ASTROSAT CZTI

Data Quality Report

Orbit 26780

Creation date: 2024-06-27T19:32:50.883716
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/AS1A09_079T01_9000003864_26780cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26780cztM0_level2_quad_clean.evt
Size (bytes)181,938,24038,453,760
Size173.5 MB 36.7 MB
Events in quadrant A1,663,373255,546
Events in quadrant B1,061,838267,853
Events in quadrant C1,052,275258,127
Events in quadrant D1,600,340242,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063390
B042690
C042050
D061050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19091316.862232%
B1908743.878407%
C19081005.241090%
D190819710.324948%

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 3069 1910 18 18 0.59% 0.94%
B 3068 1909 6 6 0.20% 0.31%
C 3068 1909 1 1 0.03% 0.05%
D 3068 1909 82 82 2.67% 4.30%

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 13 662446 12428.27 259 253 53.3
A 13 254 2979 51.16 259 253 53.3
A 0 226 2242 37.33 259 253 53.3
B 0 189 54416 1082.24 254 247 50.1
B 12 111 5548 105.91 254 247 50.1
B 11 111 5253 100.01 254 247 50.1
C 14 238 40285 667.38 253 254 60.0
C 2 16 13390 219.0 253 254 60.0
C 15 208 9649 156.63 253 254 60.0
D 1 52 340282 5643.47 250 244 60.3
D 7 80 231804 3843.11 250 244 60.3
D 1 239 51536 851.27 250 244 60.3

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