ASTROSAT CZTI

Data Quality Report

Orbit 56400

Creation date: 2026-03-02T03:14:08.354249
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_083T05_9000006554_56400cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56400cztM0_level2_quad_clean.evt
Size (bytes)1,035,794,88070,107,840
Size987.8 MB 66.9 MB
Events in quadrant A11,555,768347,645
Events in quadrant B6,762,171568,132
Events in quadrant C3,448,661607,367
Events in quadrant D16,044,673120,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390672
B0248711
C0154181
D0523381

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6860327247.696793%
B6861140620.492640%
C6861721.049410%
D6861566082.495263%

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 7674 6859 3058 3058 39.85% 44.58%
B 7676 6862 889 889 11.58% 12.96%
C 7676 6862 49 49 0.64% 0.71%
D 7675 6861 4954 4954 64.55% 72.21%

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 3 6392516 49084.58 513 500 130.2
A 4 95 1006505 7725.16 513 500 130.2
A 12 194 762434 5850.93 513 500 130.2
B 4 206 2534980 18275.82 647 623 138.7
B 5 172 848396 6113.48 647 623 138.7
B 4 171 316585 2278.47 647 623 138.7
C 12 249 158972 826.68 696 691 191.5
C 15 230 150019 779.92 696 691 191.5
C 6 223 106279 551.47 696 691 191.5
D 8 129 14255336 156247.0 313 296 91.2
D 8 240 217451 2380.2 313 296 91.2
D 2 249 72383 790.13 313 296 91.2

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