ASTROSAT CZTI

Data Quality Report

Orbit 36153

Creation date: 2022-08-10T21:58:19.124773
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/AS1T04_069T01_9000005158_36153cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36153cztM0_level2_quad_clean.evt
Size (bytes)887,247,360151,277,760
Size846.1 MB 144.3 MB
Events in quadrant A5,349,979994,845
Events in quadrant B6,553,190981,795
Events in quadrant C6,087,429963,726
Events in quadrant D8,136,312879,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228384
B0266023
C0248843
D0314313

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11003180.163592%
B110032562.326638%
C110031100.999727%
D110038968.143234%

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 15062 11006 1 1 0.01% 0.01%
B 15062 11006 179 179 1.19% 1.63%
C 15062 11006 81 81 0.54% 0.74%
D 15062 11006 820 820 5.44% 7.45%

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 10 83 317192 1232.64 1270 1244 256.3
A 9 143 49988 190.17 1270 1244 256.3
A 8 144 38360 144.8 1270 1244 256.3
B 5 172 975562 4048.7 1246 1212 240.7
B 0 213 222195 918.25 1246 1212 240.7
B 4 171 213061 880.29 1246 1212 240.7
C 0 207 608386 2133.18 1218 1227 284.6
C 15 214 464233 1626.71 1218 1227 284.6
C 15 208 126812 441.23 1218 1227 284.6
D 13 249 1872115 6422.02 1184 1150 291.3
D 12 6 449587 1539.24 1184 1150 291.3
D 1 52 336038 1149.49 1184 1150 291.3

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