ASTROSAT CZTI

Data Quality Report

Orbit 20220302_A10_094T38_9000004988_level2

Creation date: 2026-01-01T17:54:42.860451
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_094T38_9000004988cztM0_level2.fits modeM0/AS1A10_094T38_9000004988cztM0_level2_quad_clean.evt
Size (bytes)33,117,12022,939,200
Size31.6 MB 21.9 MB
Events in quadrant A200,580117,117
Events in quadrant B188,988109,753
Events in quadrant C196,232108,682
Events in quadrant D157,70898,787

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075460
B088470
C078570
D0136970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A366960.163532%
B36691504.088307%
C3669280.763151%
D366945112.292178%

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 4981 3669 0 0 0.00% 0.00%
B 4981 3669 0 0 0.00% 0.00%
C 4981 3669 0 0 0.00% 0.00%
D 4981 3663 0 0 0.00% 0.00%

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 29 172 8.23 52 49 15.0
A 0 30 172 8.23 52 49 15.0
A 9 19 166 7.82 52 49 15.0
B 2 9 150 8.62 50 48 11.8
B 5 128 142 7.95 50 48 11.8
B 5 232 135 7.35 50 48 11.8
C 1 81 171 8.27 51 48 14.9
C 1 80 156 7.26 51 48 14.9
C 3 187 154 7.13 51 48 14.9
D 6 83 123 6.02 44 40 13.8
D 6 192 118 5.66 44 40 13.8
D 6 67 118 5.66 44 40 13.8

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