ASTROSAT CZTI

Data Quality Report

Orbit 03015

Creation date: 2024-06-27T14:23:30.165592
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/AS1G05_238T02_9000000420_03015cztM0_level2.evt modeM0/AS1G05_238T02_9000000420_03015cztM0_level2_quad_clean.evt
Size (bytes)62,902,08013,170,240
Size60.0 MB 12.6 MB
Events in quadrant A383,22884,125
Events in quadrant B543,15682,187
Events in quadrant C424,16484,092
Events in quadrant D493,59681,414

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184592
B0228692
C0190650
D0209991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0182
D0182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C061
D061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84730.354191%
B846303.546099%
C85150.587544%
D84630.354610%

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 873 869 3 3 0.34% 0.35%
B 873 866 28 28 3.21% 3.23%
C 873 866 4 4 0.46% 0.46%
D 873 867 1 1 0.11% 0.12%

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 14 249 18592 898.38 89 87 20.6
A 0 50 10182 490.09 89 87 20.6
A 13 14 3647 172.83 89 87 20.6
B 6 203 83774 4293.39 91 88 19.5
B 14 167 72834 3732.13 91 88 19.5
B 2 249 16467 840.3 91 88 19.5
C 1 192 44926 1930.58 91 91 23.2
C 6 80 14533 621.87 91 91 23.2
C 14 67 2334 96.58 91 91 23.2
D 13 114 132007 5392.38 90 87 24.5
D 2 209 8613 348.51 90 87 24.5
D 7 80 4656 186.76 90 87 24.5

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
Veto Counter