ASTROSAT CZTI

Data Quality Report

Orbit 35045

Creation date: 2022-07-18T20:23:59.223004
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_053T44_9000005020_35045cztM0_level2.evt modeM0/AS1A10_053T44_9000005020_35045cztM0_level2_quad_clean.evt
Size (bytes)195,868,80042,408,000
Size186.8 MB 40.4 MB
Events in quadrant A1,160,342281,949
Events in quadrant B1,324,024285,589
Events in quadrant C1,321,707286,418
Events in quadrant D1,969,503266,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048032
B052521
C052611
D073941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227090.396476%
B2270562.466960%
C2270371.629956%
D2270984.317181%

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 4394 2271 2 2 0.05% 0.09%
B 4394 2271 52 52 1.18% 2.29%
C 4394 2271 29 29 0.66% 1.28%
D 4394 2271 82 82 1.87% 3.61%

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 36269 610.35 287 281 59.0
A 15 169 7003 114.0 287 281 59.0
A 13 6 5290 84.95 287 281 59.0
B 5 172 175704 3146.29 284 277 55.8
B 5 200 10028 174.88 284 277 55.8
B 15 32 9621 167.59 284 277 55.8
C 0 10 99613 1519.33 282 284 65.4
C 15 214 95364 1454.34 282 284 65.4
C 14 67 24158 365.17 282 284 65.4
D 8 195 616693 9001.39 277 269 68.5
D 5 223 110704 1612.64 277 269 68.5
D 2 250 27806 402.11 277 269 68.5

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