ASTROSAT CZTI

Data Quality Report

Orbit 03891

Creation date: 2024-06-27T14:34:51.732386
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/AS1G05_239T02_9000000496_03891cztM0_level2.evt modeM0/AS1G05_239T02_9000000496_03891cztM0_level2_quad_clean.evt
Size (bytes)542,543,04062,691,840
Size517.4 MB 59.8 MB
Events in quadrant A3,840,138365,680
Events in quadrant B3,364,512380,925
Events in quadrant C5,899,165352,714
Events in quadrant D2,898,916357,401

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154253
B0140882
C0219052
D0132302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63212213.496282%
B6321841.328904%
C63214707.435532%
D6321210.332226%

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 7496 6321 132 132 1.76% 2.09%
B 7496 6321 31 31 0.41% 0.49%
C 7495 6320 419 419 5.59% 6.63%
D 7496 6321 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 0 118 386687 2546.91 739 725 151.5
A 8 15 316778 2085.59 739 725 151.5
A 0 199 178038 1170.06 739 725 151.5
B 15 204 266925 1807.88 761 744 147.2
B 10 16 93715 631.45 761 744 147.2
B 0 183 13772 88.48 761 744 147.2
C 2 53 3117838 19099.29 699 704 163.2
C 8 128 15220 88.94 699 704 163.2
C 14 67 12165 70.22 699 704 163.2
D 1 20 41658 234.05 716 695 175.0
D 13 239 38011 213.21 716 695 175.0
D 2 206 24975 138.73 716 695 175.0

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
Veto Counter