ASTROSAT CZTI

Data Quality Report

Orbit 20220818_A10_094T04_9000005288_level2

Creation date: 2022-08-22T14:38:52.859429
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_094T04_9000005288cztM0_level2_bc.evt modeM0/AS1A10_094T04_9000005288cztM0_level2_quad_clean.evt
Size (bytes)159,001,92047,050,560
Size151.6 MB 44.9 MB
Events in quadrant A1,170,399292,258
Events in quadrant B917,673306,217
Events in quadrant C1,035,556303,025
Events in quadrant D1,458,606287,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084750
B074170
C075120
D090730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33041785.387409%
B3304120.363196%
C3304451.361985%
D33041414.267554%

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 5277 3305 22 22 0.42% 0.67%
B 5277 3304 0 0 0.00% 0.00%
C 5277 3305 13 13 0.25% 0.39%
D 5277 3304 72 72 1.36% 2.18%

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 15 237 344908 9235.27 156 153 37.3
A 10 83 156580 4190.36 156 153 37.3
A 13 248 29051 774.12 156 153 37.3
B 5 200 111129 3204.61 161 158 34.6
B 0 190 54734 1576.04 161 158 34.6
B 0 230 33712 968.97 161 158 34.6
C 15 214 133149 3474.39 157 156 38.3
C 14 254 92766 2419.4 157 156 38.3
C 0 10 73391 1913.23 157 156 38.3
D 10 253 182404 4444.31 159 154 41.0
D 1 52 153625 3742.51 159 154 41.0
D 12 218 131397 3200.46 159 154 41.0

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