ASTROSAT CZTI

Data Quality Report

Orbit 56604

Creation date: 2026-03-15T20:24:24.309449
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_56604cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56604cztM0_level2_quad_clean.evt
Size (bytes)390,248,64086,967,360
Size372.2 MB 82.9 MB
Events in quadrant A2,848,550569,141
Events in quadrant B2,960,039612,038
Events in quadrant C3,044,814543,056
Events in quadrant D5,119,006484,570

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130561
B0131531
C0135961
D0194201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6080801.315789%
B6081891.463575%
C6081831.364907%
D60815018.238777%

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 6959 6079 35 35 0.50% 0.58%
B 6960 6080 28 28 0.40% 0.46%
C 6960 6080 43 43 0.62% 0.71%
D 6960 6080 516 516 7.41% 8.49%

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 13 248 136296 842.42 645 628 161.0
A 8 249 109857 678.25 645 628 161.0
A 4 95 33090 201.57 645 628 161.0
B 5 236 103579 749.75 638 616 137.3
B 10 246 86793 627.52 638 616 137.3
B 10 247 63596 458.61 638 616 137.3
C 12 252 203767 1175.54 622 616 172.8
C 12 249 98124 564.24 622 616 172.8
C 15 193 92291 530.48 622 616 172.8
D 10 199 915826 5331.81 605 577 171.7
D 2 249 635642 3699.59 605 577 171.7
D 6 239 252514 1467.66 605 577 171.7

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