ASTROSAT CZTI

Data Quality Report

Orbit 19792

Creation date: 2024-06-27T18:07:04.350034
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_117T01_9000002958_19792cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19792cztM0_level2_quad_clean.evt
Size (bytes)1,065,147,840146,799,360
Size1015.8 MB 140.0 MB
Events in quadrant A13,213,658832,594
Events in quadrant B5,696,609968,557
Events in quadrant C6,096,906923,821
Events in quadrant D6,461,713911,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473262
B0244742
C0253942
D0272692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11684235520.155769%
B116851911.634574%
C116852782.379119%
D116852552.182285%

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 12229 11685 1872 1872 15.31% 16.02%
B 12230 11686 42 42 0.34% 0.36%
C 12231 11686 11 11 0.09% 0.09%
D 12231 11687 128 128 1.05% 1.10%

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 6 16 8186354 30911.96 1303 1275 264.8
A 11 29 12055 40.71 1303 1275 264.8
A 0 226 11159 37.33 1303 1275 264.8
B 7 220 127746 467.7 1405 1364 270.2
B 12 111 32711 116.0 1405 1364 270.2
B 11 111 29140 102.79 1405 1364 270.2
C 3 233 573644 1806.28 1357 1367 316.8
C 14 238 210460 659.96 1357 1367 316.8
C 7 247 19499 57.23 1357 1367 316.8
D 1 52 923632 2737.55 1385 1345 336.9
D 7 238 185721 547.27 1385 1345 336.9
D 12 218 100293 293.7 1385 1345 336.9

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