ASTROSAT CZTI

Data Quality Report

Orbit 56075

Creation date: 2026-02-09T18:28:09.688095
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_083T03_9000006548_56075cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56075cztM0_level2_quad_clean.evt
Size (bytes)508,567,680107,688,960
Size485.0 MB 102.7 MB
Events in quadrant A4,634,609691,757
Events in quadrant B3,846,509767,633
Events in quadrant C4,085,551670,337
Events in quadrant D5,657,560592,495

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197000
B0170381
C0179060
D0226180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77353354.330963%
B7735580.749838%
C77351291.667744%
D77356127.912088%

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 7735 7735 268 268 3.46% 3.46%
B 7735 7735 36 36 0.47% 0.47%
C 7735 7735 102 102 1.32% 1.32%
D 7735 7735 535 535 6.92% 6.92%

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 15 32 1101986 5630.78 792 771 195.6
A 0 8 224137 1142.13 792 771 195.6
A 3 94 55896 281.87 792 771 195.6
B 0 171 119352 696.98 802 775 170.1
B 10 247 112103 654.37 802 775 170.1
B 7 252 82058 477.77 802 775 170.1
C 15 230 376788 1774.09 777 769 212.0
C 12 252 262439 1234.58 777 769 212.0
C 15 147 127671 598.73 777 769 212.0
D 11 129 924198 4434.1 739 707 208.3
D 2 120 589131 2825.29 739 707 208.3
D 3 12 305386 1462.9 739 707 208.3

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