ASTROSAT CZTI

Data Quality Report

Orbit 20210826_A10_094T30_9000004666_level2

Creation date: 2021-08-27T15:44:00.496939
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/AS1A10_094T30_9000004666cztM0_level2_bc.evt modeM0/AS1A10_094T30_9000004666cztM0_level2_quad_clean.evt
Size (bytes)209,352,96066,640,320
Size199.7 MB 63.6 MB
Events in quadrant A954,607443,772
Events in quadrant B2,326,951435,972
Events in quadrant C1,300,904425,757
Events in quadrant D1,470,147422,177

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085430
B0135170
C0100750
D0102250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4120270.655340%
B41201944.708738%
C41201012.451456%
D4120611.480583%

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 5350 4119 0 0 0.00% 0.00%
B 5350 4119 3 3 0.06% 0.07%
C 5350 4120 1 1 0.02% 0.02%
D 5349 4118 1 1 0.02% 0.02%

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 13 254 7877 143.43 242 239 53.3
A 14 238 7174 130.23 242 239 53.3
A 13 6 5331 95.62 242 239 53.3
B 6 159 1070078 22759.8 237 232 47.0
B 5 172 139546 2963.75 237 232 47.0
B 10 245 108878 2311.32 237 232 47.0
C 3 233 280320 4944.77 230 231 56.6
C 0 10 122481 2158.24 230 231 56.6
C 2 114 7974 136.7 230 231 56.6
D 12 33 181097 3174.72 239 232 57.0
D 8 195 135893 2381.26 239 232 57.0
D 13 249 99215 1737.45 239 232 57.0

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