ASTROSAT CZTI

Data Quality Report

Orbit 56697

Creation date: 2026-03-22T02:09:01.494830
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_56697cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56697cztM0_level2_quad_clean.evt
Size (bytes)452,738,88083,401,920
Size431.8 MB 79.5 MB
Events in quadrant A3,533,808558,755
Events in quadrant B3,648,424593,740
Events in quadrant C5,238,730462,822
Events in quadrant D3,871,768491,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149731
B0153601
C0200931
D0158921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59922634.389186%
B59923045.073431%
C599294415.754339%
D59922944.906542%

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 7087 5993 200 200 2.82% 3.34%
B 7087 5993 190 190 2.68% 3.17%
C 7087 5993 769 769 10.85% 12.83%
D 7087 5993 284 284 4.01% 4.74%

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 536936 3450.08 622 606 155.5
A 4 249 193415 1240.29 622 606 155.5
A 8 26 152618 977.86 622 606 155.5
B 4 236 892022 6792.94 618 595 131.2
B 0 63 100883 764.22 618 595 131.2
B 10 16 76096 575.34 618 595 131.2
C 15 230 1459381 9558.74 554 547 152.6
C 6 223 746669 4888.82 554 547 152.6
C 13 3 471754 3087.5 554 547 152.6
D 6 239 744860 4480.42 587 559 166.1
D 10 199 326450 1961.74 587 559 166.1
D 2 249 251687 1511.7 587 559 166.1

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