ASTROSAT CZTI

Data Quality Report

Orbit 29561

Creation date: 2024-06-27T20:05:30.240255
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/AS1C05_019T01_9000004264_29561cztM0_level2.evt modeM0/AS1C05_019T01_9000004264_29561cztM0_level2_quad_clean.evt
Size (bytes)477,786,240108,123,840
Size455.7 MB 103.1 MB
Events in quadrant A3,037,475719,861
Events in quadrant B3,121,671739,238
Events in quadrant C3,352,330665,828
Events in quadrant D4,503,040682,859

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135711
B0137071
C0144091
D0179881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6692510.762104%
B6692660.986252%
C669269310.355649%
D66922854.258816%

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 7347 6693 0 0 0.00% 0.00%
B 7347 6693 0 0 0.00% 0.00%
C 7347 6693 0 0 0.00% 0.00%
D 7347 6693 214 214 2.91% 3.20%

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 12722 75.5 787 771 158.3
A 3 137 7762 44.17 787 771 158.3
A 0 226 6739 37.7 787 771 158.3
B 0 190 31450 206.75 784 765 148.4
B 12 111 18420 118.95 784 765 148.4
B 11 111 16592 106.64 784 765 148.4
C 14 238 299966 1824.67 712 715 164.0
C 14 254 253619 1542.07 712 715 164.0
C 2 114 14502 84.07 712 715 164.0
D 7 238 492705 2779.65 743 721 177.0
D 8 195 423616 2389.3 743 721 177.0
D 12 227 310365 1749.45 743 721 177.0

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