ASTROSAT CZTI

Data Quality Report

Orbit 06805

Creation date: 2024-06-27T15:11:52.885353
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_086T02_9000000936_06805cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06805cztM0_level2_quad_clean.evt
Size (bytes)512,573,76092,877,120
Size488.8 MB 88.6 MB
Events in quadrant A3,676,629582,974
Events in quadrant B3,574,186593,398
Events in quadrant C3,522,615579,047
Events in quadrant D4,257,550552,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158233
B0154032
C0154492
D0174662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72521201.654716%
B7252951.309983%
C7252250.344732%
D72521602.206288%

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 9307 7254 27 27 0.29% 0.37%
B 9307 7254 2 2 0.02% 0.03%
C 9307 7254 1 1 0.01% 0.01%
D 9307 7254 59 59 0.63% 0.81%

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 13 251 114450 628.9 883 863 180.6
A 8 15 107209 588.81 883 863 180.6
A 13 248 43156 234.17 883 863 180.6
B 4 81 36596 207.86 893 872 171.9
B 0 228 30596 172.95 893 872 171.9
B 12 111 17107 94.47 893 872 171.9
C 9 247 147779 735.0 857 860 199.9
C 12 16 28517 138.36 857 860 199.9
C 13 61 6751 29.47 857 860 199.9
D 8 195 509576 2445.61 844 817 208.0
D 2 216 249067 1193.34 844 817 208.0
D 14 34 139612 667.19 844 817 208.0

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