ASTROSAT CZTI

Data Quality Report

Orbit 15249

Creation date: 2024-06-27T17:05:50.225980
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/AS1T02_072T01_9000002250_15249cztM0_level2.evt modeM0/AS1T02_072T01_9000002250_15249cztM0_level2_quad_clean.evt
Size (bytes)779,575,680195,215,040
Size743.5 MB 186.2 MB
Events in quadrant A5,280,6141,292,383
Events in quadrant B5,999,3491,302,584
Events in quadrant C6,565,4531,305,008
Events in quadrant D5,028,5921,260,956

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230670
B0249920
C0259810
D0227250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108581421.307791%
B108582692.477436%
C108581951.795911%
D108581381.270952%

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 11139 10859 1 1 0.01% 0.01%
B 11139 10860 69 69 0.62% 0.64%
C 11139 10860 41 41 0.37% 0.38%
D 11139 10860 35 35 0.31% 0.32%

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 12 189 446296 1770.64 1240 1211 251.4
A 0 253 29373 112.03 1240 1211 251.4
A 9 143 27830 105.9 1240 1211 251.4
B 10 245 340457 1437.48 1237 1202 236.0
B 10 16 327667 1383.29 1237 1202 236.0
B 3 64 220446 928.97 1237 1202 236.0
C 3 233 1443796 5212.74 1210 1216 276.7
C 4 254 380655 1371.1 1210 1216 276.7
C 3 9 18280 61.66 1210 1216 276.7
D 7 38 202172 685.68 1212 1173 293.1
D 2 16 116717 394.16 1212 1173 293.1
D 2 136 54692 182.57 1212 1173 293.1

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