ASTROSAT CZTI

Data Quality Report

Orbit 20679

Creation date: 2024-06-27T18:18:16.546885
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_229T02_9000003060_20679cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20679cztM0_level2_quad_clean.evt
Size (bytes)483,770,88067,236,480
Size461.4 MB 64.1 MB
Events in quadrant A3,621,563394,729
Events in quadrant B3,404,653405,457
Events in quadrant C3,213,984395,314
Events in quadrant D3,960,027377,481

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149561
B0142472
C0136591
D0161801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66411321.987652%
B6640781.174699%
C6640821.234940%
D66411522.288812%

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 7636 6642 78 78 1.02% 1.17%
B 7635 6641 12 12 0.16% 0.18%
C 7635 6641 0 0 0.00% 0.00%
D 7636 6642 114 114 1.49% 1.72%

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 5 16 471055 2862.34 813 797 164.3
A 12 16 19078 111.27 813 797 164.3
A 12 194 9274 51.6 813 797 164.3
B 7 220 141545 909.12 817 797 154.8
B 0 229 19649 121.77 817 797 154.8
B 12 111 18685 115.54 817 797 154.8
C 14 238 124296 670.08 788 793 184.3
C 3 233 6955 33.43 788 793 184.3
C 5 4 5707 26.66 788 793 184.3
D 1 52 832151 4376.21 788 768 190.0
D 13 153 55375 287.44 788 768 190.0
D 2 234 29910 153.4 788 768 190.0

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