ASTROSAT CZTI

Data Quality Report

Orbit 56101

Creation date: 2026-02-09T23:21:21.499432
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_083T03_9000006548_56101cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56101cztM0_level2_quad_clean.evt
Size (bytes)569,243,52090,956,160
Size542.9 MB 86.7 MB
Events in quadrant A6,979,898533,203
Events in quadrant B3,529,296673,195
Events in quadrant C6,678,662538,704
Events in quadrant D3,379,042555,236

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252151
B0151553
C0243921
D0149981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6502118818.271301%
B65021472.260843%
C650289713.795755%
D65021402.153184%

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 7542 6502 992 992 13.15% 15.26%
B 7542 6503 32 32 0.42% 0.49%
C 7542 6503 746 746 9.89% 11.47%
D 7542 6503 71 71 0.94% 1.09%

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 12 115 2326414 14296.45 651 635 162.7
A 15 32 945247 5806.49 651 635 162.7
A 3 14 943159 5793.65 651 635 162.7
B 9 254 293727 2005.57 691 668 146.1
B 10 247 241923 1651.04 691 668 146.1
B 5 185 72993 494.96 691 668 146.1
C 12 254 3620848 20666.59 637 630 175.2
C 12 252 284548 1620.79 637 630 175.2
C 9 38 133648 759.35 637 630 175.2
D 8 240 231170 1215.29 666 636 189.7
D 14 52 185229 973.11 666 636 189.7
D 2 249 92178 482.58 666 636 189.7

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