ASTROSAT CZTI

Data Quality Report

Orbit 54763

Creation date: 2025-11-11T23:09:27.470461
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_103T01_9000006524_54763cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54763cztM0_level2_quad_clean.evt
Size (bytes)621,463,68093,611,520
Size592.7 MB 89.3 MB
Events in quadrant A3,106,993673,045
Events in quadrant B9,011,678521,476
Events in quadrant C3,886,532632,761
Events in quadrant D6,485,407545,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139990688307240139990164045870
B0-1-1
C0-1-1
D0-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139222
B0313182
C0162732
D0238492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66231332.008153%
B6622212232.044699%
C66222583.896104%
D662282712.488674%

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 7763 6624 8 8 0.10% 0.12%
B 7762 6623 1751 1751 22.56% 26.44%
C 7762 6623 133 133 1.71% 2.01%
D 7762 6623 767 767 9.88% 11.58%

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 5 240 44653 235.15 763 745 186.7
A 4 206 29611 154.59 763 745 186.7
A 4 3 24071 124.92 763 745 186.7
B 2 249 5169885 37972.26 632 611 136.1
B 0 213 343279 2517.16 632 611 136.1
B 1 207 238813 1749.78 632 611 136.1
C 13 3 543737 2735.43 727 723 198.5
C 4 5 221881 1114.08 727 723 198.5
C 6 223 154851 776.42 727 723 198.5
D 3 12 2183453 10988.04 701 671 198.7
D 11 129 569557 2863.75 701 671 198.7
D 2 252 486127 2443.77 701 671 198.7

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