ASTROSAT CZTI

Data Quality Report

Orbit 20200917_A09_038T12_9000003880_level2

Creation date: 2022-09-13T14:14:22.251152
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/AS1A09_038T12_9000003880cztM0_level2_bc.evt modeM0/AS1A09_038T12_9000003880cztM0_level2_quad_clean.evt
Size (bytes)313,741,44077,958,720
Size299.2 MB 74.3 MB
Events in quadrant A2,612,964513,591
Events in quadrant B2,987,277481,590
Events in quadrant C1,001,735520,230
Events in quadrant D2,553,734495,777

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152920
B0177770
C0102240
D0153910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49842635.276886%
B498490718.198234%
C4984380.762440%
D49844078.166132%

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 5979 4984 64 64 1.07% 1.28%
B 5979 4984 279 279 4.67% 5.60%
C 5979 4984 0 0 0.00% 0.00%
D 5979 4984 165 165 2.76% 3.31%

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 13 1070689 18700.11 255 250 57.2
A 6 16 553982 9673.46 255 250 57.2
A 13 254 7631 128.94 255 250 57.2
B 3 64 1936365 39131.18 243 238 49.5
B 0 190 44773 900.1 243 238 49.5
B 10 246 38114 765.51 243 238 49.5
C 15 208 22319 355.21 254 252 62.1
C 3 233 2550 36.99 254 252 62.1
C 13 61 1371 18.01 254 252 62.1
D 1 52 1369378 23437.82 245 239 58.4
D 2 250 130279 2226.11 245 239 58.4
D 11 176 48658 828.87 245 239 58.4

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