ASTROSAT CZTI

Data Quality Report

Orbit 31524

Creation date: 2024-06-27T20:29:23.006640
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_119T01_9000004590_31524cztM0_level2.evt modeM0/AS1A10_119T01_9000004590_31524cztM0_level2_quad_clean.evt
Size (bytes)1,421,988,480208,362,240
Size1.3 GB 198.7 MB
Events in quadrant A11,352,3221,302,299
Events in quadrant B12,138,5511,353,321
Events in quadrant C8,944,6151,318,137
Events in quadrant D9,593,8481,275,982

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436732
B0476242
C0361152
D0381122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15379172811.236101%
B153796354.129007%
C153805453.543563%
D153805593.634590%

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 15915 15380 1052 1052 6.61% 6.84%
B 15915 15380 46 46 0.29% 0.30%
C 15916 15381 50 50 0.31% 0.33%
D 15916 15381 246 246 1.55% 1.60%

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 4295957 11713.81 1815 1776 366.6
A 13 170 54865 144.82 1815 1776 366.6
A 13 254 28351 72.49 1815 1776 366.6
B 6 159 4102107 11489.35 1860 1815 356.9
B 4 80 353378 985.11 1860 1815 356.9
B 0 190 115145 317.56 1860 1815 356.9
C 3 233 873534 2062.96 1801 1812 422.6
C 0 10 686065 1619.31 1801 1812 422.6
C 14 238 284752 669.59 1801 1812 422.6
D 8 195 915091 2120.11 1820 1775 430.8
D 12 79 762891 1766.81 1820 1775 430.8
D 12 233 463142 1070.99 1820 1775 430.8

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