ASTROSAT CZTI

Data Quality Report

Orbit 52473

Creation date: 2025-06-26T23:54:23.139090
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/AS1A13_037T01_9000006476_52473cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52473cztM0_level2_quad_clean.evt
Size (bytes)914,215,68090,771,840
Size871.9 MB 86.6 MB
Events in quadrant A3,811,895711,230
Events in quadrant B5,224,781762,456
Events in quadrant C5,959,294659,918
Events in quadrant D18,250,76378,389

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166130
B0206840
C0230610
D0594390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7654370.483407%
B76531842.404286%
C76543965.173765%
D76547654100.000000%

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 7654 7654 27 27 0.35% 0.35%
B 7653 7653 97 97 1.27% 1.27%
C 7654 7654 363 363 4.74% 4.74%
D 7653 7653 6643 6643 86.80% 86.80%

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 8 249 171616 848.41 814 793 201.3
A 4 61 132187 652.58 814 793 201.3
A 4 3 59546 291.8 814 793 201.3
B 10 254 1083391 6242.9 801 770 173.4
B 4 171 281646 1619.66 801 770 173.4
B 10 44 142083 814.88 801 770 173.4
C 15 224 1530472 7290.28 769 764 209.8
C 15 248 556697 2649.46 769 764 209.8
C 13 3 200122 950.1 769 764 209.8
D 15 93 17152515 504749.37 111 106 34.0
D 6 42 316343 9306.01 111 106 34.0
D 2 153 142973 4204.19 111 106 34.0

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