ASTROSAT CZTI

Data Quality Report

Orbit 57395

Creation date: 2026-05-08T01:02:50.144532
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_102T01_9000006572_57395cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57395cztM0_level2_quad_clean.evt
Size (bytes)508,518,72091,356,480
Size485.0 MB 87.1 MB
Events in quadrant A3,048,729639,092
Events in quadrant B3,419,085659,141
Events in quadrant C8,413,943452,094
Events in quadrant D3,441,705566,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01373849
B01501356
C029678196
D01483938

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0111
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6442560.869295%
B64372373.681839%
C6421181528.266625%
D6443771.195095%

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 7514 6451 24 24 0.32% 0.37%
B 7514 6449 141 141 1.88% 2.19%
C 7513 6438 1385 1385 18.43% 21.51%
D 7513 6453 76 76 1.01% 1.18%

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 3 61 148774 861.77 704 687 171.8
A 0 12 70822 408.14 704 687 171.8
A 8 4 37024 211.46 704 687 171.8
B 4 171 502701 3468.59 682 659 144.7
B 5 185 49598 338.12 682 659 144.7
B 0 63 44116 300.24 682 659 144.7
C 15 224 5163353 33015.54 575 571 156.4
C 12 249 613442 3919.26 575 571 156.4
C 6 223 119862 762.86 575 571 156.4
D 8 240 289308 1510.78 673 643 191.1
D 3 224 102998 535.69 673 643 191.1
D 15 142 98019 509.63 673 643 191.1

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