ASTROSAT CZTI

Data Quality Report

Orbit 54293

Creation date: 2025-10-11T17:57:35.191253
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/AS1A14_126T15_9000006516_54293cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54293cztM0_level2_quad_clean.evt
Size (bytes)582,341,76098,576,640
Size555.4 MB 94.0 MB
Events in quadrant A3,170,148678,929
Events in quadrant B3,691,673722,357
Events in quadrant C3,747,530646,698
Events in quadrant D10,383,543431,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149562
B0162522
C0166252
D03581527

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7252340.468836%
B72521021.406509%
C72531191.640700%
D7248241733.347130%

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 8672 7254 11 11 0.13% 0.15%
B 8672 7254 29 29 0.33% 0.40%
C 8673 7255 104 104 1.20% 1.43%
D 8672 7253 2338 2338 26.96% 32.23%

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 10 253 51565 271.24 761 743 187.4
A 15 174 41795 219.09 761 743 187.4
A 12 17 26048 135.05 761 743 187.4
B 7 0 240827 1481.06 753 725 162.1
B 0 213 110993 680.18 753 725 162.1
B 5 185 96516 590.88 753 725 162.1
C 14 254 565092 2741.15 743 736 205.9
C 12 252 67701 325.26 743 736 205.9
C 15 189 39946 190.45 743 736 205.9
D 8 176 6102894 34576.33 621 594 176.5
D 2 153 1101234 6236.35 621 594 176.5
D 2 172 350158 1980.67 621 594 176.5

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter