ASTROSAT CZTI

Data Quality Report

Orbit 17138

Creation date: 2024-06-27T17:32:39.152252
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/AS1A05_056T01_9000002540_17138cztM0_level2.evt modeM0/AS1A05_056T01_9000002540_17138cztM0_level2_quad_clean.evt
Size (bytes)577,630,08061,525,440
Size550.9 MB 58.7 MB
Events in quadrant A2,403,327396,185
Events in quadrant B2,447,961414,413
Events in quadrant C6,911,287359,005
Events in quadrant D5,403,487352,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100681
B0101611
C0239831
D0192761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4840110.227273%
B4840200.413223%
C4840104321.549587%
D4840108222.355372%

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 4840 4840 0 0 0.00% 0.00%
B 4840 4840 0 0 0.00% 0.00%
C 4840 4840 139 139 2.87% 2.87%
D 4840 4840 983 983 20.31% 20.31%

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 12 189 32643 257.11 617 605 124.6
A 0 226 5227 37.09 617 605 124.6
A 3 137 4456 30.91 617 605 124.6
B 12 111 14112 113.33 626 610 119.1
B 11 111 12451 99.39 626 610 119.1
B 14 111 10808 85.6 626 610 119.1
C 3 233 4523349 33400.27 577 583 135.4
C 14 238 88082 646.17 577 583 135.4
C 7 247 38595 280.72 577 583 135.4
D 13 232 2318048 16601.48 573 557 139.6
D 5 222 585952 4193.51 573 557 139.6
D 13 249 180531 1289.25 573 557 139.6

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