ASTROSAT CZTI

Data Quality Report

Orbit 14796

Creation date: 2024-06-27T16:59:47.712282
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/AS1A04_022T02_9000002184_14796cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14796cztM0_level2_quad_clean.evt
Size (bytes)555,661,44082,630,080
Size529.9 MB 78.8 MB
Events in quadrant A3,474,690513,166
Events in quadrant B3,608,030511,049
Events in quadrant C5,521,008489,450
Events in quadrant D3,741,936492,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149533
B0152312
C0214892
D0161432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7120911.278090%
B71201071.502809%
C71203294.620787%
D7120771.081461%

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 7606 7122 1 1 0.01% 0.01%
B 7606 7122 9 9 0.12% 0.13%
C 7606 7122 176 176 2.31% 2.47%
D 7606 7122 12 12 0.16% 0.17%

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 11 29 66791 374.3 871 851 176.2
A 12 189 58171 325.37 871 851 176.2
A 0 226 7942 40.25 871 851 176.2
B 0 219 34524 205.38 865 843 164.0
B 3 209 34424 204.77 865 843 164.0
B 0 229 32426 192.58 865 843 164.0
C 4 254 1213819 6356.59 824 828 190.8
C 3 233 1061785 5559.87 824 828 190.8
C 3 232 11470 55.77 824 828 190.8
D 15 0 409863 1970.76 844 816 207.6
D 10 70 75748 361.02 844 816 207.6
D 2 234 29033 135.95 844 816 207.6

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