ASTROSAT CZTI

Data Quality Report

Orbit 21891

Creation date: 2024-06-27T18:33:33.547891
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/AS1A07_041T01_9000003234_21891cztM0_level2.evt modeM0/AS1A07_041T01_9000003234_21891cztM0_level2_quad_clean.evt
Size (bytes)463,890,24075,677,760
Size442.4 MB 72.2 MB
Events in quadrant A3,240,502452,351
Events in quadrant B3,437,739463,775
Events in quadrant C3,232,111453,206
Events in quadrant D3,666,026437,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144321
B0147861
C0142601
D0158081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69461231.770803%
B69471251.799338%
C69471452.087232%
D69471742.504678%

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 7226 6946 15 15 0.21% 0.22%
B 7227 6947 2 2 0.03% 0.03%
C 7227 6947 0 0 0.00% 0.00%
D 7227 6947 79 79 1.09% 1.14%

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 5 16 65161 383.09 819 799 168.0
A 4 2 12938 72.25 819 799 168.0
A 13 254 12371 68.88 819 799 168.0
B 0 197 114792 716.03 821 799 159.2
B 0 190 29595 180.88 821 799 159.2
B 0 230 25252 153.6 821 799 159.2
C 14 238 122275 651.4 790 795 186.5
C 8 128 10586 52.5 790 795 186.5
C 10 22 8778 42.81 790 795 186.5
D 1 52 350265 1810.76 794 768 193.0
D 2 136 126019 648.93 794 768 193.0
D 12 227 108267 556.96 794 768 193.0

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