ASTROSAT CZTI

Data Quality Report

Orbit 08259

Creation date: 2024-06-27T15:30:14.786237
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_136T01_9000001148_08259cztM0_level2.evt modeM0/AS1G06_136T01_9000001148_08259cztM0_level2_quad_clean.evt
Size (bytes)165,355,20025,257,600
Size157.7 MB 24.1 MB
Events in quadrant A2,291,947126,413
Events in quadrant B678,698181,163
Events in quadrant C734,279181,516
Events in quadrant D1,202,189167,611

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077772
B029571
C031571
D045801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144267246.601942%
B144290.624133%
C1442241.664355%
D14421429.847434%

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 1442 1442 583 583 40.43% 40.43%
B 1442 1442 0 0 0.00% 0.00%
C 1442 1442 20 20 1.39% 1.39%
D 1442 1442 125 125 8.67% 8.67%

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 0 128 1772262 62087.15 132 129 28.5
A 13 248 9094 314.09 132 129 28.5
A 0 226 1201 37.56 132 129 28.5
B 0 214 5159 140.59 172 168 35.5
B 12 111 3699 99.46 172 168 35.5
B 10 252 3531 94.73 172 168 35.5
C 9 54 85998 2156.65 165 167 39.8
C 13 61 1247 27.14 165 167 39.8
C 12 4 1162 25.0 165 167 39.8
D 1 52 387055 9751.95 160 156 39.7
D 12 233 202499 5100.14 160 156 39.7
D 2 234 4686 114.18 160 156 39.7

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