ASTROSAT CZTI

Data Quality Report

Orbit 26827

Creation date: 2024-06-27T19:33:25.944060
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/AS1A09_145T01_9000003866_26827cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26827cztM0_level2_quad_clean.evt
Size (bytes)752,857,92078,217,920
Size718.0 MB 74.6 MB
Events in quadrant A4,692,263488,687
Events in quadrant B3,849,634491,525
Events in quadrant C3,691,672477,897
Events in quadrant D10,088,477416,673

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186910
B0155800
C0152480
D0348800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70811251.765287%
B70821772.499294%
C70821091.539113%
D7081197827.933908%

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 7357 7083 8 8 0.11% 0.11%
B 7358 7084 62 62 0.84% 0.88%
C 7358 7084 8 8 0.11% 0.11%
D 7357 7083 1611 1611 21.90% 22.74%

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 13 1238687 6838.69 893 877 181.0
A 13 254 11624 59.38 893 877 181.0
A 3 137 8376 41.43 893 877 181.0
B 3 64 127829 749.05 881 861 169.5
B 10 246 114338 669.46 881 861 169.5
B 7 205 91477 534.59 881 861 169.5
C 14 176 206823 1020.02 853 859 201.9
C 14 238 135632 667.45 853 859 201.9
C 15 208 23272 111.0 853 859 201.9
D 1 52 4346885 22752.85 790 774 191.0
D 7 80 2352272 12310.61 790 774 191.0
D 2 250 264764 1382.05 790 774 191.0

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