ASTROSAT CZTI

Data Quality Report

Orbit 57341

Creation date: 2026-05-04T09:48:52.678799
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_57341cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57341cztM0_level2_quad_clean.evt
Size (bytes)545,356,800111,052,800
Size520.1 MB 105.9 MB
Events in quadrant A3,787,232733,318
Events in quadrant B3,650,891791,120
Events in quadrant C5,511,275671,839
Events in quadrant D6,631,485622,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170950
B0166670
C0218950
D0251790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7812530.678443%
B7812891.139273%
C78133664.684500%
D78135326.809164%

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 7812 7812 39 39 0.50% 0.50%
B 7812 7812 32 32 0.41% 0.41%
C 7813 7813 268 268 3.43% 3.43%
D 7813 7813 493 493 6.31% 6.31%

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 517255 2501.95 834 812 206.4
A 13 248 16453 75.77 834 812 206.4
A 4 3 16354 75.29 834 812 206.4
B 4 171 91437 515.6 829 796 175.8
B 0 213 61029 342.62 829 796 175.8
B 7 252 43737 244.26 829 796 175.8
C 15 224 2067965 9555.92 798 791 216.3
C 14 254 118994 546.42 798 791 216.3
C 12 252 87602 401.3 798 791 216.3
D 3 224 1588704 7238.32 784 748 219.4
D 2 249 601591 2738.8 784 748 219.4
D 8 240 535209 2436.21 784 748 219.4

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