ASTROSAT CZTI

Data Quality Report

Orbit 55049

Creation date: 2025-12-01T19:47:08.789872
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_025T01_9000006530_55049cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55049cztM0_level2_quad_clean.evt
Size (bytes)129,951,36021,850,560
Size123.9 MB 20.8 MB
Events in quadrant A1,105,241144,554
Events in quadrant B1,178,565145,230
Events in quadrant C1,154,162154,988
Events in quadrant D1,197,45056,716

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03888533858
B03306327740
C03069725334
D07418569790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286244
B0291226
C0292230
D0289242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208
B02111
C02114
D02114

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2373200.842815%
B2442502.047502%
C262850.190259%
D126113010.309278%

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 21221 3673 6 6 0.03% 0.16%
B 21191 3865 19 19 0.09% 0.49%
C 21188 4069 1 1 0.00% 0.02%
D 20956 1988 76 76 0.36% 3.82%

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 0 8 47803 747.52 253 246 63.6
A 10 253 42268 660.52 253 246 63.6
A 3 95 12795 197.25 253 246 63.6
B 4 81 116060 2039.49 255 246 56.8
B 5 185 37591 657.65 255 246 56.8
B 12 111 6813 115.65 255 246 56.8
C 12 252 15822 200.14 275 271 77.7
C 13 3 15491 195.88 275 271 77.7
C 1 16 13818 174.35 275 271 77.7
D 11 129 405519 10872.26 125 120 37.3
D 15 94 175146 4693.96 125 120 37.3
D 10 181 24011 640.72 125 120 37.3

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