ASTROSAT CZTI

Data Quality Report

Orbit 31467

Creation date: 2024-06-27T20:28:52.873959
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/AS1T04_029T01_9000004582_31467cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31467cztM0_level2_quad_clean.evt
Size (bytes)528,448,32096,252,480
Size504.0 MB 91.8 MB
Events in quadrant A3,166,141638,280
Events in quadrant B5,172,471653,120
Events in quadrant C3,524,564601,800
Events in quadrant D3,714,374582,299

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132712
B0194772
C0143362
D0151152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6295200.317712%
B62951191.890389%
C62952213.510723%
D62951021.620334%

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 7536 6295 0 0 0.00% 0.00%
B 7536 6296 2 2 0.03% 0.03%
C 7536 6296 83 83 1.10% 1.32%
D 7536 6296 48 48 0.64% 0.76%

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 10303 58.46 821 808 162.4
A 3 137 8022 44.42 821 808 162.4
A 0 226 6830 37.08 821 808 162.4
B 6 159 1839825 11921.52 817 798 154.3
B 0 190 92192 592.46 817 798 154.3
B 4 80 33385 211.25 817 798 154.3
C 0 10 327640 1789.86 776 783 182.6
C 14 238 127089 691.65 776 783 182.6
C 10 22 19805 104.16 776 783 182.6
D 8 195 562982 3104.45 776 758 181.1
D 12 218 137579 755.49 776 758 181.1
D 12 79 24038 128.55 776 758 181.1

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