB
Events in quadrant A7,654,0286,192,023
Events in quadrant B7,364,1566,211,279
Events in quadrant C7,457,3065,856,188
Events in quadrant D6,435,0205,328,142

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025580
B025580
C025580
D025580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02628180
B02651270
C02616360
D03216190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12532814981.195264%
B12533223111.843903%
C12533022561.800048%
D12531635362.821667%

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 145863 125346 0 0 0.00% 0.00%
B 145863 125338 0 0 0.00% 0.00%
C 145863 125343 0 0 0.00% 0.00%
D 145863 125340 0 0 0.00% 0.00%

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 0 29 6355 9.18 1997 1880 487.6
A 7 110 6204 8.87 1997 1880 487.6
A 9 19 5696 7.83 1997 1880 487.6
B 2 9 6020 11.06 1952 1871 375.0
B 2 8 4998 8.34 1952 1871 375.0
B 5 255 4762 7.71 1952 1871 375.0
C 12 241 5244 6.83 1971 1851 497.0
C 9 233 4989 6.31 1971 1851 497.0
C 3 126 4948 6.23 1971 1851 497.0
D 3 14 4727 6.32 1836 1677 482.7
D 6 231 4615 6.09 1836 1677 482.7
D 15 46 4578 6.01 1836 1677 482.7

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