ASTROSAT CZTI

Data Quality Report

Orbit 25620

Creation date: 2024-06-27T19:19:37.616691
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/AS1A07_127T03_9000003732_25620cztM0_level2.evt modeM0/AS1A07_127T03_9000003732_25620cztM0_level2_quad_clean.evt
Size (bytes)133,761,60032,938,560
Size127.6 MB 31.4 MB
Events in quadrant A941,105223,664
Events in quadrant B1,003,106232,858
Events in quadrant C908,984217,630
Events in quadrant D1,092,198210,587

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037840
B039560
C037190
D042980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1520130.855263%
B1520885.789474%
C1520352.302632%
D1520211.381579%

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 2910 1521 0 0 0.00% 0.00%
B 2910 1521 38 38 1.31% 2.50%
C 2910 1521 0 0 0.00% 0.00%
D 2910 1521 10 10 0.34% 0.66%

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 8 192 35853 765.92 225 221 46.5
A 0 13 16276 345.11 225 221 46.5
A 6 16 14386 304.48 225 221 46.5
B 5 172 131862 3084.54 221 216 42.7
B 12 111 4719 105.51 221 216 42.7
B 11 111 4245 94.4 221 216 42.7
C 14 238 35056 656.15 221 222 53.1
C 3 233 10958 202.23 221 222 53.1
C 0 10 2266 38.5 221 222 53.1
D 1 52 204085 3739.2 220 214 54.5
D 8 195 50848 928.67 220 214 54.5
D 2 234 5157 90.65 220 214 54.5

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