ASTROSAT CZTI

Data Quality Report

Orbit 30883

Creation date: 2024-06-27T20:20:44.976509
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/AS1A10_071T28_9000004464_30883cztM0_level2.evt modeM0/AS1A10_071T28_9000004464_30883cztM0_level2_quad_clean.evt
Size (bytes)891,247,680138,015,360
Size850.0 MB 131.6 MB
Events in quadrant A5,051,663895,431
Events in quadrant B9,484,320881,589
Events in quadrant C4,944,683851,658
Events in quadrant D6,815,631837,595

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216961
B0355051
C0212561
D0267971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103001041.009709%
B103013243.145326%
C103011491.446462%
D103013042.951170%

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 10805 10300 14 14 0.13% 0.14%
B 10806 10301 57 57 0.53% 0.55%
C 10806 10301 3 3 0.03% 0.03%
D 10806 10301 190 190 1.76% 1.84%

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 31 274501 1097.59 1237 1212 249.0
A 13 254 18584 69.77 1237 1212 249.0
A 3 137 12919 47.02 1237 1212 249.0
B 6 159 2851894 12142.83 1216 1186 234.8
B 6 36 1591777 6775.26 1216 1186 234.8
B 0 190 99858 420.3 1216 1186 234.8
C 14 238 197281 701.95 1179 1185 279.4
C 0 10 42905 149.34 1179 1185 279.4
C 3 233 42871 149.22 1179 1185 279.4
D 8 195 1073290 3828.14 1183 1154 280.1
D 12 233 673245 2399.75 1183 1154 280.1
D 1 52 329523 1172.47 1183 1154 280.1

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