ASTROSAT CZTI

Data Quality Report

Orbit 31857

Creation date: 2024-06-27T20:33:33.721578
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_109T01_9000004646_31857cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31857cztM0_level2_quad_clean.evt
Size (bytes)578,476,80081,008,640
Size551.7 MB 77.3 MB
Events in quadrant A3,636,171513,224
Events in quadrant B5,294,888508,597
Events in quadrant C4,411,091485,517
Events in quadrant D3,724,582479,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147132
B0204252
C0172686
D0150392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6678961.437556%
B66791832.739931%
C66783545.300988%
D6678761.138065%

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 8823 6680 0 0 0.00% 0.00%
B 8824 6681 0 0 0.00% 0.00%
C 8823 6680 130 130 1.47% 1.95%
D 8823 6680 9 9 0.10% 0.13%

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 6 59225 314.99 929 914 185.1
A 13 254 10681 52.76 929 914 185.1
A 3 137 8931 43.31 929 914 185.1
B 6 159 1719301 10010.29 905 881 171.7
B 12 111 20953 116.93 905 881 171.7
B 11 111 19395 107.85 905 881 171.7
C 0 10 855389 4267.85 855 860 200.2
C 14 238 144189 715.84 855 860 200.2
C 3 233 42317 207.05 855 860 200.2
D 8 195 164693 793.89 884 865 206.4
D 10 203 100551 483.07 884 865 206.4
D 12 79 41309 195.99 884 865 206.4

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