ASTROSAT CZTI

Data Quality Report

Orbit 25393

Creation date: 2024-06-27T19:17:10.625028
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_057T04_9000003712_25393cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25393cztM0_level2_quad_clean.evt
Size (bytes)657,262,08080,910,720
Size626.8 MB 77.2 MB
Events in quadrant A4,711,583491,649
Events in quadrant B3,802,117497,437
Events in quadrant C3,641,897474,853
Events in quadrant D7,245,101467,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189330
B0159050
C0154560
D0265300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74531331.784516%
B74531602.146787%
C74531481.985778%
D745386611.619482%

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 7688 7453 0 0 0.00% 0.00%
B 7688 7453 1 1 0.01% 0.01%
C 7688 7454 0 0 0.00% 0.00%
D 7688 7453 701 701 9.12% 9.41%

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 1051880 5543.36 940 920 189.6
A 15 173 29953 153.14 940 920 189.6
A 13 254 10846 52.36 940 920 189.6
B 0 190 71875 398.61 924 900 178.1
B 0 229 39677 217.78 924 900 178.1
B 4 80 39472 216.63 924 900 178.1
C 14 238 143269 678.39 892 898 209.9
C 3 233 14801 66.25 892 898 209.9
C 7 247 10573 46.1 892 898 209.9
D 1 52 1476136 6943.78 878 851 212.5
D 12 233 1340927 6307.39 878 851 212.5
D 8 195 745746 3506.03 878 851 212.5

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