ASTROSAT CZTI

Data Quality Report

Orbit 37381

Creation date: 2024-06-27T21:39:15.496918
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_048T01_9000005318_37381cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37381cztM0_level2_quad_clean.evt
Size (bytes)581,512,32085,893,120
Size554.6 MB 81.9 MB
Events in quadrant A3,088,829558,267
Events in quadrant B4,183,087558,318
Events in quadrant C3,065,303566,939
Events in quadrant D6,875,632505,822

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01292113
B01631716
C01275813
D02452919

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5886280.475705%
B58884758.067255%
C5885480.815633%
D58895809.848871%

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 7207 5891 12 12 0.17% 0.20%
B 7207 5893 323 323 4.48% 5.48%
C 7207 5891 40 40 0.56% 0.68%
D 7207 5893 615 615 8.53% 10.44%

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 304292 2248.53 670 656 135.0
A 9 143 114102 840.11 670 656 135.0
A 13 248 35029 254.54 670 656 135.0
B 5 255 1266126 10057.78 646 629 125.8
B 5 172 196223 1554.52 646 629 125.8
B 0 190 56879 447.06 646 629 125.8
C 15 214 249737 1640.7 650 654 151.8
C 14 254 126414 828.38 650 654 151.8
C 0 10 75376 492.19 650 654 151.8
D 12 235 3058098 19669.35 634 617 155.4
D 10 253 529896 3404.95 634 617 155.4
D 12 227 433820 2786.88 634 617 155.4

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter