ASTROSAT CZTI

Data Quality Report

Orbit 08186

Creation date: 2024-06-27T15:29:11.215159
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_036T01_9000001128_08186cztM0_level2.evt modeM0/AS1A03_036T01_9000001128_08186cztM0_level2_quad_clean.evt
Size (bytes)1,113,433,920195,537,600
Size1.0 GB 186.5 MB
Events in quadrant A7,215,2991,224,731
Events in quadrant B7,678,6811,240,405
Events in quadrant C7,009,2731,220,383
Events in quadrant D10,729,7681,127,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326615
B0337564
C0325864
D0432934

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A160691010.628539%
B160691801.120169%
C16069720.448068%
D160699125.675524%

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 17494 16073 0 0 0.00% 0.00%
B 17494 16072 37 37 0.21% 0.23%
C 17494 16073 0 0 0.00% 0.00%
D 17494 16072 641 641 3.66% 3.99%

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 15 106532 279.11 1843 1801 375.2
A 0 226 17606 42.12 1843 1801 375.2
A 12 194 16489 39.14 1843 1801 375.2
B 0 214 192060 539.99 1849 1801 352.3
B 0 213 106748 297.86 1849 1801 352.3
B 4 173 63262 174.44 1849 1801 352.3
C 13 61 13899 29.19 1797 1801 414.4
C 3 202 4479 6.46 1797 1801 414.4
C 7 159 4265 5.95 1797 1801 414.4
D 6 6 1718170 4023.1 1757 1702 426.7
D 13 122 1388047 3249.35 1757 1702 426.7
D 13 105 340120 793.19 1757 1702 426.7

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