ASTROSAT CZTI

Data Quality Report

Orbit 20745

Creation date: 2024-06-27T18:17:01.438319
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/AS1A05_088T03_9000003042_20745cztM0_level2.evt modeM0/AS1A05_088T03_9000003042_20745cztM0_level2_quad_clean.evt
Size (bytes)128,643,84025,738,560
Size122.7 MB 24.5 MB
Events in quadrant A911,933163,845
Events in quadrant B937,062166,680
Events in quadrant C913,158159,796
Events in quadrant D1,010,724158,924

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0446
B0437
C0435
D0448

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041
B042
C042
D053

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04467779
B04549782
C04482767
D04870772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176190.511073%
B176170.397501%
C1767231.301641%
D1772160.902935%

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 2677 1792 0 0 0.00% 0.00%
B 2668 1803 0 0 0.00% 0.00%
C 2693 1805 0 0 0.00% 0.00%
D 2710 1810 9 9 0.33% 0.50%

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 3 137 2068 36.67 237 232 50.1
A 0 226 2052 36.35 237 232 50.1
A 12 194 1697 29.26 237 232 50.1
B 6 36 6989 144.24 233 226 46.9
B 0 197 5664 115.98 233 226 46.9
B 12 111 5619 115.02 233 226 46.9
C 14 238 35034 637.47 224 225 54.6
C 3 233 3297 56.26 224 225 54.6
C 13 61 1631 25.75 224 225 54.6
D 1 52 102679 1808.43 229 222 56.7
D 5 222 27681 484.67 229 222 56.7
D 1 20 8672 149.15 229 222 56.7

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