ASTROSAT CZTI

Data Quality Report

Orbit 50847

Creation date: 2025-02-21T17:13:48.924979
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/AS1C07_001T01_9000006450_50847cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50847cztM0_level2_quad_clean.evt
Size (bytes)716,071,680115,416,000
Size682.9 MB 110.1 MB
Events in quadrant A6,382,892742,106
Events in quadrant B5,182,379834,540
Events in quadrant C6,661,400691,414
Events in quadrant D7,635,578647,603

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246281
B0212600
C0257210
D0285190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83264995.993274%
B83261982.378093%
C83267248.695652%
D83268019.620466%

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 8326 8326 519 519 6.23% 6.23%
B 8326 8326 126 126 1.51% 1.51%
C 8326 8326 504 504 6.05% 6.05%
D 8326 8326 642 642 7.71% 7.71%

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 12 80 1223659 5719.95 864 844 213.8
A 3 130 904070 4225.01 864 844 213.8
A 14 254 161372 750.9 864 844 213.8
B 4 206 667288 3554.54 879 845 187.5
B 5 172 397353 2114.81 879 845 187.5
B 7 252 113086 598.65 879 845 187.5
C 5 10 513488 2258.54 835 829 227.0
C 4 210 470587 2069.53 835 829 227.0
C 15 158 467104 2054.19 835 829 227.0
D 10 181 717734 3126.94 825 797 229.3
D 2 249 390708 1700.61 825 797 229.3
D 6 191 362065 1575.68 825 797 229.3

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