ASTROSAT CZTI

Data Quality Report

Orbit 20201019_A09_038T15_9000003932_level2

Creation date: 2021-01-07T17:11:37.503084
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_038T15_9000003932cztM0_level2_bc.evt modeM0/AS1A09_038T15_9000003932cztM0_level2_quad_clean.evt
Size (bytes)217,215,36099,483,840
Size207.2 MB 94.9 MB
Events in quadrant A1,093,209691,201
Events in quadrant B1,203,384699,772
Events in quadrant C2,033,261599,307
Events in quadrant D1,882,565654,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106610
B0110160
C0161050
D0131510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525870.133130%
B5258220.418410%
C525882315.652339%
D5258681.293267%

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 5257 5257 0 0 0.00% 0.00%
B 5257 5257 0 0 0.00% 0.00%
C 5257 5257 39 39 0.74% 0.74%
D 5257 5256 6 6 0.11% 0.11%

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 8518 129.04 282 277 63.9
A 6 16 2187 29.91 282 277 63.9
A 0 226 1901 25.43 282 277 63.9
B 10 245 44993 790.75 284 278 56.5
B 15 32 44603 783.85 284 278 56.5
B 4 52 11843 204.52 284 278 56.5
C 2 16 1079782 18015.42 243 243 59.9
C 15 208 13340 218.56 243 243 59.9
C 0 207 3001 46.03 243 243 59.9
D 1 52 508774 7611.14 273 267 66.8
D 12 227 137934 2060.55 273 267 66.8
D 2 250 115564 1725.72 273 267 66.8

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