ASTROSAT CZTI

Data Quality Report

Orbit 56708

Creation date: 2026-03-22T19:16:44.402636
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_083T06_9000006558_56708cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56708cztM0_level2_quad_clean.evt
Size (bytes)592,804,80092,629,440
Size565.3 MB 88.3 MB
Events in quadrant A4,984,977607,036
Events in quadrant B7,848,640580,673
Events in quadrant C5,192,250558,168
Events in quadrant D3,408,259600,685

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193491
B0277741
C0200071
D0147691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65646269.536868%
B6564143021.785497%
C656575611.515613%
D65651261.919269%

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 7514 6564 450 450 5.99% 6.86%
B 7514 6565 1136 1136 15.12% 17.30%
C 7515 6566 599 599 7.97% 9.12%
D 7515 6565 57 57 0.76% 0.87%

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 3 62 1987188 11382.73 691 673 174.5
A 10 251 101487 577.66 691 673 174.5
A 4 95 58933 333.83 691 673 174.5
B 5 185 4810010 33164.75 676 652 145.0
B 0 63 133759 917.89 676 652 145.0
B 10 247 56230 383.26 676 652 145.0
C 13 3 1526546 8445.48 647 640 180.7
C 9 38 491196 2715.1 647 640 180.7
C 15 230 378187 2089.62 647 640 180.7
D 2 249 300514 1490.03 704 672 201.2
D 6 239 110509 545.82 704 672 201.2
D 5 173 55470 272.31 704 672 201.2

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