ASTROSAT CZTI

Data Quality Report

Orbit 17962

Creation date: 2024-06-27T17:43:11.454708
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_019T01_9000002672_17962cztM0_level2.evt modeM0/AS1A05_019T01_9000002672_17962cztM0_level2_quad_clean.evt
Size (bytes)451,362,24097,519,680
Size430.5 MB 93.0 MB
Events in quadrant A3,337,413649,940
Events in quadrant B3,578,296647,945
Events in quadrant C3,226,229614,303
Events in quadrant D3,116,361618,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137441
B0145171
C0130721
D0130371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60501171.933884%
B60511462.412824%
C6050951.570248%
D6050550.909091%

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 7350 6051 35 35 0.48% 0.58%
B 7351 6052 62 62 0.84% 1.02%
C 7350 6051 0 0 0.00% 0.00%
D 7350 6051 3 3 0.04% 0.05%

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 14 237 210179 1345.67 784 770 155.6
A 15 174 113005 721.22 784 770 155.6
A 0 226 6942 39.66 784 770 155.6
B 7 220 392643 2717.81 774 758 144.2
B 5 172 38406 261.1 774 758 144.2
B 4 171 35778 242.87 774 758 144.2
C 3 233 193996 1121.65 745 750 172.3
C 14 238 116796 673.56 745 750 172.3
C 13 61 5442 27.23 745 750 172.3
D 7 238 62381 331.62 768 746 185.9
D 5 222 55910 296.81 768 746 185.9
D 10 70 29905 156.89 768 746 185.9

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