ASTROSAT CZTI

Data Quality Report

Orbit 04926

Creation date: 2024-06-27T14:48:56.832586
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/AS1G05_118T01_9000000622_04926cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04926cztM0_level2_quad_clean.evt
Size (bytes)828,567,36091,653,120
Size790.2 MB 87.4 MB
Events in quadrant A5,541,061568,157
Events in quadrant B4,307,011582,292
Events in quadrant C6,070,109552,991
Events in quadrant D8,645,376526,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221434
B0184523
C0236323
D0311923

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78386247.961215%
B78382663.393723%
C78386908.803266%
D7839158620.232172%

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 8033 7840 372 372 4.63% 4.74%
B 8033 7842 108 108 1.34% 1.38%
C 8033 7840 598 598 7.44% 7.63%
D 8034 7842 1441 1441 17.94% 18.38%

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 0 31 2196742 12418.4 862 841 176.8
A 15 31 16117 86.39 862 841 176.8
A 12 194 8734 44.64 862 841 176.8
B 8 3 378733 2211.13 891 867 170.9
B 10 16 315021 1838.31 891 867 170.9
B 15 54 45145 259.1 891 867 170.9
C 9 247 2715496 13967.1 844 848 194.4
C 1 16 20649 101.88 844 848 194.4
C 8 128 16795 82.05 844 848 194.4
D 1 7 4080313 20741.23 798 770 196.7
D 2 33 728060 3697.69 798 770 196.7
D 2 136 176552 893.71 798 770 196.7

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