ASTROSAT CZTI

Data Quality Report

Orbit 22082

Creation date: 2024-06-27T18:36:28.486182
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_146T01_9000003272_22082cztM0_level2.evt modeM0/AS1T03_146T01_9000003272_22082cztM0_level2_quad_clean.evt
Size (bytes)370,949,76058,219,200
Size353.8 MB 55.5 MB
Events in quadrant A2,171,753372,073
Events in quadrant B2,248,809378,006
Events in quadrant C2,757,276358,231
Events in quadrant D3,749,848337,675

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091691
B093491
C0111251
D0140759

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4495360.800890%
B4495561.245829%
C4495871.935484%
D449455512.349800%

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 5275 4496 0 0 0.00% 0.00%
B 5275 4496 1 1 0.02% 0.02%
C 5275 4496 6 6 0.11% 0.13%
D 5274 4495 502 502 9.52% 11.17%

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 7360 59.96 562 550 113.6
A 3 137 4807 37.48 562 550 113.6
A 0 226 4748 36.96 562 550 113.6
B 0 197 26307 235.35 561 547 109.5
B 0 190 14389 126.47 561 547 109.5
B 12 111 13288 116.41 561 547 109.5
C 0 239 576990 4520.06 536 539 127.5
C 14 238 83092 647.31 536 539 127.5
C 9 54 7177 52.05 536 539 127.5
D 1 52 1671988 13103.97 520 504 127.6
D 13 172 58994 458.55 520 504 127.6
D 2 16 31094 239.82 520 504 127.6

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