ASTROSAT CZTI

Data Quality Report

Orbit 53534

Creation date: 2025-08-21T05:22:36.274287
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_004T05_9000006502_53534cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53534cztM0_level2_quad_clean.evt
Size (bytes)744,456,960111,067,200
Size710.0 MB 105.9 MB
Events in quadrant A5,866,128746,429
Events in quadrant B5,279,403809,639
Events in quadrant C10,594,561550,211
Events in quadrant D5,188,897692,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230090
B0214620
C0371557
D0210420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81124645.719921%
B81123123.846154%
C8112237429.265286%
D81122753.390039%

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 8112 8112 409 409 5.04% 5.04%
B 8112 8112 170 170 2.10% 2.10%
C 8111 8111 2043 2043 25.19% 25.19%
D 8112 8112 239 239 2.95% 2.95%

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 1194881 5581.3 859 837 213.9
A 3 63 555004 2590.33 859 837 213.9
A 12 80 244088 1137.02 859 837 213.9
B 10 254 498408 2688.04 862 831 185.1
B 10 28 431547 2326.84 862 831 185.1
B 4 81 431418 2326.14 862 831 185.1
C 15 224 4411881 21641.33 734 727 203.8
C 1 241 2029120 9951.39 734 727 203.8
C 1 3 382587 1873.42 734 727 203.8
D 7 96 479589 2000.87 844 806 239.3
D 7 70 420741 1754.94 844 806 239.3
D 2 153 247023 1028.96 844 806 239.3

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