ASTROSAT CZTI

Data Quality Report

Orbit 58478

Creation date: 2026-07-19T23:17:51.624086
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_044T04_9000006592_58478cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58478cztM0_level2_quad_clean.evt
Size (bytes)2,489,480,640416,626,560
Size2.3 GB 397.3 MB
Events in quadrant A19,594,0322,772,533
Events in quadrant B27,984,5832,625,846
Events in quadrant C22,391,6742,584,936
Events in quadrant D19,831,7732,538,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0792106
B01039763
C0882573
D0802723

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06160
B06160
C06160
D06160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3042116955.571809%
B30421560318.418198%
C3042126828.816278%
D3042212023.951088%

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 31966 30424 1188 1188 3.72% 3.90%
B 31965 30422 3736 3736 11.69% 12.28%
C 31966 30424 2258 2258 7.06% 7.42%
D 31967 30425 963 963 3.01% 3.17%

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 7 64 2943548 3585.31 3314 3230 820.1
A 10 17 1683753 2049.17 3314 3230 820.1
A 10 251 534751 648.12 3314 3230 820.1
B 2 249 9700744 15038.03 3011 2892 644.9
B 5 172 4989474 7732.47 3011 2892 644.9
B 10 247 339879 522.55 3011 2892 644.9
C 15 147 5284888 6118.95 3169 3141 863.2
C 5 10 1846995 2136.12 3169 3141 863.2
C 15 1 593680 684.15 3169 3141 863.2
D 8 240 3227939 3513.32 3233 3086 917.9
D 2 153 2688957 2926.12 3233 3086 917.9
D 3 12 373859 403.94 3233 3086 917.9

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