ASTROSAT CZTI

Data Quality Report

Orbit 07427

Creation date: 2024-06-27T15:19:38.142023
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/AS1A02_150T04_9000001022_07427cztM0_level2.evt modeM0/AS1A02_150T04_9000001022_07427cztM0_level2_quad_clean.evt
Size (bytes)477,253,44095,307,840
Size455.1 MB 90.9 MB
Events in quadrant A3,051,164605,959
Events in quadrant B3,233,510621,343
Events in quadrant C3,813,624616,355
Events in quadrant D3,908,067583,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136643
B0140512
C0156332
D0158842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6593300.455028%
B6593360.546034%
C6593330.500531%
D65931592.411649%

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 7619 6595 1 1 0.01% 0.02%
B 7619 6595 2 2 0.03% 0.03%
C 7619 6595 2 2 0.03% 0.03%
D 7619 6595 124 124 1.63% 1.88%

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 15 234 32314 198.85 781 766 158.6
A 0 226 7268 40.98 781 766 158.6
A 12 194 7011 39.36 781 766 158.6
B 10 245 51662 333.68 793 772 152.5
B 0 214 38799 249.34 793 772 152.5
B 4 81 25954 165.11 793 772 152.5
C 9 68 799738 4468.99 771 776 178.8
C 13 61 5914 28.74 771 776 178.8
C 7 87 5161 24.53 771 776 178.8
D 2 16 346245 1843.87 761 738 187.4
D 2 14 305285 1625.28 761 738 187.4
D 7 223 136416 724.07 761 738 187.4

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