ASTROSAT CZTI

Data Quality Report

Orbit 12925

Creation date: 2024-06-27T16:34:01.462243
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_116T01_9000001896_12925cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12925cztM0_level2_quad_clean.evt
Size (bytes)532,848,96099,040,320
Size508.2 MB 94.5 MB
Events in quadrant A3,883,731664,826
Events in quadrant B4,885,911599,182
Events in quadrant C3,163,097676,023
Events in quadrant D3,787,458629,764

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159232
B0185701
C0134091
D0151481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61501632.650407%
B615099116.113821%
C61501051.707317%
D61503054.959350%

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 7451 6152 24 24 0.32% 0.39%
B 7451 6152 453 453 6.08% 7.36%
C 7451 6152 1 1 0.01% 0.02%
D 7451 6152 185 185 2.48% 3.01%

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 1 162 181594 1117.65 826 810 161.8
A 12 189 117296 720.14 826 810 161.8
A 1 178 94097 576.72 826 810 161.8
B 4 239 1814009 13158.71 749 731 137.8
B 3 64 84498 607.89 749 731 137.8
B 0 187 33516 237.92 749 731 137.8
C 14 234 12470 64.76 804 810 180.1
C 4 112 11952 61.88 804 810 180.1
C 13 61 5992 28.78 804 810 180.1
D 13 122 486283 2612.16 792 772 185.9
D 8 195 170062 910.82 792 772 185.9
D 1 52 63823 339.23 792 772 185.9

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