ASTROSAT CZTI

Data Quality Report

Orbit 58560

Creation date: 2026-07-25T10:12:54.103650
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_044T04_9000006592_58560cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58560cztM0_level2_quad_clean.evt
Size (bytes)480,522,240110,848,320
Size458.3 MB 105.7 MB
Events in quadrant A3,696,873716,244
Events in quadrant B4,481,893755,973
Events in quadrant C3,920,708703,884
Events in quadrant D5,087,918643,248

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166452
B0185782
C0172892
D0207232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77152152.786779%
B77154105.314323%
C77151051.360985%
D77153484.510693%

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 7730 7716 4 4 0.05% 0.05%
B 7730 7716 67 67 0.87% 0.87%
C 7730 7716 33 33 0.43% 0.43%
D 7730 7716 229 229 2.96% 2.97%

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 8 249 48147 216.79 889 866 218.1
A 10 251 41702 187.24 889 866 218.1
A 4 3 33380 149.08 889 866 218.1
B 0 186 321407 1681.05 874 840 190.7
B 0 171 303236 1585.76 874 840 190.7
B 8 128 74142 384.39 874 840 190.7
C 14 245 134122 554.85 864 855 240.2
C 6 223 98267 405.57 864 855 240.2
C 4 5 75415 310.43 864 855 240.2
D 2 249 750160 3108.84 845 809 241.0
D 3 12 659495 2732.7 845 809 241.0
D 2 207 87682 360.41 845 809 241.0

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