ASTROSAT CZTI

Data Quality Report

Orbit 56451

Creation date: 2026-03-05T12:33:27.695423
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_083T05_9000006554_56451cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56451cztM0_level2_quad_clean.evt
Size (bytes)774,308,16088,678,080
Size738.4 MB 84.6 MB
Events in quadrant A6,820,399567,016
Events in quadrant B8,034,732558,613
Events in quadrant C4,320,343606,893
Events in quadrant D8,956,694474,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249592
B0285322
C0176852
D0314033

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6853105515.394718%
B6853173025.244419%
C68533254.742449%
D6852151222.066550%

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 7653 6853 979 979 12.79% 14.29%
B 7653 6853 1402 1402 18.32% 20.46%
C 7652 6852 225 225 2.94% 3.28%
D 7652 6852 1667 1667 21.79% 24.33%

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 3 2027671 11670.31 704 684 173.7
A 7 64 1117200 6428.31 704 684 173.7
A 12 194 273966 1573.41 704 684 173.7
B 5 172 4346518 29948.28 673 647 145.1
B 4 206 620187 4269.38 673 647 145.1
B 10 247 182681 1254.43 673 647 145.1
C 12 254 722164 3651.97 723 717 197.5
C 6 223 330274 1668.22 723 717 197.5
C 1 16 219897 1109.49 723 717 197.5
D 5 113 3390225 18022.05 672 643 188.1
D 8 129 1364280 7250.31 672 643 188.1
D 2 249 718143 3814.87 672 643 188.1

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