ASTROSAT CZTI

Data Quality Report

Orbit 26854

Creation date: 2024-06-27T19:33:42.030232
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_224T01_9000003868_26854cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26854cztM0_level2_quad_clean.evt
Size (bytes)677,891,52091,834,560
Size646.5 MB 87.6 MB
Events in quadrant A5,970,177569,241
Events in quadrant B5,664,202581,384
Events in quadrant C3,491,733581,793
Events in quadrant D4,927,497557,514

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226400
B0214820
C0145660
D0191890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70464105.818904%
B70475127.265503%
C70472062.923230%
D70472934.157798%

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 7546 7046 141 141 1.87% 2.00%
B 7547 7047 193 193 2.56% 2.74%
C 7547 7047 0 0 0.00% 0.00%
D 7547 7047 152 152 2.01% 2.16%

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 2573863 14407.13 881 863 178.6
A 13 254 10746 55.34 881 863 178.6
A 3 137 8365 42.01 881 863 178.6
B 0 189 2090890 12394.49 878 855 168.6
B 10 246 100687 592.03 878 855 168.6
B 12 111 20565 116.89 878 855 168.6
C 14 238 137343 674.96 861 865 202.2
C 13 61 5942 25.11 861 865 202.2
C 9 209 1936 5.3 861 865 202.2
D 1 52 1183109 5893.99 858 839 200.6
D 11 176 215314 1069.23 858 839 200.6
D 7 80 185793 922.05 858 839 200.6

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