ASTROSAT CZTI

Data Quality Report

Orbit 24830

Creation date: 2024-06-27T19:10:22.298625
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/AS1A08_003T02_9000003630_24830cztM0_level2.evt modeM0/AS1A08_003T02_9000003630_24830cztM0_level2_quad_clean.evt
Size (bytes)541,163,520100,967,040
Size516.1 MB 96.3 MB
Events in quadrant A3,498,571657,822
Events in quadrant B3,664,848665,991
Events in quadrant C3,610,590625,159
Events in quadrant D5,119,535600,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150361
B0155091
C0152842
D0200491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7294951.302440%
B72951151.576422%
C72941782.440362%
D72943695.058953%

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 7674 7295 0 0 0.00% 0.00%
B 7675 7296 0 0 0.00% 0.00%
C 7674 7295 27 27 0.35% 0.37%
D 7674 7295 227 227 2.96% 3.11%

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 10467 51.64 907 888 185.5
A 3 137 8771 42.5 907 888 185.5
A 0 226 7943 38.03 907 888 185.5
B 0 189 126594 717.91 894 870 175.1
B 12 111 22233 121.99 894 870 175.1
B 11 111 19799 108.09 894 870 175.1
C 14 238 137349 670.14 862 866 203.7
C 2 16 97356 473.77 862 866 203.7
C 7 247 16901 78.73 862 866 203.7
D 5 222 957393 4498.72 865 839 212.6
D 8 195 826614 3883.66 865 839 212.6
D 1 52 52703 243.92 865 839 212.6

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