ASTROSAT CZTI

Data Quality Report

Orbit 12682

Creation date: 2024-06-27T16:30:59.577538
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/AS1A04_174T01_9000001876_12682cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12682cztM0_level2_quad_clean.evt
Size (bytes)517,426,56094,498,560
Size493.5 MB 90.1 MB
Events in quadrant A3,153,274631,141
Events in quadrant B5,118,878562,858
Events in quadrant C3,163,160623,822
Events in quadrant D3,786,149582,684

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137042
B0196001
C0138281
D0158951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6612290.438596%
B661276111.509377%
C6612130.196612%
D66121972.979431%

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 7437 6612 1 1 0.01% 0.02%
B 7437 6612 629 629 8.46% 9.51%
C 7437 6612 13 13 0.17% 0.20%
D 7437 6612 175 175 2.35% 2.65%

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 54715 331.97 796 781 162.5
A 9 143 22691 134.86 796 781 162.5
A 8 15 10406 59.24 796 781 162.5
B 4 239 1920270 13624.95 747 733 140.9
B 3 209 107659 758.97 747 733 140.9
B 11 51 38825 270.38 747 733 140.9
C 15 208 140429 779.22 774 782 179.2
C 13 61 5635 27.08 774 782 179.2
C 8 222 3072 12.78 774 782 179.2
D 1 52 742031 3937.42 753 738 188.3
D 10 199 77760 409.11 753 738 188.3
D 8 195 43171 225.39 753 738 188.3

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