ASTROSAT CZTI

Data Quality Report

Orbit 04056

Creation date: 2024-06-27T14:36:50.901845
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_241T04_9000000518_04056cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04056cztM0_level2_quad_clean.evt
Size (bytes)471,991,68083,946,240
Size450.1 MB 80.1 MB
Events in quadrant A3,333,174515,702
Events in quadrant B3,577,257518,452
Events in quadrant C3,237,849513,285
Events in quadrant D3,655,815492,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148473
B0155182
C0148022
D0162322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7213370.512963%
B7213941.303203%
C7213420.582282%
D7213791.095245%

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 7678 7214 0 0 0.00% 0.00%
B 7678 7214 21 21 0.27% 0.29%
C 7678 7214 0 0 0.00% 0.00%
D 7678 7214 24 24 0.31% 0.33%

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 8 15 91754 528.96 834 815 171.9
A 14 111 19674 109.7 834 815 171.9
A 0 226 8943 47.28 834 815 171.9
B 14 167 189518 1149.43 847 828 164.2
B 15 204 32175 190.95 847 828 164.2
B 5 184 22850 134.15 847 828 164.2
C 9 144 11387 54.81 820 820 192.8
C 8 128 7067 32.4 820 820 192.8
C 13 61 6696 30.48 820 820 192.8
D 10 246 346772 1733.32 814 790 199.6
D 13 239 154399 769.56 814 790 199.6
D 2 14 29777 145.22 814 790 199.6

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