ASTROSAT CZTI

Data Quality Report

Orbit 35560

Creation date: 2024-06-27T21:15:04.816138
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/AS1T05_026T01_9000005092_35560cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35560cztM0_level2_quad_clean.evt
Size (bytes)872,951,040154,851,840
Size832.5 MB 147.7 MB
Events in quadrant A7,423,142981,350
Events in quadrant B5,912,4711,003,802
Events in quadrant C6,501,7461,005,787
Events in quadrant D5,884,358965,365

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307004
B0244613
C0254913
D0243093

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10596340.320876%
B105962632.482069%
C105962512.368818%
D105961131.066440%

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 13520 10598 1 1 0.01% 0.01%
B 13520 10598 133 133 0.98% 1.25%
C 13520 10598 236 236 1.75% 2.23%
D 13520 10598 90 90 0.67% 0.85%

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 15 169 2475153 10229.28 1209 1183 241.9
A 10 83 232869 957.97 1209 1183 241.9
A 13 6 30560 121.47 1209 1183 241.9
B 5 172 1023544 4494.77 1202 1171 227.5
B 0 189 49932 214.37 1202 1171 227.5
B 0 190 49375 211.92 1202 1171 227.5
C 0 239 685088 2482.38 1189 1198 275.5
C 0 10 618087 2239.18 1189 1198 275.5
C 15 214 469721 1700.64 1189 1198 275.5
D 8 195 309641 1076.98 1186 1153 286.4
D 1 52 252498 877.49 1186 1153 286.4
D 13 249 222440 772.55 1186 1153 286.4

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