ASTROSAT CZTI

Data Quality Report

Orbit 54083

Creation date: 2025-09-27T04:08:20.439440
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_041T01_9000006510_54083cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54083cztM0_level2_quad_clean.evt
Size (bytes)542,640,96096,632,640
Size517.5 MB 92.2 MB
Events in quadrant A3,129,213664,674
Events in quadrant B3,536,680717,542
Events in quadrant C4,352,820614,343
Events in quadrant D8,528,998446,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146702
B0157492
C0179492
D0302022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6934480.692241%
B69341482.134410%
C69343304.759158%
D6934183726.492645%

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 7684 6936 8 8 0.10% 0.12%
B 7684 6936 50 50 0.65% 0.72%
C 7684 6936 289 289 3.76% 4.17%
D 7684 6936 1692 1692 22.02% 24.39%

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 15 174 120868 664.23 730 713 180.9
A 12 15 38013 206.2 730 713 180.9
A 3 14 38005 206.15 730 713 180.9
B 5 236 245513 1572.65 728 702 155.7
B 5 185 214740 1374.97 728 702 155.7
B 0 213 53611 339.88 728 702 155.7
C 12 249 858241 4419.14 707 697 194.1
C 13 3 204502 1050.26 707 697 194.1
C 15 233 160398 822.98 707 697 194.1
D 2 165 3727513 20857.34 629 599 178.7
D 2 172 623157 3484.09 629 599 178.7
D 10 199 606652 3391.72 629 599 178.7

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