ASTROSAT CZTI

Data Quality Report

Orbit 20190922_T03_138T05_9000003182_level2

Creation date: 2019-09-24T14:40:08.974107
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/AS1T03_138T05_9000003182cztM0_level2_bc.evt modeM0/AS1T03_138T05_9000003182cztM0_level2_quad_clean.evt
Size (bytes)295,136,64064,742,400
Size281.5 MB 61.7 MB
Events in quadrant A1,173,787450,267
Events in quadrant B1,168,588458,988
Events in quadrant C1,089,816429,618
Events in quadrant D5,156,713268,866

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105120
B0105090
C0104000
D0260660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501880.159426%
B5018200.398565%
C5018250.498206%
D5018194038.660821%

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 5017 5017 0 0 0.00% 0.00%
B 5017 5017 0 0 0.00% 0.00%
C 5017 5017 0 0 0.00% 0.00%
D 5017 5017 613 613 12.22% 12.22%

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 6 16 39792 607.81 293 288 65.0
A 13 254 7635 113.04 293 288 65.0
A 0 226 1924 25.17 293 288 65.0
B 0 190 7549 126.4 297 291 57.4
B 4 216 6654 110.82 297 291 57.4
B 0 230 6229 103.42 297 291 57.4
C 0 239 13093 193.45 278 276 66.3
C 4 175 7932 115.55 278 276 66.3
C 13 61 1651 20.75 278 276 66.3
D 1 52 4077820 76603.32 224 216 53.2
D 14 35 143497 2691.73 224 216 53.2
D 1 20 41639 778.19 224 216 53.2

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter