ASTROSAT CZTI

Data Quality Report

Orbit 18406

Creation date: 2024-06-27T17:49:30.282681
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_083T01_9000002728_18406cztM0_level2.evt modeM0/AS1T03_083T01_9000002728_18406cztM0_level2_quad_clean.evt
Size (bytes)829,537,920204,557,760
Size791.1 MB 195.1 MB
Events in quadrant A5,231,1581,399,889
Events in quadrant B6,982,2711,393,249
Events in quadrant C5,361,6461,339,829
Events in quadrant D6,787,8211,286,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230962
B0279712
C0233452
D0278813

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112251080.962138%
B112253222.868597%
C112251481.318486%
D112253853.429844%

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 12965 11227 6 6 0.05% 0.05%
B 12965 11227 110 110 0.85% 0.98%
C 12965 11227 10 10 0.08% 0.09%
D 12965 11227 221 221 1.70% 1.97%

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 4 2 58933 212.88 1343 1317 270.7
A 0 226 11518 37.69 1343 1317 270.7
A 3 137 9926 31.81 1343 1317 270.7
B 10 245 1414717 5551.94 1337 1306 254.6
B 7 220 127546 495.88 1337 1306 254.6
B 0 189 50949 195.0 1337 1306 254.6
C 14 238 199078 661.54 1280 1289 299.0
C 0 207 105867 349.78 1280 1289 299.0
C 3 233 65210 213.8 1280 1289 299.0
D 7 238 696891 2245.73 1277 1240 309.8
D 1 52 475589 1531.32 1277 1240 309.8
D 8 230 306941 986.88 1277 1240 309.8

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