ASTROSAT CZTI

Data Quality Report

Orbit 24937

Creation date: 2024-06-27T19:11:38.737228
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_205T01_9000003652_24937cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24937cztM0_level2_quad_clean.evt
Size (bytes)415,249,920120,144,960
Size396.0 MB 114.6 MB
Events in quadrant A2,868,501821,277
Events in quadrant B2,993,896829,867
Events in quadrant C3,184,162782,190
Events in quadrant D3,113,946779,344

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125311
B0128421
C0133821
D0132851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6107280.458490%
B6107290.474865%
C6107661.080727%
D6108210.343811%

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 7157 6108 0 0 0.00% 0.00%
B 7156 6107 0 0 0.00% 0.00%
C 7156 6107 0 0 0.00% 0.00%
D 7158 6109 8 8 0.11% 0.13%

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 13 254 9539 58.84 743 728 149.8
A 3 137 6676 39.72 743 728 149.8
A 0 226 6371 37.68 743 728 149.8
B 7 202 29252 203.11 738 719 140.5
B 0 230 19043 130.44 738 719 140.5
B 0 229 18180 124.3 738 719 140.5
C 7 247 319912 1957.04 704 708 163.1
C 14 238 115697 705.0 704 708 163.1
C 13 61 4846 25.37 704 708 163.1
D 1 52 191130 1120.02 713 693 170.0
D 8 195 89442 521.96 713 693 170.0
D 2 244 56379 327.51 713 693 170.0

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