ASTROSAT CZTI

Data Quality Report

Orbit 17331

Creation date: 2024-06-27T17:35:05.957099
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_169T01_9000002558_17331cztM0_level2.evt modeM0/AS1A05_169T01_9000002558_17331cztM0_level2_quad_clean.evt
Size (bytes)571,273,920126,299,520
Size544.8 MB 120.4 MB
Events in quadrant A4,088,374829,147
Events in quadrant B4,176,454826,483
Events in quadrant C4,135,828778,445
Events in quadrant D4,304,539781,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180912
B0182742
C0181032
D0189292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87731271.447623%
B87731751.994757%
C87732212.519093%
D87731211.379232%

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 9198 8775 0 0 0.00% 0.00%
B 9198 8775 0 0 0.00% 0.00%
C 9198 8775 0 0 0.00% 0.00%
D 9198 8775 16 16 0.17% 0.18%

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 0 226 8980 36.51 1064 1038 217.6
A 3 137 8494 34.27 1064 1038 217.6
A 12 194 7524 29.81 1064 1038 217.6
B 12 111 26193 122.86 1055 1025 204.9
B 4 173 23630 110.35 1055 1025 204.9
B 11 111 22492 104.79 1055 1025 204.9
C 14 238 155075 640.59 1016 1022 240.5
C 3 233 19999 78.91 1016 1022 240.5
C 13 61 7293 26.08 1016 1022 240.5
D 5 222 315885 1260.6 1031 1000 249.8
D 2 152 45380 177.67 1031 1000 249.8
D 2 234 30605 118.52 1031 1000 249.8

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