ASTROSAT CZTI

Data Quality Report

Orbit 50869

Creation date: 2025-02-22T17:47:54.596004
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/AS1C07_001T01_9000006450_50869cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50869cztM0_level2_quad_clean.evt
Size (bytes)578,741,76085,893,120
Size551.9 MB 81.9 MB
Events in quadrant A6,968,471544,760
Events in quadrant B5,430,489569,294
Events in quadrant C4,410,472546,709
Events in quadrant D4,148,233520,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250301
B0201651
C0171771
D0163751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A600971011.815610%
B600986414.378432%
C60103004.991681%
D60102133.544093%

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 7099 6009 642 642 9.04% 10.68%
B 7099 6009 667 667 9.40% 11.10%
C 7100 6010 225 225 3.17% 3.74%
D 7100 6010 185 185 2.61% 3.08%

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 4 4 3064138 19307.19 634 618 158.7
A 8 234 274115 1723.66 634 618 158.7
A 4 3 186598 1172.1 634 618 158.7
B 4 206 2358168 18086.54 614 594 130.3
B 8 128 153305 1171.55 614 594 130.3
B 0 213 112323 857.15 614 594 130.3
C 1 29 615127 3637.77 620 615 168.9
C 15 231 302942 1789.71 620 615 168.9
C 15 229 250110 1476.95 620 615 168.9
D 2 249 250293 1433.92 624 600 174.1
D 15 108 226886 1299.5 624 600 174.1
D 8 176 209899 1201.95 624 600 174.1

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