ASTROSAT CZTI

Data Quality Report

Orbit 57290

Creation date: 2026-04-30T22:42:04.240177
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_049T03_9000006570_57290cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57290cztM0_level2_quad_clean.evt
Size (bytes)362,197,44087,039,360
Size345.4 MB 83.0 MB
Events in quadrant A2,892,523575,764
Events in quadrant B3,116,707612,818
Events in quadrant C3,774,972534,179
Events in quadrant D3,170,031506,111

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124301
B0131542
C0152581
D0136661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5819330.567108%
B5819771.323251%
C58191502.577763%
D58191202.062210%

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 6969 5820 7 7 0.10% 0.12%
B 6969 5820 30 30 0.43% 0.52%
C 6969 5820 146 146 2.09% 2.51%
D 6969 5820 97 97 1.39% 1.67%

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 8 4 348007 2246.94 631 615 154.6
A 13 248 16547 103.05 631 615 154.6
A 5 241 14362 88.92 631 615 154.6
B 5 185 217505 1638.54 620 598 132.4
B 7 0 198940 1498.3 620 598 132.4
B 7 252 47778 356.4 620 598 132.4
C 15 224 1079438 6597.47 597 591 163.5
C 6 223 100328 609.92 597 591 163.5
C 14 254 75711 459.38 597 591 163.5
D 3 224 249401 1472.89 598 571 168.9
D 3 12 193775 1143.63 598 571 168.9
D 8 240 94750 557.47 598 571 168.9

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