ASTROSAT CZTI

Data Quality Report

Orbit 57405

Creation date: 2026-05-08T16:12:09.002418
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_102T01_9000006572_57405cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57405cztM0_level2_quad_clean.evt
Size (bytes)554,693,76093,513,600
Size529.0 MB 89.2 MB
Events in quadrant A4,982,982633,924
Events in quadrant B3,544,299679,168
Events in quadrant C7,444,011490,234
Events in quadrant D4,045,230563,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193261
B0151831
C0267681
D0166881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66521762.645821%
B66521342.014432%
C6652161124.218280%
D66532714.073350%

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 7572 6652 50 50 0.66% 0.75%
B 7572 6653 27 27 0.36% 0.41%
C 7572 6652 1228 1228 16.22% 18.46%
D 7573 6653 194 194 2.56% 2.92%

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 12 2059082 11584.37 720 703 177.7
A 13 248 51390 285.26 720 703 177.7
A 4 3 38345 211.84 720 703 177.7
B 0 216 291478 1927.84 710 683 150.8
B 5 185 270214 1786.87 710 683 150.8
B 0 245 52269 341.99 710 683 150.8
C 15 224 3314784 19290.51 629 623 171.8
C 6 223 1424236 8286.33 629 623 171.8
C 12 252 122539 709.63 629 623 171.8
D 8 240 510420 2557.02 700 669 199.4
D 15 142 266805 1335.0 700 669 199.4
D 3 12 164599 822.31 700 669 199.4

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