ASTROSAT CZTI

Data Quality Report

Orbit 08462

Creation date: 2024-06-27T15:33:01.393707
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/AS1A03_074T01_9000001192_08462cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08462cztM0_level2_quad_clean.evt
Size (bytes)484,300,80099,247,680
Size461.9 MB 94.6 MB
Events in quadrant A3,400,036612,469
Events in quadrant B3,697,398623,123
Events in quadrant C3,403,859639,678
Events in quadrant D3,659,865612,337

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01526110
B01595618
C01523218
D01614321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7446270.362611%
B7441720.967612%
C7441220.295659%
D7439540.725904%

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 9234 7451 0 0 0.00% 0.00%
B 9234 7451 19 19 0.21% 0.25%
C 9234 7451 0 0 0.00% 0.00%
D 9234 7450 33 33 0.36% 0.44%

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 0 226 8075 39.92 883 863 180.7
A 12 194 7730 38.01 883 863 180.7
A 13 251 6356 30.41 883 863 180.7
B 4 81 111370 643.25 888 866 171.8
B 0 214 89260 514.54 888 866 171.8
B 11 51 27762 156.56 888 866 171.8
C 13 61 6407 27.19 871 871 203.6
C 8 222 4356 17.12 871 871 203.6
C 14 67 2965 10.29 871 871 203.6
D 2 152 149842 721.24 861 840 206.6
D 13 169 80230 384.28 861 840 206.6
D 2 14 62818 300.0 861 840 206.6

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