ASTROSAT CZTI

Data Quality Report

Orbit 56153

Creation date: 2026-02-14T10:20:05.065189
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_083T04_9000006550_56153cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56153cztM0_level2_quad_clean.evt
Size (bytes)2,469,994,560388,509,120
Size2.3 GB 370.5 MB
Events in quadrant A34,806,0502,171,384
Events in quadrant B15,939,0122,779,424
Events in quadrant C18,305,3892,412,078
Events in quadrant D20,035,4922,311,419

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06160
B06160
C06160
D06160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01246329
B0695794
C0772674
D0809754

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30358704623.209698%
B303597922.608782%
C3035916515.438256%
D303599333.073224%

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 32793 30600 6149 6149 18.75% 20.09%
B 32793 30808 288 288 0.88% 0.93%
C 32793 30809 1371 1371 4.18% 4.45%
D 32793 30809 811 811 2.47% 2.63%

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 9 250 15220994 21542.96 2890 2822 706.4
A 3 14 4450256 6295.82 2890 2822 706.4
A 0 8 1106167 1561.9 2890 2822 706.4
B 5 185 1283647 1901.2 3180 3059 673.6
B 0 153 305303 448.72 3180 3059 673.6
B 4 171 291665 428.47 3180 3059 673.6
C 12 254 4071259 4869.03 3068 3041 835.5
C 6 223 663494 790.46 3068 3041 835.5
C 12 252 587933 700.03 3068 3041 835.5
D 8 240 2577936 2967.75 3087 2947 867.7
D 2 62 1400297 1610.49 3087 2947 867.7
D 2 31 745987 856.38 3087 2947 867.7

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