ASTROSAT CZTI

Data Quality Report

Orbit 20220228_C07_006T02_9000004980_level2

Creation date: 2022-03-16T11:32:04.331548
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/AS1C07_006T02_9000004980cztM0_level2_bc.evt modeM0/AS1C07_006T02_9000004980cztM0_level2_quad_clean.evt
Size (bytes)180,201,60039,456,000
Size171.9 MB 37.6 MB
Events in quadrant A1,096,063233,693
Events in quadrant B1,086,419234,817
Events in quadrant C1,042,003232,414
Events in quadrant D1,962,902220,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085830
B089270
C081740
D0115190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A385420.051894%
B3854782.023871%
C3854260.674624%
D3854320.830306%

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 3854 3854 0 0 0.00% 0.00%
B 3853 3853 2 2 0.05% 0.05%
C 3853 3853 1 1 0.03% 0.03%
D 3853 3853 3 3 0.08% 0.08%

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 15 169 215197 4598.4 201 197 46.8
A 7 48 37414 795.99 201 197 46.8
A 10 83 27391 581.62 201 197 46.8
B 5 172 92289 2202.88 200 197 41.8
B 5 255 74535 1778.2 200 197 41.8
B 4 81 38628 919.29 200 197 41.8
C 15 214 158266 3410.97 195 193 46.3
C 15 159 48112 1034.02 195 193 46.3
C 0 10 45562 978.99 195 193 46.3
D 8 195 792725 15515.86 194 188 51.1
D 2 250 88019 1719.51 194 188 51.1
D 12 233 42582 829.97 194 188 51.1

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