ASTROSAT CZTI

Data Quality Report

Orbit 26258

Creation date: 2024-06-27T19:26:41.758440
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/AS1A09_079T03_9000003790_26258cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26258cztM0_level2_quad_clean.evt
Size (bytes)594,066,240108,849,600
Size566.5 MB 103.8 MB
Events in quadrant A3,372,693723,106
Events in quadrant B3,416,977761,568
Events in quadrant C7,449,663651,994
Events in quadrant D3,305,531700,344

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141880
B0142470
C0265310
D0142790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6593390.591536%
B6593620.940391%
C6593170825.906264%
D6592170.257888%

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 7918 6594 6 6 0.08% 0.09%
B 7918 6594 7 7 0.09% 0.11%
C 7918 6594 1327 1327 16.76% 20.12%
D 7917 6593 5 5 0.06% 0.08%

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 13 129887 771.51 840 825 167.3
A 13 254 10851 59.93 840 825 167.3
A 3 137 7413 39.38 840 825 167.3
B 5 172 36377 224.98 853 835 158.0
B 0 245 25391 155.44 853 835 158.0
B 12 111 18558 112.19 853 835 158.0
C 2 16 4479013 26978.17 718 724 166.0
C 14 238 115820 693.36 718 724 166.0
C 3 233 42915 254.17 718 724 166.0
D 1 52 169155 874.64 812 793 192.5
D 2 234 25447 128.08 812 793 192.5
D 8 195 19960 99.57 812 793 192.5

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