ASTROSAT CZTI

Data Quality Report

Orbit 27720

Creation date: 2024-06-27T19:43:30.450505
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/AS1T03_263T01_9000003990_27720cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27720cztM0_level2_quad_clean.evt
Size (bytes)492,036,480130,302,720
Size469.2 MB 124.3 MB
Events in quadrant A3,403,845898,876
Events in quadrant B3,571,518923,291
Events in quadrant C3,695,504872,774
Events in quadrant D3,813,554822,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138400
B0143730
C0148860
D0152310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6151310.503983%
B61511091.772070%
C61511702.763778%
D61511011.642009%

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 7496 6152 4 4 0.05% 0.07%
B 7496 6151 38 38 0.51% 0.62%
C 7496 6151 32 32 0.43% 0.52%
D 7496 6152 76 76 1.01% 1.24%

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 6 16 48882 266.49 864 856 180.2
A 8 192 14153 73.78 864 856 180.2
A 0 13 12128 62.55 864 856 180.2
B 3 64 157618 915.9 870 855 171.2
B 12 111 18133 100.95 870 855 171.2
B 11 111 16348 90.52 870 855 171.2
C 3 233 144322 712.73 834 845 201.3
C 0 207 140792 695.19 834 845 201.3
C 14 238 137483 678.75 834 845 201.3
D 1 52 594535 2899.36 825 808 204.8
D 2 250 48818 234.45 825 808 204.8
D 11 176 32905 156.74 825 808 204.8

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