ASTROSAT CZTI

Data Quality Report

Orbit 57340

Creation date: 2026-05-04T08:26:55.369072
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_57340cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57340cztM0_level2_quad_clean.evt
Size (bytes)627,238,080109,296,000
Size598.2 MB 104.2 MB
Events in quadrant A5,213,678698,221
Events in quadrant B4,350,359760,578
Events in quadrant C5,834,164642,315
Events in quadrant D7,146,649604,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218741
B0191581
C0235661
D0273011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86881261.450276%
B86891772.037058%
C86893103.567729%
D86885215.996777%

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 9003 8964 49 49 0.54% 0.55%
B 9004 8965 34 34 0.38% 0.38%
C 9004 8965 222 222 2.47% 2.48%
D 9003 8964 389 389 4.32% 4.34%

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 1425122 6035.28 959 934 236.0
A 4 3 21804 88.44 959 934 236.0
A 8 4 19907 80.4 959 934 236.0
B 0 213 165020 805.57 949 913 203.7
B 5 185 78875 382.7 949 913 203.7
B 7 252 76367 370.39 949 913 203.7
C 15 224 1684050 6832.83 916 905 246.3
C 14 254 161225 650.83 916 905 246.3
C 6 223 156718 632.53 916 905 246.3
D 3 224 2018084 7906.32 907 864 255.1
D 3 12 442685 1731.68 907 864 255.1
D 8 240 424044 1658.62 907 864 255.1

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