ASTROSAT CZTI

Data Quality Report

Orbit 37574

Creation date: 2024-06-27T21:41:43.934284
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/AS1T05_053T01_9000005338_37574cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37574cztM0_level2_quad_clean.evt
Size (bytes)430,470,72076,541,760
Size410.5 MB 73.0 MB
Events in quadrant A3,340,224485,110
Events in quadrant B3,191,187487,766
Events in quadrant C2,814,730490,127
Events in quadrant D3,309,095461,898

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133333
B0130952
C0118932
D0137332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5618721.281595%
B56181061.886792%
C5618330.587398%
D56181342.385190%

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 7321 5619 44 44 0.60% 0.78%
B 7321 5619 61 61 0.83% 1.09%
C 7321 5619 27 27 0.37% 0.48%
D 7321 5619 137 137 1.87% 2.44%

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 10 83 343870 2639.79 642 632 130.0
A 15 222 268128 2057.27 642 632 130.0
A 13 248 113877 870.95 642 632 130.0
B 5 255 195787 1602.17 638 622 121.8
B 5 172 178266 1458.34 638 622 121.8
B 5 200 83945 684.02 638 622 121.8
C 15 214 241966 1656.7 619 624 145.7
C 0 10 111186 758.96 619 624 145.7
C 3 233 19197 127.49 619 624 145.7
D 2 250 280595 1848.3 615 597 151.5
D 1 47 214052 1409.04 615 597 151.5
D 10 199 92688 607.9 615 597 151.5

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