ASTROSAT CZTI

Data Quality Report

Orbit 40914

Creation date: 2024-06-27T22:22:09.592909
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/AS1T05_101T01_9000005578_40914cztM0_level2.fits modeM0/AS1T05_101T01_9000005578_40914cztM0_level2_quad_clean.evt
Size (bytes)350,850,24095,621,760
Size334.6 MB 91.2 MB
Events in quadrant A3,057,749636,600
Events in quadrant B2,789,108652,613
Events in quadrant C2,744,119629,789
Events in quadrant D3,934,019561,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127653
B0127252
C0122132
D0160522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5935100.168492%
B5935390.657119%
C5935270.454928%
D59352654.465038%

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 9010 5937 4 4 0.04% 0.07%
B 9010 5937 22 22 0.24% 0.37%
C 9010 5937 23 23 0.26% 0.39%
D 9010 5937 246 246 2.73% 4.14%

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 10 83 574407 4464.39 625 613 128.5
A 12 189 29501 224.76 625 613 128.5
A 2 79 11395 83.89 625 613 128.5
B 5 255 96923 791.1 624 606 121.8
B 0 245 87463 713.4 624 606 121.8
B 15 35 47047 381.44 624 606 121.8
C 15 214 254793 1800.52 610 613 141.2
C 0 10 89871 632.27 610 613 141.2
C 3 233 8783 57.87 610 613 141.2
D 12 233 762024 5177.2 601 584 147.1
D 2 249 295409 2004.58 601 584 147.1
D 2 120 139894 947.2 601 584 147.1

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