ASTROSAT CZTI

Data Quality Report

Orbit 26160

Creation date: 2024-06-27T19:25:32.058256
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_138T04_9000003776_26160cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26160cztM0_level2_quad_clean.evt
Size (bytes)533,623,68092,756,160
Size508.9 MB 88.5 MB
Events in quadrant A3,677,619581,161
Events in quadrant B3,520,084595,634
Events in quadrant C4,198,171563,284
Events in quadrant D4,274,322565,465

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154260
B0149440
C0169460
D0172740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72252263.128028%
B72262122.933850%
C72263625.009687%
D72263124.317741%

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 7445 7225 22 22 0.30% 0.30%
B 7446 7226 1 1 0.01% 0.01%
C 7446 7226 104 104 1.40% 1.44%
D 7446 7226 167 167 2.24% 2.31%

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 187942 1037.28 893 871 180.3
A 6 16 46452 252.74 893 871 180.3
A 13 254 11165 57.08 893 871 180.3
B 0 190 28236 158.86 884 860 172.3
B 12 111 21170 117.85 884 860 172.3
B 11 111 19038 105.48 884 860 172.3
C 3 233 497163 2470.72 852 856 200.9
C 2 16 246194 1221.34 852 856 200.9
C 14 238 134944 667.52 852 856 200.9
D 12 233 558814 2655.07 874 850 210.2
D 1 52 363587 1726.08 874 850 210.2
D 2 234 30837 142.69 874 850 210.2

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