ASTROSAT CZTI

Data Quality Report

Orbit 18891

Creation date: 2024-06-27T17:56:10.892441
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/AS1A06_003T07_9000002818_18891cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18891cztM0_level2_quad_clean.evt
Size (bytes)605,617,92091,065,600
Size577.6 MB 86.8 MB
Events in quadrant A4,192,863583,934
Events in quadrant B6,540,848570,355
Events in quadrant C3,476,380564,255
Events in quadrant D3,662,814557,762

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166102
B0239292
C0144582
D0153613

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69072763.995946%
B6907128618.618793%
C69071632.359925%
D69061351.954822%

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 7912 6908 88 88 1.11% 1.27%
B 7912 6908 659 659 8.33% 9.54%
C 7912 6908 0 0 0.00% 0.00%
D 7911 6907 29 29 0.37% 0.42%

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 6 16 749159 4213.5 888 871 177.6
A 8 205 17550 93.92 888 871 177.6
A 13 254 8667 43.9 888 871 177.6
B 3 112 2960286 19900.27 806 787 148.7
B 5 128 127444 851.67 806 787 148.7
B 0 189 112340 750.11 806 787 148.7
C 14 238 131284 668.6 841 843 195.1
C 3 233 62861 317.88 841 843 195.1
C 13 61 5916 26.0 841 843 195.1
D 14 34 141944 684.31 860 835 206.2
D 1 52 140005 674.91 860 835 206.2
D 9 1 45871 218.4 860 835 206.2

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