ASTROSAT CZTI

Data Quality Report

Orbit 55014

Creation date: 2025-11-28T20:10:07.282596
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_55014cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55014cztM0_level2_quad_clean.evt
Size (bytes)864,504,00082,368,000
Size824.5 MB 78.6 MB
Events in quadrant A3,600,071679,094
Events in quadrant B3,649,980739,201
Events in quadrant C5,972,034555,928
Events in quadrant D18,211,31211,343

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161580
B0161061
C02319119
D0591339

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73031371.875941%
B7302991.355793%
C7300108914.917808%
D7302719098.466174%

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 7303 7303 66 66 0.90% 0.90%
B 7302 7302 45 45 0.62% 0.62%
C 7303 7302 1070 1070 14.65% 14.65%
D 7302 7301 6603 6603 90.43% 90.44%

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 371827 1903.33 794 772 194.9
A 13 248 107586 547.9 794 772 194.9
A 4 3 14301 69.4 794 772 194.9
B 5 185 287267 1658.46 790 761 172.8
B 5 172 62593 357.92 790 761 172.8
B 2 249 58257 332.82 790 761 172.8
C 4 5 2678413 13593.25 722 716 197.0
C 15 193 184777 934.38 722 716 197.0
C 6 223 103169 520.1 722 716 197.0
D 15 94 17115919 356185.76 161 153 48.1
D 2 172 150286 3124.33 161 153 48.1
D 11 129 148577 3088.76 161 153 48.1

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