ASTROSAT CZTI

Data Quality Report

Orbit 57667

Creation date: 2026-05-26T07:12:11.137447
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_125T09_9000006578_57667cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57667cztM0_level2_quad_clean.evt
Size (bytes)441,377,28099,195,840
Size420.9 MB 94.6 MB
Events in quadrant A2,977,134669,313
Events in quadrant B3,238,404710,913
Events in quadrant C5,717,329570,308
Events in quadrant D3,878,037581,515

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139441
B0145051
C0217261
D0165011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6776410.605077%
B67771341.977276%
C677782012.099749%
D67771962.892135%

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 8836 6777 9 9 0.10% 0.13%
B 8837 6779 52 52 0.59% 0.77%
C 8837 6779 720 720 8.15% 10.62%
D 8837 6779 192 192 2.17% 2.83%

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 7 223 42307 228.16 742 722 182.3
A 10 251 18322 96.56 742 722 182.3
A 7 160 18064 95.15 742 722 182.3
B 10 16 99342 635.46 730 703 155.2
B 5 185 92722 592.82 730 703 155.2
B 5 172 44099 279.57 730 703 155.2
C 15 224 1533701 8354.42 675 667 183.5
C 12 254 938967 5113.36 675 667 183.5
C 12 252 317097 1724.42 675 667 183.5
D 8 240 584072 2899.21 707 675 201.2
D 3 12 123541 610.59 707 675 201.2
D 13 138 106299 524.9 707 675 201.2

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