ASTROSAT CZTI

Data Quality Report

Orbit 57318

Creation date: 2026-05-02T20:05:20.050520
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_57318cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57318cztM0_level2_quad_clean.evt
Size (bytes)415,175,04088,349,760
Size395.9 MB 84.3 MB
Events in quadrant A3,420,803578,538
Events in quadrant B3,105,656618,260
Events in quadrant C4,062,583536,575
Events in quadrant D4,308,482519,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144793
B0134531
C0164651
D0169751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60551312.163501%
B60551312.163501%
C60553004.954583%
D60562143.533686%

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 7045 6055 49 49 0.70% 0.81%
B 7045 6055 47 47 0.67% 0.78%
C 7045 6056 250 250 3.55% 4.13%
D 7046 6056 174 174 2.47% 2.87%

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 0 12 743723 4611.4 656 640 161.1
A 3 14 57759 354.47 656 640 161.1
A 10 251 30606 185.96 656 640 161.1
B 7 252 134551 970.14 642 620 138.1
B 5 185 129798 935.71 642 620 138.1
B 0 171 64722 464.33 642 620 138.1
C 15 224 1410229 8308.61 621 615 169.7
C 14 254 76794 449.02 621 615 169.7
C 14 96 68473 399.97 621 615 169.7
D 3 224 1072585 5983.47 629 600 179.2
D 2 249 500788 2791.88 629 600 179.2
D 3 12 71149 393.78 629 600 179.2

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