ASTROSAT CZTI

Data Quality Report

Orbit 56437

Creation date: 2026-03-04T14:18:52.253780
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_56437cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56437cztM0_level2_quad_clean.evt
Size (bytes)735,517,44098,596,800
Size701.4 MB 94.0 MB
Events in quadrant A6,516,150627,738
Events in quadrant B7,383,714631,602
Events in quadrant C8,212,979554,087
Events in quadrant D4,524,249643,139

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246196
B0272262
C0295752
D0187292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7598119715.754146%
B7599166821.950257%
C7599180023.687327%
D75992513.303066%

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 9087 7598 996 996 10.96% 13.11%
B 9089 7600 1013 1013 11.15% 13.33%
C 9089 7600 1499 1499 16.49% 19.72%
D 9089 7599 109 109 1.20% 1.43%

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 2155749 10972.88 800 781 196.4
A 8 249 464630 2361.87 800 781 196.4
A 12 194 293096 1488.44 800 781 196.4
B 4 206 3857552 23543.27 765 737 163.8
B 0 231 165659 1006.74 765 737 163.8
B 10 247 77482 468.48 765 737 163.8
C 12 254 4392768 21601.97 749 741 203.3
C 12 252 368977 1811.15 749 741 203.3
C 1 16 288798 1416.79 749 741 203.3
D 11 176 448786 1951.44 829 792 229.6
D 2 249 324848 1411.57 829 792 229.6
D 8 240 96860 418.47 829 792 229.6

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