ASTROSAT CZTI

Data Quality Report

Orbit 31463

Creation date: 2024-06-27T20:28:49.936535
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/AS1T04_029T01_9000004582_31463cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31463cztM0_level2_quad_clean.evt
Size (bytes)589,498,56099,089,280
Size562.2 MB 94.5 MB
Events in quadrant A3,442,173641,521
Events in quadrant B5,981,345638,321
Events in quadrant C3,865,759617,656
Events in quadrant D4,081,375607,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148592
B0228942
C0160082
D0169632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71321141.598430%
B71332823.953456%
C71322743.841840%
D71321101.542344%

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 8562 7132 0 0 0.00% 0.00%
B 8563 7133 13 13 0.15% 0.18%
C 8562 7132 15 15 0.18% 0.21%
D 8562 7132 14 14 0.16% 0.20%

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 13 254 12218 62.87 892 872 180.5
A 3 137 9661 48.7 892 872 180.5
A 0 226 7296 35.6 892 872 180.5
B 6 159 1986014 11698.01 874 852 169.7
B 12 1 381860 2245.18 874 852 169.7
B 0 190 91164 532.18 874 852 169.7
C 0 10 200785 983.94 853 860 203.2
C 3 233 144494 706.9 853 860 203.2
C 14 238 137098 670.5 853 860 203.2
D 8 195 636571 3088.67 867 844 205.8
D 12 218 68874 330.52 867 844 205.8
D 12 79 36744 174.42 867 844 205.8

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