ASTROSAT CZTI

Data Quality Report

Orbit 56004

Creation date: 2026-02-06T18:11:31.932844
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_066T02_9000006546_56004cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56004cztM0_level2_quad_clean.evt
Size (bytes)521,930,880111,409,920
Size497.8 MB 106.2 MB
Events in quadrant A4,866,459718,632
Events in quadrant B3,961,146771,760
Events in quadrant C4,305,248698,817
Events in quadrant D5,572,726633,951

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200280
B0175692
C0187340
D0221970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79122533.197674%
B79122072.616279%
C7912921.162791%
D79124675.902427%

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 7912 7912 225 225 2.84% 2.84%
B 7912 7912 81 81 1.02% 1.02%
C 7912 7912 120 120 1.52% 1.52%
D 7912 7912 374 374 4.73% 4.73%

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 8 735965 3470.54 855 833 211.8
A 4 249 363057 1710.05 855 833 211.8
A 3 14 169857 797.96 855 833 211.8
B 2 249 256638 1393.36 851 819 183.6
B 0 199 104367 563.99 851 819 183.6
B 0 213 69192 372.4 851 819 183.6
C 13 3 496666 2152.5 841 833 230.4
C 9 38 176187 761.24 841 833 230.4
C 15 199 124422 536.52 841 833 230.4
D 8 240 604993 2629.77 814 778 229.8
D 8 245 465792 2023.91 814 778 229.8
D 2 120 433143 1881.81 814 778 229.8

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