ASTROSAT CZTI

Data Quality Report

Orbit 26227

Creation date: 2024-06-27T19:26:20.229935
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_079T03_9000003790_26227cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26227cztM0_level2_quad_clean.evt
Size (bytes)84,680,64025,767,360
Size80.8 MB 24.6 MB
Events in quadrant A580,409176,072
Events in quadrant B592,400184,122
Events in quadrant C587,339172,769
Events in quadrant D728,194164,678

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023430
B024030
C023780
D028980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108300.000000%
B108320.184672%
C108360.554017%
D1083141.292705%

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 1083 1083 0 0 0.00% 0.00%
B 1083 1083 0 0 0.00% 0.00%
C 1083 1083 0 0 0.00% 0.00%
D 1083 1083 13 13 1.20% 1.20%

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 12521 399.09 147 144 31.0
A 13 254 2018 60.41 147 144 31.0
A 3 137 1280 36.62 147 144 31.0
B 12 111 3248 103.82 151 147 29.9
B 11 111 2808 89.09 151 147 29.9
B 14 111 2589 81.76 151 147 29.9
C 14 238 23557 662.37 144 145 35.3
C 13 61 929 22.18 144 145 35.3
C 3 233 483 9.56 144 145 35.3
D 1 52 191226 5449.18 140 136 35.1
D 2 120 4195 115.75 140 136 35.1
D 2 234 4166 114.92 140 136 35.1

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