ASTROSAT CZTI

Data Quality Report

Orbit 35364

Creation date: 2024-06-27T21:12:32.289265
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/AS1A11_099T01_9000005068_35364cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35364cztM0_level2_quad_clean.evt
Size (bytes)558,279,36059,241,600
Size532.4 MB 56.5 MB
Events in quadrant A2,741,006390,333
Events in quadrant B6,847,372334,460
Events in quadrant C3,109,058378,905
Events in quadrant D3,883,814351,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107993
B0237462
C0119722
D0150422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4820420.871369%
B4820159133.008299%
C48201743.609959%
D48201463.029046%

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 6972 4821 26 26 0.37% 0.54%
B 6972 4821 1259 1259 18.06% 26.11%
C 6972 4821 139 139 1.99% 2.88%
D 6972 4821 152 152 2.18% 3.15%

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 10 83 110513 871.95 630 620 126.0
A 9 143 100509 792.58 630 620 126.0
A 15 169 78885 621.0 630 620 126.0
B 4 251 4384696 41071.16 562 548 106.7
B 5 172 133729 1247.65 562 548 106.7
B 4 232 33883 312.29 562 548 106.7
C 0 10 585105 4318.84 592 598 135.3
C 15 214 202220 1489.76 592 598 135.3
C 3 233 6355 42.54 592 598 135.3
D 8 195 616053 4165.63 598 580 147.8
D 12 233 340891 2303.28 598 580 147.8
D 2 152 168659 1137.58 598 580 147.8

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