ASTROSAT CZTI

Data Quality Report

Orbit 31176

Creation date: 2024-06-27T20:24:18.498060
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/AS1A10_058T02_9000004510_31176cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31176cztM0_level2_quad_clean.evt
Size (bytes)584,792,64086,713,920
Size557.7 MB 82.7 MB
Events in quadrant A3,244,749561,176
Events in quadrant B5,090,753558,030
Events in quadrant C3,416,852529,897
Events in quadrant D5,515,950520,595

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134951
B0198991
C0140372
D0216411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6536560.856793%
B65371081.652134%
C65361241.897185%
D6536901.376989%

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 7586 6537 0 0 0.00% 0.00%
B 7587 6538 4 4 0.05% 0.06%
C 7586 6537 22 22 0.29% 0.34%
D 7586 6537 42 42 0.55% 0.64%

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 13 254 10110 55.37 841 826 167.7
A 3 137 8277 44.44 841 826 167.7
A 0 226 6975 36.67 841 826 167.7
B 6 159 1751813 11035.38 821 800 158.7
B 4 80 49253 305.36 821 800 158.7
B 0 190 44206 273.56 821 800 158.7
C 14 238 131930 707.0 789 793 185.5
C 10 22 108907 582.87 789 793 185.5
C 0 10 71414 380.74 789 793 185.5
D 8 195 2174007 11431.91 803 782 190.1
D 12 233 183916 963.35 803 782 190.1
D 2 250 79410 413.61 803 782 190.1

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