ASTROSAT CZTI

Data Quality Report

Orbit 55243

Creation date: 2025-12-14T05:40:22.270339
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_009T01_9000006534_55243cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55243cztM0_level2_quad_clean.evt
Size (bytes)502,297,92093,853,440
Size479.0 MB 89.5 MB
Events in quadrant A4,234,329597,506
Events in quadrant B3,637,738667,719
Events in quadrant C5,018,411581,992
Events in quadrant D5,198,156540,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172792
B0156072
C0194242
D0200412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65034056.227895%
B65031692.598801%
C65034256.535445%
D65034036.197140%

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 7638 6504 304 304 3.98% 4.67%
B 7638 6504 148 148 1.94% 2.28%
C 7638 6504 418 418 5.47% 6.43%
D 7638 6504 466 466 6.10% 7.16%

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 1207783 7473.64 659 642 161.5
A 0 8 153569 946.8 659 642 161.5
A 12 194 148862 917.66 659 642 161.5
B 2 249 451333 3158.04 674 650 142.7
B 5 185 251813 1759.96 674 650 142.7
B 10 245 192960 1347.56 674 650 142.7
C 12 254 1158438 6439.67 657 655 179.8
C 13 3 458339 2545.67 657 655 179.8
C 12 249 178913 991.48 657 655 179.8
D 11 129 945694 5128.79 651 622 184.3
D 8 160 893087 4843.3 651 622 184.3
D 5 38 494497 2680.2 651 622 184.3

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