ASTROSAT CZTI

Data Quality Report

Orbit 29884

Creation date: 2024-06-27T20:08:43.509240
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/AS1A10_102T12_9000004284_29884cztM0_level2.evt modeM0/AS1A10_102T12_9000004284_29884cztM0_level2_quad_clean.evt
Size (bytes)647,784,00096,350,400
Size617.8 MB 91.9 MB
Events in quadrant A3,780,083601,016
Events in quadrant B5,344,702623,512
Events in quadrant C6,311,077598,602
Events in quadrant D3,703,665601,220

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156921
B0213242
C0238361
D0153741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70932353.313126%
B7092831.170333%
C70922793.934010%
D7092360.507614%

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 7733 7094 167 167 2.16% 2.35%
B 7732 7093 3 3 0.04% 0.04%
C 7732 7093 73 73 0.94% 1.03%
D 7732 7093 7 7 0.09% 0.10%

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 15 174 490562 2921.15 835 816 167.7
A 1 113 51931 304.88 835 816 167.7
A 8 192 16935 96.14 835 816 167.7
B 6 159 2009155 12261.09 841 819 163.8
B 0 229 22764 133.98 841 819 163.8
B 12 111 20713 121.45 841 819 163.8
C 3 233 2788061 14510.14 812 816 192.1
C 10 22 217344 1127.22 812 816 192.1
C 14 238 130106 673.07 812 816 192.1
D 8 195 438480 2235.5 825 806 195.8
D 13 104 39551 197.9 825 806 195.8
D 2 250 37968 189.81 825 806 195.8

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