ASTROSAT CZTI

Data Quality Report

Orbit 08027

Creation date: 2024-06-27T15:27:02.451786
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/AS1G06_154T02_9000001102_08027cztM0_level2.evt modeM0/AS1G06_154T02_9000001102_08027cztM0_level2_quad_clean.evt
Size (bytes)389,436,48064,987,200
Size371.4 MB 62.0 MB
Events in quadrant A2,538,281396,325
Events in quadrant B2,562,041406,070
Events in quadrant C2,535,152404,274
Events in quadrant D3,779,240371,138

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114551
B0114211
C0114201
D0152194

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55661432.569170%
B55661592.856630%
C55661122.012217%
D55644688.411215%

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 5771 5568 2 2 0.03% 0.04%
B 5771 5568 0 0 0.00% 0.00%
C 5771 5568 0 0 0.00% 0.00%
D 5771 5567 310 310 5.37% 5.57%

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 13 251 16329 114.69 654 638 136.8
A 0 226 6191 40.59 654 638 136.8
A 12 194 5950 38.83 654 638 136.8
B 12 111 14740 108.43 657 638 130.1
B 11 111 11985 87.25 657 638 130.1
B 14 111 9218 65.97 657 638 130.1
C 8 128 14990 94.89 642 645 151.2
C 8 112 6064 35.84 642 645 151.2
C 8 144 5687 33.35 642 645 151.2
D 13 169 1222443 8069.18 626 610 151.4
D 1 52 148173 974.53 626 610 151.4
D 2 14 24137 155.38 626 610 151.4

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