ASTROSAT CZTI

Data Quality Report

Orbit 55676

Creation date: 2026-01-13T12:54:03.953423
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_021T06_9000006538_55676cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55676cztM0_level2_quad_clean.evt
Size (bytes)380,583,36099,192,960
Size363.0 MB 94.6 MB
Events in quadrant A4,181,952618,590
Events in quadrant B2,892,394692,151
Events in quadrant C3,149,695620,685
Events in quadrant D3,327,022591,767

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173252
B0142172
C0149222
D0151872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68923194.628555%
B6893540.783403%
C6893751.088060%
D6893480.696359%

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 8812 6894 276 276 3.13% 4.00%
B 8813 6895 7 7 0.08% 0.10%
C 8813 6895 37 37 0.42% 0.54%
D 8813 6895 26 26 0.30% 0.38%

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 12 115 910305 5319.32 685 667 171.0
A 15 32 307903 1796.63 685 667 171.0
A 7 243 131520 765.19 685 667 171.0
B 10 247 48756 324.82 691 665 148.1
B 7 252 46788 311.53 691 665 148.1
B 7 0 33340 220.7 691 665 148.1
C 12 252 166984 886.63 681 673 187.6
C 13 3 90702 479.96 681 673 187.6
C 6 223 62856 331.5 681 673 187.6
D 8 245 156451 806.09 676 645 193.3
D 3 12 123485 635.53 676 645 193.3
D 2 249 112699 579.73 676 645 193.3

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