ASTROSAT CZTI

Data Quality Report

Orbit 26147

Creation date: 2024-06-27T19:25:22.728118
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/AS1A09_138T04_9000003776_26147cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26147cztM0_level2_quad_clean.evt
Size (bytes)652,904,64086,405,760
Size622.7 MB 82.4 MB
Events in quadrant A3,664,182539,272
Events in quadrant B3,705,105549,539
Events in quadrant C3,732,935525,003
Events in quadrant D8,158,933476,863

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157210
B0157220
C0157740
D0293030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75491051.390913%
B75491381.828057%
C75481291.709062%
D7549169622.466552%

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 7899 7550 1 1 0.01% 0.01%
B 7899 7549 3 3 0.04% 0.04%
C 7897 7547 4 4 0.05% 0.05%
D 7899 7549 1582 1582 20.03% 20.96%

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 56947 295.61 936 915 189.5
A 13 254 11794 57.4 936 915 189.5
A 3 137 8916 42.21 936 915 189.5
B 0 190 26649 143.48 923 899 179.5
B 12 111 22248 118.96 923 899 179.5
B 11 111 19974 106.29 923 899 179.5
C 14 238 141361 664.57 891 898 211.4
C 3 233 76350 356.99 891 898 211.4
C 13 250 19149 86.35 891 898 211.4
D 1 52 4801316 24695.37 817 800 194.4
D 1 3 203011 1040.24 817 800 194.4
D 2 234 31434 157.59 817 800 194.4

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