ASTROSAT CZTI

Data Quality Report

Orbit 33181

Creation date: 2024-06-27T20:45:48.233740
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/AS1A11_080T02_9000004768_33181cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33181cztM0_level2_quad_clean.evt
Size (bytes)586,468,80076,227,840
Size559.3 MB 72.7 MB
Events in quadrant A2,585,759493,337
Events in quadrant B3,878,848487,957
Events in quadrant C2,993,911493,194
Events in quadrant D7,920,510438,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113672
B0153051
C0123661
D0275271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A565230.053079%
B56522895.113234%
C5652691.220807%
D5652122721.709130%

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 7145 5653 0 0 0.00% 0.00%
B 7145 5653 166 166 2.32% 2.94%
C 7145 5653 49 49 0.69% 0.87%
D 7145 5653 1155 1155 16.17% 20.43%

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 13 254 10822 75.63 666 650 134.5
A 13 6 8433 57.87 666 650 134.5
A 3 137 6372 42.54 666 650 134.5
B 5 172 574194 4620.19 647 629 124.1
B 0 219 459620 3697.27 647 629 124.1
B 0 190 84982 679.48 647 629 124.1
C 14 67 249233 1664.63 643 649 149.3
C 0 10 207677 1386.35 643 649 149.3
C 12 251 7846 48.19 643 649 149.3
D 8 195 2100637 14793.86 588 574 142.0
D 7 223 1688085 11887.64 588 574 142.0
D 12 218 969074 6822.58 588 574 142.0

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