ASTROSAT CZTI

Data Quality Report

Orbit 27719

Creation date: 2024-06-27T19:43:28.903928
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/AS1T03_262T01_9000003988_27719cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27719cztM0_level2_quad_clean.evt
Size (bytes)415,071,36093,352,320
Size395.8 MB 89.0 MB
Events in quadrant A2,906,137624,868
Events in quadrant B3,018,011624,788
Events in quadrant C3,064,506602,526
Events in quadrant D3,202,242584,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123700
B0126220
C0127300
D0134640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5581691.236338%
B5581661.182584%
C55811322.365168%
D5581781.397599%

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 6866 5581 5 5 0.07% 0.09%
B 6866 5581 9 9 0.13% 0.16%
C 6866 5581 13 13 0.19% 0.23%
D 6866 5581 35 35 0.51% 0.63%

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 8 192 14300 91.33 748 735 148.5
A 13 254 8773 54.12 748 735 148.5
A 3 137 6479 38.67 748 735 148.5
B 3 64 86601 624.89 738 722 137.4
B 12 111 16021 111.32 738 722 137.4
B 11 111 14679 101.56 738 722 137.4
C 3 233 128249 761.5 723 727 167.5
C 14 238 116654 692.26 723 727 167.5
C 13 61 4894 24.88 723 727 167.5
D 1 52 250945 1475.62 727 711 169.6
D 8 195 90659 530.42 727 711 169.6
D 2 250 57454 334.61 727 711 169.6

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