ASTROSAT CZTI

Data Quality Report

Orbit 53858

Creation date: 2025-09-12T11:14:32.465914
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_057T04_9000006508_53858cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53858cztM0_level2_quad_clean.evt
Size (bytes)526,991,04094,305,600
Size502.6 MB 89.9 MB
Events in quadrant A3,455,615640,972
Events in quadrant B3,945,799666,439
Events in quadrant C7,111,646519,108
Events in quadrant D4,480,223566,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146611
B0163021
C0257051
D0178031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6625450.679245%
B66251362.052830%
C6625112817.026415%
D66261882.837308%

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 7610 6626 28 28 0.37% 0.42%
B 7610 6626 69 69 0.91% 1.04%
C 7610 6626 1050 1050 13.80% 15.85%
D 7611 6627 190 190 2.50% 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 8 249 449686 2565.26 706 688 175.0
A 15 174 111999 635.95 706 688 175.0
A 10 253 27142 151.14 706 688 175.0
B 0 213 321489 2162.13 697 673 148.4
B 5 185 320343 2154.41 697 673 148.4
B 5 172 276090 1856.16 697 673 148.4
C 15 224 2948609 16648.06 636 629 177.1
C 1 241 1229024 6937.09 636 629 177.1
C 15 158 159232 895.67 636 629 177.1
D 3 224 437492 2288.32 678 650 190.9
D 15 46 369192 1930.54 678 650 190.9
D 10 199 189705 990.33 678 650 190.9

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