ASTROSAT CZTI

Data Quality Report

Orbit 56627

Creation date: 2026-03-17T08:59:48.404277
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_56627cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56627cztM0_level2_quad_clean.evt
Size (bytes)492,989,760117,581,760
Size470.2 MB 112.1 MB
Events in quadrant A4,446,796764,463
Events in quadrant B4,864,180814,251
Events in quadrant C4,017,757727,908
Events in quadrant D4,281,804682,602

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193491
B0205571
C0181032
D0188501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82121842.240623%
B82133674.468526%
C8212911.108134%
D82121031.254262%

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 8907 8213 62 62 0.70% 0.75%
B 8908 8214 128 128 1.44% 1.56%
C 8907 8213 43 43 0.48% 0.52%
D 8907 8213 78 78 0.88% 0.95%

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 273068 1253.88 886 864 217.1
A 4 95 156117 715.16 886 864 217.1
A 0 8 155683 713.16 886 864 217.1
B 8 128 773668 4072.18 882 847 189.8
B 0 231 156495 820.15 882 847 189.8
B 10 247 136824 716.5 882 847 189.8
C 13 3 153387 649.58 867 859 234.8
C 1 16 113307 478.89 867 859 234.8
C 12 252 110372 466.39 867 859 234.8
D 2 249 193444 801.61 858 818 240.3
D 7 96 140266 580.31 858 818 240.3
D 6 239 93357 385.1 858 818 240.3

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