ASTROSAT CZTI

Data Quality Report

Orbit 03946

Creation date: 2024-06-27T14:35:33.411699
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_172T01_9000000502_03946cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03946cztM0_level2_quad_clean.evt
Size (bytes)2,311,490,880373,317,120
Size2.2 GB 356.0 MB
Events in quadrant A17,661,3872,249,219
Events in quadrant B16,870,6082,263,402
Events in quadrant C15,024,9782,250,071
Events in quadrant D18,116,1692,174,147

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06960
B06960
C06960
D06960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0764247
B0729546
C0705366
D07929312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A344978782.545149%
B344974371.266777%
C344972580.747891%
D344958072.339469%

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 38030 34505 250 250 0.66% 0.72%
B 38030 34505 15 15 0.04% 0.04%
C 38030 34505 7 7 0.02% 0.02%
D 38030 34504 415 415 1.09% 1.20%

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 0 118 1216979 1523.41 3914 3821 796.3
A 0 50 523526 652.61 3914 3821 796.3
A 8 15 294424 364.92 3914 3821 796.3
B 15 204 700996 913.91 3965 3870 762.8
B 14 167 214136 275.65 3965 3870 762.8
B 3 0 174811 224.1 3965 3870 762.8
C 14 234 87360 94.69 3788 3800 882.5
C 10 65 44404 46.01 3788 3800 882.5
C 8 128 42448 43.8 3788 3800 882.5
D 2 232 1528718 1693.53 3760 3646 900.5
D 12 227 389571 428.55 3760 3646 900.5
D 13 239 364292 400.48 3760 3646 900.5

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