ASTROSAT CZTI

Data Quality Report

Orbit 31478

Creation date: 2024-06-27T20:29:02.926085
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_028T01_9000004584_31478cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31478cztM0_level2_quad_clean.evt
Size (bytes)298,540,80039,450,240
Size284.7 MB 37.6 MB
Events in quadrant A1,424,027276,335
Events in quadrant B3,341,166221,586
Events in quadrant C1,492,783266,357
Events in quadrant D2,593,809231,288

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0637
B06511
C06610
D0657

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06580798
B0145042789
C06887863
D0105391010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B084
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2784120.431034%
B272875127.529326%
C2786521.866475%
D277934612.450522%

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 7726 2829 0 0 0.00% 0.00%
B 7725 2737 453 453 5.86% 16.55%
C 7725 2825 6 6 0.08% 0.21%
D 7725 2826 292 292 3.78% 10.33%

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 0 13 9225 117.75 365 358 75.3
A 13 254 4971 61.26 365 358 75.3
A 3 137 3882 46.8 365 358 75.3
B 12 1 1459026 24399.49 297 288 59.8
B 6 159 641932 10732.42 297 288 59.8
B 4 80 38094 632.36 297 288 59.8
C 14 238 54900 658.18 344 345 82.9
C 3 233 43221 517.28 344 345 82.9
C 0 10 36616 437.59 344 345 82.9
D 12 218 781457 9751.57 328 318 80.1
D 8 195 200605 2500.34 328 318 80.1
D 13 249 190841 2378.45 328 318 80.1

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