ASTROSAT CZTI

Data Quality Report

Orbit 08813

Creation date: 2024-06-27T15:37:34.757249
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/AS1A03_135T01_9000001226_08813cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08813cztM0_level2_quad_clean.evt
Size (bytes)451,808,64094,717,440
Size430.9 MB 90.3 MB
Events in quadrant A3,375,977625,234
Events in quadrant B3,235,088627,265
Events in quadrant C2,917,974610,823
Events in quadrant D3,749,624589,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137602
B0132941
C0124851
D0151091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5958641.074186%
B5958811.359517%
C5958370.621014%
D59581973.306479%

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 7238 5958 11 11 0.15% 0.18%
B 7238 5958 20 20 0.28% 0.34%
C 7238 5958 0 0 0.00% 0.00%
D 7238 5958 149 149 2.06% 2.50%

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 8 5 327395 2056.75 784 771 158.8
A 13 248 20071 121.53 784 771 158.8
A 15 174 8328 47.59 784 771 158.8
B 10 16 158963 1081.61 771 755 146.3
B 4 80 30024 200.1 771 755 146.3
B 0 214 26149 173.61 771 755 146.3
C 14 234 6989 36.44 745 751 171.2
C 13 61 5910 30.14 745 751 171.2
C 1 16 2308 9.09 745 751 171.2
D 2 16 599147 3315.9 748 732 180.5
D 2 152 103655 570.31 748 732 180.5
D 12 221 73797 404.86 748 732 180.5

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