ASTROSAT CZTI

Data Quality Report

Orbit 16230

Creation date: 2024-06-27T17:19:41.159958
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_112T01_9000002390_16230cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16230cztM0_level2_quad_clean.evt
Size (bytes)542,831,040100,719,360
Size517.7 MB 96.1 MB
Events in quadrant A3,994,458642,123
Events in quadrant B4,004,138653,006
Events in quadrant C4,157,091632,471
Events in quadrant D3,801,360626,816

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164842
B0164931
C0166941
D0163831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71201021.432584%
B7120941.320225%
C71202483.483146%
D7120951.334270%

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 7366 7122 47 47 0.64% 0.66%
B 7366 7122 17 17 0.23% 0.24%
C 7366 7122 59 59 0.80% 0.83%
D 7366 7122 31 31 0.42% 0.44%

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 0 253 443973 2526.99 862 845 175.4
A 15 174 154453 875.97 862 845 175.4
A 8 247 32328 179.54 862 845 175.4
B 7 220 202136 1226.37 863 844 164.1
B 4 173 155842 944.33 863 844 164.1
B 0 219 51231 306.98 863 844 164.1
C 3 233 637469 3303.16 819 825 192.7
C 0 207 149886 773.39 819 825 192.7
C 14 238 126225 650.62 819 825 192.7
D 1 52 473050 2293.31 838 814 205.9
D 15 0 42321 201.57 838 814 205.9
D 10 70 39225 186.53 838 814 205.9

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