ASTROSAT CZTI

Data Quality Report

Orbit 31619

Creation date: 2024-06-27T20:30:46.224909
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/AS1A10_123T01_9000004620_31619cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31619cztM0_level2_quad_clean.evt
Size (bytes)234,466,56026,478,720
Size223.6 MB 25.3 MB
Events in quadrant A1,846,355156,170
Events in quadrant B1,880,929160,688
Events in quadrant C1,633,341158,084
Events in quadrant D1,572,978151,303

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101983168
B0110543661
C093893095
D094493071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031
B042
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07321
B07218
C07624
D07426

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A246029712.073171%
B23911335.562526%
C24322329.539474%
D2434913.738702%

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 7226 2653 137 137 1.90% 5.16%
B 7213 2567 11 11 0.15% 0.43%
C 7209 2607 77 77 1.07% 2.95%
D 7227 2604 4 4 0.06% 0.15%

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 0 13 700186 11527.0 292 286 60.7
A 15 174 17374 281.43 292 286 60.7
A 13 254 4300 66.11 292 286 60.7
B 6 159 621172 10546.49 291 283 58.9
B 10 245 71236 1205.22 291 283 58.9
B 4 80 12132 201.27 291 283 58.9
C 3 233 448414 6436.01 285 287 69.6
C 14 238 45684 651.99 285 287 69.6
C 0 10 8110 112.35 285 287 69.6
D 8 195 370269 5081.93 294 284 72.8
D 2 250 42090 574.23 294 284 72.8
D 10 203 24672 334.98 294 284 72.8

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