ASTROSAT CZTI

Data Quality Report

Orbit 08987

Creation date: 2024-06-27T15:39:43.909401
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/AS1A03_025T08_9000001248_08987cztM0_level2.evt modeM0/AS1A03_025T08_9000001248_08987cztM0_level2_quad_clean.evt
Size (bytes)461,350,08062,510,400
Size440.0 MB 59.6 MB
Events in quadrant A3,881,224369,008
Events in quadrant B3,343,671374,800
Events in quadrant C3,064,770363,406
Events in quadrant D3,262,196353,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155613
B0136482
C0128987
D0136536

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6189861.389562%
B6189971.567297%
C6187450.727332%
D61871071.729433%

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 7439 6190 9 9 0.12% 0.15%
B 7439 6189 4 4 0.05% 0.06%
C 7439 6190 0 0 0.00% 0.00%
D 7439 6190 58 58 0.78% 0.94%

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 8 5 720240 4387.58 815 800 164.0
A 15 174 20393 119.49 815 800 164.0
A 0 226 7620 41.59 815 800 164.0
B 10 16 125139 802.3 817 800 155.0
B 0 229 21366 132.7 817 800 155.0
B 12 111 16437 100.9 817 800 155.0
C 9 68 18609 99.03 781 786 180.0
C 13 61 5859 28.19 781 786 180.0
C 2 1 2185 7.77 781 786 180.0
D 1 52 139186 739.95 774 758 187.1
D 13 104 69243 366.08 774 758 187.1
D 2 14 57535 303.49 774 758 187.1

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