ASTROSAT CZTI

Data Quality Report

Orbit 57856

Creation date: 2026-06-08T00:11:08.806502
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_125T11_9000006582_57856cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57856cztM0_level2_quad_clean.evt
Size (bytes)482,002,56085,536,000
Size459.7 MB 81.6 MB
Events in quadrant A2,865,476594,685
Events in quadrant B2,699,844629,980
Events in quadrant C8,202,226410,367
Events in quadrant D3,601,391529,301

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127031
B0125721
C0285781
D0150851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6085230.377979%
B6085290.476582%
C6085185530.484799%
D6085510.838127%

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 7130 6086 13 13 0.18% 0.21%
B 7130 6086 9 9 0.13% 0.15%
C 7130 6086 1736 1736 24.35% 28.52%
D 7130 6086 57 57 0.80% 0.94%

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 64 222653 1390.35 645 629 159.7
A 4 3 66136 410.22 645 629 159.7
A 3 128 44123 272.37 645 629 159.7
B 5 185 50476 367.96 636 614 135.5
B 0 63 34601 250.81 636 614 135.5
B 7 252 21732 155.84 636 614 135.5
C 15 224 5987456 41713.38 523 518 143.5
C 6 223 44704 307.86 523 518 143.5
C 12 250 32152 220.41 523 518 143.5
D 12 110 846938 4841.36 617 589 174.8
D 5 32 47437 267.98 617 589 174.8
D 5 173 41870 236.14 617 589 174.8

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