ASTROSAT CZTI

Data Quality Report

Orbit 18788

Creation date: 2024-06-27T17:54:43.590231
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/AS1A05_024T01_9000002810_18788cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18788cztM0_level2_quad_clean.evt
Size (bytes)493,738,56071,579,520
Size470.9 MB 68.3 MB
Events in quadrant A3,570,122434,481
Events in quadrant B3,803,085439,413
Events in quadrant C3,675,508419,944
Events in quadrant D3,458,315415,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146012
B0153032
C0150772
D0143832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65651392.117289%
B65651732.635187%
C65651542.345773%
D65651101.675552%

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 7860 6566 11 11 0.14% 0.17%
B 7860 6566 32 32 0.41% 0.49%
C 7860 6566 0 0 0.00% 0.00%
D 7860 6566 10 10 0.13% 0.15%

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 56016 306.24 910 892 180.0
A 13 254 11294 57.79 910 892 180.0
A 0 226 8327 41.31 910 892 180.0
B 7 220 101908 608.24 897 877 166.1
B 12 18 56683 335.97 897 877 166.1
B 0 197 39462 232.29 897 877 166.1
C 3 233 150636 757.11 866 873 197.8
C 14 238 137953 693.0 866 873 197.8
C 9 54 11829 55.39 866 873 197.8
D 1 52 98589 459.58 883 859 212.7
D 2 234 28568 130.3 883 859 212.7
D 7 96 16159 71.95 883 859 212.7

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