ASTROSAT CZTI

Data Quality Report

Orbit 56186

Creation date: 2026-02-15T16:30:41.587347
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_083T04_9000006550_56186cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56186cztM0_level2_quad_clean.evt
Size (bytes)452,557,44099,803,520
Size431.6 MB 95.2 MB
Events in quadrant A5,171,744644,121
Events in quadrant B3,430,201712,252
Events in quadrant C4,179,111616,340
Events in quadrant D3,463,501594,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197952
B0146542
C0168562
D0147512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65283495.346201%
B65281802.757353%
C65283575.468750%
D65281682.573529%

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 7648 6528 172 172 2.25% 2.63%
B 7648 6529 28 28 0.37% 0.43%
C 7648 6529 195 195 2.55% 2.99%
D 7648 6528 54 54 0.71% 0.83%

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 0 212 672608 3711.87 729 711 181.0
A 7 64 481938 2658.52 729 711 181.0
A 8 176 293222 1615.96 729 711 181.0
B 5 185 296662 1914.97 727 701 154.6
B 10 247 67048 429.29 727 701 154.6
B 4 171 34412 218.12 727 701 154.6
C 12 252 898974 4671.81 708 703 192.3
C 12 254 387483 2011.6 708 703 192.3
C 6 223 36609 186.74 708 703 192.3
D 8 129 120177 585.26 720 686 204.2
D 12 6 92406 449.24 720 686 204.2
D 2 249 79707 387.04 720 686 204.2

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