ASTROSAT CZTI

Data Quality Report

Orbit 54028

Creation date: 2025-09-23T11:58:12.894677
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_041T01_9000006510_54028cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54028cztM0_level2_quad_clean.evt
Size (bytes)722,347,200115,680,960
Size688.9 MB 110.3 MB
Events in quadrant A4,145,003793,613
Events in quadrant B4,711,753860,179
Events in quadrant C5,280,144740,578
Events in quadrant D11,935,104511,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188080
B0202540
C0218980
D0415640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85981281.488718%
B85992322.697988%
C85993624.209792%
D8599262130.480288%

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 8598 8598 96 96 1.12% 1.12%
B 8599 8599 123 123 1.43% 1.43%
C 8599 8599 281 281 3.27% 3.27%
D 8599 8599 2450 2450 28.49% 28.49%

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 15 174 370024 1668.47 897 874 221.3
A 4 249 140086 629.21 897 874 221.3
A 7 14 46241 205.05 897 874 221.3
B 5 236 579741 3049.94 899 866 189.8
B 0 213 229073 1202.36 899 866 189.8
B 0 155 127419 666.77 899 866 189.8
C 1 241 529342 2234.58 869 861 236.5
C 13 3 383768 1619.05 869 861 236.5
C 12 249 314093 1324.44 869 861 236.5
D 8 176 6596142 30598.6 756 721 215.5
D 10 172 984973 4566.31 756 721 215.5
D 3 12 512885 2376.12 756 721 215.5

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