ASTROSAT CZTI

Data Quality Report

Orbit 20795

Creation date: 2024-06-27T18:19:40.521731
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_013T01_9000003070_20795cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20795cztM0_level2_quad_clean.evt
Size (bytes)2,491,519,680437,768,640
Size2.3 GB 417.5 MB
Events in quadrant A15,930,6782,802,727
Events in quadrant B17,652,5842,767,735
Events in quadrant C16,119,5692,698,114
Events in quadrant D23,425,8202,620,985

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07000
B07000
C07000
D07000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0701376
B0749266
C0703776
D0923257

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A345031360.394169%
B345034091.185404%
C345032670.773846%
D345038952.593977%

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 38398 34505 0 0 0.00% 0.00%
B 38398 34504 133 133 0.35% 0.39%
C 38398 34506 0 0 0.00% 0.00%
D 38398 34506 788 788 2.05% 2.28%

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 0 226 35805 38.42 4142 4061 826.3
A 3 137 33870 36.08 4142 4061 826.3
A 12 194 29552 30.85 4142 4061 826.3
B 7 220 693770 899.79 4093 3997 766.6
B 0 189 205112 262.35 4093 3997 766.6
B 0 197 177135 225.85 4093 3997 766.6
C 14 238 622288 676.45 3944 3969 914.1
C 7 247 86825 90.65 3944 3969 914.1
C 13 61 28018 26.31 3944 3969 914.1
D 12 227 2438990 2545.69 3977 3866 956.6
D 1 20 1788657 1865.83 3977 3866 956.6
D 1 52 1629468 1699.41 3977 3866 956.6

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