ASTROSAT CZTI

Data Quality Report

Orbit 01262

Creation date: 2024-06-27T14:10:00.553749
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/AS1G04_011T02_9000000226_01262cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01262cztM0_level2_quad_clean.evt
Size (bytes)1,250,593,920106,061,760
Size1.2 GB 101.1 MB
Events in quadrant A9,176,806691,252
Events in quadrant B9,416,122694,965
Events in quadrant C8,592,995689,981
Events in quadrant D10,228,405650,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322392
B0329041
C0304661
D0353971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69682283.272101%
B69681041.492537%
C6968741.061998%
D69684506.458094%

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 7422 6967 621 621 8.37% 8.91%
B 7422 6967 563 563 7.59% 8.08%
C 7422 6967 357 357 4.81% 5.12%
D 7422 6967 1183 1183 15.94% 16.98%

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 4 32 673683 1261.56 2193 2200 532.3
A 8 14 77378 141.24 2193 2200 532.3
A 11 79 9353 13.44 2193 2200 532.3
B 8 4 322431 597.59 2266 2271 535.8
B 12 52 119451 218.72 2266 2271 535.8
B 15 22 108341 197.98 2266 2271 535.8
C 15 241 318687 541.77 2089 2160 584.2
C 4 252 46280 75.52 2089 2160 584.2
C 3 79 36884 59.43 2089 2160 584.2
D 13 169 1873626 3015.96 2002 2077 620.5
D 10 84 457887 734.53 2002 2077 620.5
D 12 22 285159 456.18 2002 2077 620.5

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