ASTROSAT CZTI

Data Quality Report

Orbit 50189

Creation date: 2025-01-10T17:57:29.556927
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/AS1C09_003T01_9000006442_50189cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50189cztM0_level2_quad_clean.evt
Size (bytes)995,238,72056,854,080
Size949.1 MB 54.2 MB
Events in quadrant A6,355,126478,169
Events in quadrant B3,575,172618,820
Events in quadrant C13,865,36326,785
Events in quadrant D12,590,453186,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228381
B0146731
C0451491
D0414765

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5878119820.381082%
B58791692.874639%
C5879564896.070760%
D5878407169.258251%

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 7003 5879 982 982 14.02% 16.70%
B 7004 5880 51 51 0.73% 0.87%
C 7004 5879 4847 4847 69.20% 82.45%
D 7003 5879 3552 3552 50.72% 60.42%

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 98 2102856 14640.16 573 559 143.6
A 12 250 420105 2921.67 573 559 143.6
A 4 4 356675 2479.95 573 559 143.6
B 4 206 372385 2877.34 617 596 129.2
B 5 172 134286 1034.65 617 596 129.2
B 3 249 107678 828.73 617 596 129.2
C 4 111 8901863 175731.23 176 175 50.7
C 15 230 1419787 28025.04 176 175 50.7
C 15 213 1059903 20920.45 176 175 50.7
D 12 6 3635295 30846.4 407 391 117.8
D 8 192 1819811 15439.9 407 391 117.8
D 15 185 1150035 9756.07 407 391 117.8

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