ASTROSAT CZTI

Data Quality Report

Orbit 03685

Creation date: 2024-06-27T14:32:27.641904
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/AS1G05_201T01_9000000478_03685cztM0_level2.evt modeM0/AS1G05_201T01_9000000478_03685cztM0_level2_quad_clean.evt
Size (bytes)191,836,80038,998,080
Size182.9 MB 37.2 MB
Events in quadrant A1,509,424250,795
Events in quadrant B1,733,355251,230
Events in quadrant C1,173,049253,965
Events in quadrant D1,225,395248,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062161
B068611
C051171
D053141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2453853.465145%
B2453632.568284%
C2453140.570730%
D2453180.733795%

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 2843 2454 25 25 0.88% 1.02%
B 2843 2454 12 12 0.42% 0.49%
C 2843 2454 3 3 0.11% 0.12%
D 2843 2454 7 7 0.25% 0.29%

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 0 118 185139 2933.07 294 286 63.0
A 13 251 117023 1852.27 294 286 63.0
A 0 50 29288 460.18 294 286 63.0
B 15 204 393175 6445.4 300 292 61.0
B 3 0 72987 1192.59 300 292 61.0
B 5 172 45831 747.09 300 292 61.0
C 1 16 16462 227.04 293 294 71.2
C 8 128 4619 60.73 293 294 71.2
C 13 61 2466 30.5 293 294 71.2
D 10 187 39010 536.03 292 283 72.2
D 2 37 23433 320.42 292 283 72.2
D 5 233 18545 252.77 292 283 72.2

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
Veto Counter