ASTROSAT CZTI

Data Quality Report

Orbit 04762

Creation date: 2024-06-27T14:46:37.684814
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/AS1G05_212T01_9000000600_04762cztM0_level2.evt modeM0/AS1G05_212T01_9000000600_04762cztM0_level2_quad_clean.evt
Size (bytes)542,217,60064,503,360
Size517.1 MB 61.5 MB
Events in quadrant A2,772,784394,721
Events in quadrant B3,050,142398,415
Events in quadrant C5,139,760375,203
Events in quadrant D5,051,674364,590

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123542
B0129493
C0194135
D0191475

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6014380.631859%
B6013611.014469%
C6013781.297189%
D60131252.078829%

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 7354 6015 2 2 0.03% 0.03%
B 7354 6015 15 15 0.20% 0.25%
C 7354 6015 14 14 0.19% 0.23%
D 7354 6015 76 76 1.03% 1.26%

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 50 21344 143.79 712 695 143.6
A 0 226 7628 48.28 712 695 143.6
A 12 194 7350 46.34 712 695 143.6
B 14 167 159385 1174.56 721 705 135.1
B 4 80 73770 540.83 721 705 135.1
B 15 204 25162 181.03 721 705 135.1
C 14 48 2387430 15345.81 681 685 155.5
C 1 16 77083 491.21 681 685 155.5
C 12 4 9895 59.22 681 685 155.5
D 11 132 1892552 11677.98 677 657 162.0
D 13 235 397706 2450.84 677 657 162.0
D 2 136 108887 668.06 677 657 162.0

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