ASTROSAT CZTI

Data Quality Report

Orbit 53720

Creation date: 2025-09-02T18:45:35.610018
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_022T04_9000006506_53720cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53720cztM0_level2_quad_clean.evt
Size (bytes)853,263,36073,396,800
Size813.7 MB 70.0 MB
Events in quadrant A13,401,984224,028
Events in quadrant B3,026,766636,737
Events in quadrant C6,708,982513,080
Events in quadrant D7,953,817402,984

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0441967
B0138052
C0243992
D0280182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6374435168.261688%
B63741612.525886%
C637485913.476624%
D6374182228.584876%

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 6989 6376 4152 4152 59.41% 65.12%
B 6989 6376 21 21 0.30% 0.33%
C 6989 6376 635 635 9.09% 9.96%
D 6989 6376 1488 1488 21.29% 23.34%

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 3 63 8681283 70100.64 489 476 123.8
A 3 78 2183098 17625.46 489 476 123.8
A 7 206 237232 1911.89 489 476 123.8
B 6 255 111915 783.88 662 637 142.0
B 5 185 106581 746.3 662 637 142.0
B 10 247 26426 181.67 662 637 142.0
C 15 224 2076751 12202.03 618 612 170.1
C 15 158 1361587 7998.82 618 612 170.1
C 13 3 332405 1950.04 618 612 170.1
D 2 172 2917541 18675.2 538 513 156.2
D 1 241 1355341 8673.79 538 513 156.2
D 8 176 670457 4289.07 538 513 156.2

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