ASTROSAT CZTI

Data Quality Report

Orbit 07911

Creation date: 2024-06-27T15:25:27.965498
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/AS1A02_027T01_9000001084_07911cztM0_level2.evt modeM0/AS1A02_027T01_9000001084_07911cztM0_level2_quad_clean.evt
Size (bytes)282,237,12035,815,680
Size269.2 MB 34.2 MB
Events in quadrant A1,918,872209,714
Events in quadrant B1,619,442217,305
Events in quadrant C3,013,007219,337
Events in quadrant D1,775,505208,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076842
B068251
C0111831
D073131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3225892.759690%
B3225662.046512%
C32253219.953488%
D3225912.821705%

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 4055 3226 13 13 0.32% 0.40%
B 4055 3225 1 1 0.02% 0.03%
C 4055 3225 140 140 3.45% 4.34%
D 4055 3226 39 39 0.96% 1.21%

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 15 239 330469 3930.19 399 390 84.0
A 15 234 44333 523.22 399 390 84.0
A 8 15 4151 44.78 399 390 84.0
B 4 173 24779 307.39 404 395 79.3
B 4 239 10852 131.82 404 395 79.3
B 0 214 8492 102.07 404 395 79.3
C 1 16 1522872 16886.6 381 381 90.2
C 13 61 3012 29.18 381 381 90.2
C 12 4 1888 16.71 381 381 90.2
D 1 52 230730 2374.72 389 375 97.0
D 4 95 32565 331.84 389 375 97.0
D 5 233 13717 137.54 389 375 97.0

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter