ASTROSAT CZTI

Data Quality Report

Orbit 56206

Creation date: 2026-02-17T01:44:47.810146
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_56206cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56206cztM0_level2_quad_clean.evt
Size (bytes)771,667,20090,097,920
Size735.9 MB 85.9 MB
Events in quadrant A11,526,063464,984
Events in quadrant B4,137,444703,248
Events in quadrant C5,679,669534,473
Events in quadrant D6,675,619533,922

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391640
B0173390
C0223190
D0247634

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7053251735.686942%
B70542133.019563%
C7054113216.047633%
D705387912.462782%

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 7053 7053 2408 2408 34.14% 34.14%
B 7054 7054 120 120 1.70% 1.70%
C 7054 7054 842 842 11.94% 11.94%
D 7053 7053 869 869 12.32% 12.32%

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 12 115 5222868 33501.7 629 613 155.9
A 15 32 1364925 8752.31 629 613 155.9
A 8 176 997683 6396.38 629 613 155.9
B 4 171 382326 2454.14 731 706 155.5
B 5 185 346825 2225.83 731 706 155.5
B 7 252 147337 942.96 731 706 155.5
C 12 254 2623172 14605.56 649 644 179.6
C 12 252 194860 1081.64 649 644 179.6
C 9 237 110331 610.88 649 644 179.6
D 3 12 758658 3907.42 676 643 194.0
D 11 129 705343 3632.59 676 643 194.0
D 2 249 587187 3023.52 676 643 194.0

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