ASTROSAT CZTI

Data Quality Report

Orbit 08806

Creation date: 2024-06-27T15:37:29.756844
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_08806cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08806cztM0_level2_quad_clean.evt
Size (bytes)530,009,28085,835,520
Size505.5 MB 81.9 MB
Events in quadrant A3,889,248530,824
Events in quadrant B3,722,728526,653
Events in quadrant C3,234,630521,789
Events in quadrant D4,707,128509,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161712
B0160178
C0148855
D01904720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7336500.681570%
B73341431.949823%
C7334300.409054%
D73312733.723912%

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 7721 7336 3 3 0.04% 0.04%
B 7721 7336 72 72 0.93% 0.98%
C 7721 7336 0 0 0.00% 0.00%
D 7721 7336 261 261 3.38% 3.56%

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 529486 3028.91 854 836 174.5
A 13 251 33564 187.52 854 836 174.5
A 13 248 28390 157.87 854 836 174.5
B 10 16 330142 1985.9 854 834 165.8
B 0 214 32250 189.45 854 834 165.8
B 12 111 17828 102.48 854 834 165.8
C 1 16 7573 35.17 823 828 191.8
C 13 61 6295 28.51 823 828 191.8
C 8 128 5104 22.3 823 828 191.8
D 2 14 769895 3615.87 808 787 212.7
D 2 16 550609 2584.92 808 787 212.7
D 2 152 133462 623.76 808 787 212.7

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