ASTROSAT CZTI

Data Quality Report

Orbit 54157

Creation date: 2025-10-02T03:57:26.934594
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_012T01_9000006512_54157cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54157cztM0_level2_quad_clean.evt
Size (bytes)533,131,200102,922,560
Size508.4 MB 98.2 MB
Events in quadrant A5,782,055620,792
Events in quadrant B4,316,999714,556
Events in quadrant C4,234,732641,544
Events in quadrant D4,795,723597,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228312
B0183722
C0180772
D0201222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77947679.840903%
B77951822.334830%
C77951431.834509%
D77952543.258499%

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 8094 8070 564 564 6.97% 6.99%
B 8095 8071 66 66 0.82% 0.82%
C 8095 8071 92 92 1.14% 1.14%
D 8095 8071 208 208 2.57% 2.58%

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 7 29 1969818 10040.34 785 764 196.1
A 3 14 294879 1499.71 785 764 196.1
A 0 8 213906 1086.83 785 764 196.1
B 5 185 182889 1048.87 823 793 173.6
B 5 236 165029 946.0 823 793 173.6
B 4 171 154324 884.33 823 793 173.6
C 12 250 477246 2112.67 815 805 225.5
C 9 38 119585 526.7 815 805 225.5
C 14 254 104548 460.02 815 805 225.5
D 8 176 1214562 5338.99 803 766 227.3
D 3 12 113544 496.06 803 766 227.3
D 3 144 91745 400.18 803 766 227.3

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