ASTROSAT CZTI

Data Quality Report

Orbit 18608

Creation date: 2024-06-27T17:52:21.942207
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/AS1A05_083T01_9000002772_18608cztM0_level2.evt modeM0/AS1A05_083T01_9000002772_18608cztM0_level2_quad_clean.evt
Size (bytes)171,181,44029,427,840
Size163.3 MB 28.1 MB
Events in quadrant A1,175,704180,073
Events in quadrant B1,300,710184,884
Events in quadrant C1,256,431178,398
Events in quadrant D1,288,367176,793

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048931
B052351
C051301
D053491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2370542.278481%
B2370672.827004%
C2370682.869198%
D2370572.405063%

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 3170 2370 0 0 0.00% 0.00%
B 3170 2370 3 3 0.09% 0.13%
C 3170 2370 12 12 0.38% 0.51%
D 3170 2370 13 13 0.41% 0.55%

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 13 254 3597 51.78 304 297 63.7
A 0 226 2629 36.59 304 297 63.7
A 3 137 2421 33.33 304 297 63.7
B 0 230 91074 1497.92 302 293 60.6
B 0 198 12319 198.43 302 293 60.6
B 0 229 9714 155.45 302 293 60.6
C 9 54 77713 1116.37 289 291 69.4
C 14 238 44987 644.49 289 291 69.4
C 3 233 5550 75.83 289 291 69.4
D 1 52 135581 1847.02 294 285 73.3
D 7 238 20888 281.27 294 285 73.3
D 8 195 9148 120.99 294 285 73.3

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