ASTROSAT CZTI

Data Quality Report

Orbit 08808

Creation date: 2024-06-27T15:37:30.796223
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/AS1A03_135T01_9000001226_08808cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08808cztM0_level2_quad_clean.evt
Size (bytes)893,324,160141,635,520
Size851.9 MB 135.1 MB
Events in quadrant A7,787,117854,627
Events in quadrant B6,505,436864,767
Events in quadrant C5,699,554853,775
Events in quadrant D6,201,473838,089

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027812
B027810
C027810
D027820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335622100
B0297842058
C0275261647
D0293011893

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0171
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126411521.202437%
B126992672.102528%
C12695730.575030%
D126761200.946671%

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 15227 13232 20 20 0.13% 0.15%
B 15228 13235 95 95 0.62% 0.72%
C 15225 13262 0 0 0.00% 0.00%
D 15227 13267 38 38 0.25% 0.29%

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 5 1902829 6266.94 1494 1462 303.4
A 15 174 54060 173.36 1494 1462 303.4
A 5 16 39037 123.85 1494 1462 303.4
B 10 16 520630 1812.5 1501 1463 286.4
B 0 214 62587 213.39 1501 1463 286.4
B 5 255 50011 169.49 1501 1463 286.4
C 1 16 13394 35.28 1451 1460 338.3
C 13 61 11100 28.5 1451 1460 338.3
C 12 4 10068 25.45 1451 1460 338.3
D 2 152 299098 806.04 1441 1405 369.3
D 2 14 114734 306.85 1441 1405 369.3
D 7 71 109464 292.58 1441 1405 369.3

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