ASTROSAT CZTI

Data Quality Report

Orbit 55863

Creation date: 2026-01-25T03:23:14.693832
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_030T02_9000006544_55863cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55863cztM0_level2_quad_clean.evt
Size (bytes)464,486,40085,276,800
Size443.0 MB 81.3 MB
Events in quadrant A5,931,308492,793
Events in quadrant B3,209,725620,147
Events in quadrant C4,808,052502,360
Events in quadrant D2,753,807526,365

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219651
B0140861
C0189821
D0132411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6309102716.278333%
B63091111.759391%
C630964910.286892%
D6310771.220285%

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 7199 6310 910 910 12.64% 14.42%
B 7199 6310 47 47 0.65% 0.74%
C 7199 6310 598 598 8.31% 9.48%
D 7200 6311 23 23 0.32% 0.36%

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 2997648 20098.95 592 578 149.1
A 8 192 148701 993.34 592 578 149.1
A 7 64 138978 928.14 592 578 149.1
B 5 172 243837 1784.99 633 610 136.3
B 5 236 178430 1304.98 633 610 136.3
B 7 252 85916 626.04 633 610 136.3
C 15 199 1446146 8739.86 599 593 165.4
C 15 147 450239 2718.57 599 593 165.4
C 6 223 176989 1066.5 599 593 165.4
D 11 129 79252 442.17 629 601 177.9
D 2 153 56887 316.44 629 601 177.9
D 5 173 46495 258.01 629 601 177.9

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