ASTROSAT CZTI

Data Quality Report

Orbit 06834

Creation date: 2024-06-27T15:12:10.858283
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/AS1A02_174T04_9000000938_06834cztM0_level2.evt modeM0/AS1A02_174T04_9000000938_06834cztM0_level2_quad_clean.evt
Size (bytes)515,666,88086,532,480
Size491.8 MB 82.5 MB
Events in quadrant A3,317,180539,639
Events in quadrant B3,440,573549,784
Events in quadrant C3,521,626543,404
Events in quadrant D4,873,986511,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145953
B0148902
C0149452
D0193852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6831791.156492%
B68311281.873811%
C68311161.698141%
D68314887.143903%

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 8866 6833 4 4 0.05% 0.06%
B 8866 6833 3 3 0.03% 0.04%
C 8866 6833 30 30 0.34% 0.44%
D 8866 6833 288 288 3.25% 4.21%

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 8 15 76614 442.77 829 812 171.2
A 0 23 41747 239.11 829 812 171.2
A 0 226 11053 59.82 829 812 171.2
B 0 228 44629 273.61 836 815 160.1
B 0 214 41971 257.01 836 815 160.1
B 0 219 36465 222.62 836 815 160.1
C 12 16 177693 935.92 812 814 189.0
C 9 247 154275 812.01 812 814 189.0
C 12 4 9908 48.12 812 814 189.0
D 2 33 867930 4462.93 793 769 194.3
D 2 216 397342 2041.0 793 769 194.3
D 8 195 285320 1464.47 793 769 194.3

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