ASTROSAT CZTI

Data Quality Report

Orbit 11295

Creation date: 2024-06-27T16:10:54.865976
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/AS1A04_144T01_9000001652_11295cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11295cztM0_level2_quad_clean.evt
Size (bytes)779,641,92096,353,280
Size743.5 MB 91.9 MB
Events in quadrant A7,700,693583,826
Events in quadrant B4,698,753633,257
Events in quadrant C4,018,474620,553
Events in quadrant D6,663,160534,346

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281123
B0191652
C0174942
D0251622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7842162720.747258%
B78425036.414180%
C78423334.246366%
D784289611.425657%

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 8152 7845 1082 1082 13.27% 13.79%
B 8152 7845 169 169 2.07% 2.15%
C 8152 7845 184 184 2.26% 2.35%
D 8152 7844 639 639 7.84% 8.15%

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 4183918 23584.41 862 840 177.4
A 1 162 68321 380.46 862 840 177.4
A 1 178 41484 229.15 862 840 177.4
B 4 239 973831 5433.65 920 899 179.1
B 3 189 55888 307.1 920 899 179.1
B 15 204 47971 262.89 920 899 179.1
C 9 204 535089 2583.57 887 890 206.8
C 8 128 10536 46.65 887 890 206.8
C 14 234 8488 36.75 887 890 206.8
D 1 52 1906468 9575.23 824 799 199.0
D 10 253 661723 3320.88 824 799 199.0
D 8 195 523626 2627.0 824 799 199.0

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