ASTROSAT CZTI

Data Quality Report

Orbit 51326

Creation date: 2025-04-02T10:45:02.314298
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_001T03_9000006456_51326cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51326cztM0_level2_quad_clean.evt
Size (bytes)746,628,48091,543,680
Size712.0 MB 87.3 MB
Events in quadrant A6,335,823613,563
Events in quadrant B4,171,192676,774
Events in quadrant C9,872,257459,678
Events in quadrant D6,721,588537,135

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237950
B0172750
C0341300
D0249010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69492183.137142%
B69491982.849331%
C6949216131.098000%
D69506809.784173%

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 6949 6949 163 163 2.35% 2.35%
B 6949 6949 154 154 2.22% 2.22%
C 6949 6949 1960 1960 28.21% 28.21%
D 6950 6950 710 710 10.22% 10.22%

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 3 1904778 10738.19 696 678 177.3
A 4 175 428615 2413.36 696 678 177.3
A 12 250 341060 1919.59 696 678 177.3
B 5 185 444800 2972.24 694 670 149.4
B 10 254 176094 1173.99 694 670 149.4
B 4 81 148568 989.78 694 670 149.4
C 4 12 2887136 17966.77 580 576 160.7
C 15 205 2631851 16377.81 580 576 160.7
C 3 233 531011 3301.58 580 576 160.7
D 11 176 1432577 7931.19 652 630 180.5
D 7 60 507600 2807.98 652 630 180.5
D 8 176 474931 2627.03 652 630 180.5

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