ASTROSAT CZTI

Data Quality Report

Orbit 03851

Creation date: 2024-06-27T14:34:22.435604
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/AS1G05_189T01_9000000492_03851cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03851cztM0_level2_quad_clean.evt
Size (bytes)409,129,92064,198,080
Size390.2 MB 61.2 MB
Events in quadrant A3,153,641383,031
Events in quadrant B3,094,130387,105
Events in quadrant C2,841,446374,200
Events in quadrant D2,878,400365,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132842
B0130041
C0127671
D0130281

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210651.046699%
B6210761.223833%
C6210300.483092%
D6210330.531401%

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 7425 6210 1 1 0.01% 0.02%
B 7425 6210 0 0 0.00% 0.00%
C 7425 6210 0 0 0.00% 0.00%
D 7425 6211 7 7 0.09% 0.11%

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 15 234 126671 826.4 755 741 152.4
A 5 143 50681 327.72 755 741 152.4
A 8 15 39172 252.2 755 741 152.4
B 15 204 121497 814.22 760 742 148.3
B 4 81 24063 157.25 760 742 148.3
B 12 111 13100 83.32 760 742 148.3
C 9 247 13408 75.23 719 722 168.6
C 10 65 7556 40.53 719 722 168.6
C 13 61 6090 31.83 719 722 168.6
D 13 223 58286 324.57 721 702 177.4
D 13 248 40867 226.39 721 702 177.4
D 2 32 26607 146.01 721 702 177.4

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
Veto Counter