ASTROSAT CZTI

Data Quality Report

Orbit 24600

Creation date: 2024-06-27T19:07:45.472273
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/AS1T03_189T01_9000003614_24600cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24600cztM0_level2_quad_clean.evt
Size (bytes)746,357,760143,187,840
Size711.8 MB 136.6 MB
Events in quadrant A5,162,610905,431
Events in quadrant B5,263,227915,500
Events in quadrant C5,365,580877,104
Events in quadrant D6,052,470862,705

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227191
B0228171
C0233131
D0255511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11211390.347873%
B11211610.544108%
C112111211.079297%
D112111531.364731%

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 11671 11212 0 0 0.00% 0.00%
B 11671 11212 1 1 0.01% 0.01%
C 11671 11212 10 10 0.09% 0.09%
D 11671 11212 165 165 1.41% 1.47%

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 13 254 14769 50.41 1333 1301 267.2
A 10 229 13341 45.07 1333 1301 267.2
A 3 137 12874 43.32 1333 1301 267.2
B 12 111 32456 122.8 1327 1290 253.8
B 7 202 30815 116.33 1327 1290 253.8
B 11 111 29057 109.41 1327 1290 253.8
C 14 238 202684 665.71 1285 1293 302.5
C 7 247 148468 486.5 1285 1293 302.5
C 13 61 8848 24.97 1285 1293 302.5
D 1 52 933628 2966.41 1293 1255 314.3
D 8 195 213396 674.94 1293 1255 314.3
D 2 234 49891 154.74 1293 1255 314.3

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