ASTROSAT CZTI

Data Quality Report

Orbit 06910

Creation date: 2024-06-27T15:12:59.869738
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/AS1A02_005T01_9000000948_06910cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06910cztM0_level2_quad_clean.evt
Size (bytes)51,649,92014,976,000
Size49.3 MB 14.3 MB
Events in quadrant A347,13194,763
Events in quadrant B392,20998,365
Events in quadrant C371,76297,471
Events in quadrant D392,40996,207

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B03919
C04024
D04030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043452685
B045932842
C043502644
D044842679

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B011
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81810.122249%
B84370.830368%
C83720.238949%
D85520.233918%

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 1842 1113 0 0 0.00% 0.00%
B 1947 1132 0 0 0.00% 0.00%
C 1904 1146 0 0 0.00% 0.00%
D 1614 1143 1 1 0.06% 0.09%

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 4 2 1227 55.77 89 87 20.4
A 13 14 1181 53.52 89 87 20.4
A 0 226 850 37.33 89 87 20.4
B 4 80 9216 447.11 93 91 20.4
B 4 173 8501 412.08 93 91 20.4
B 4 81 5479 264.0 93 91 20.4
C 9 247 9088 384.96 91 91 23.4
C 8 128 1781 72.31 91 91 23.4
C 9 54 973 37.74 91 91 23.4
D 2 216 17231 696.37 90 87 24.6
D 2 136 8295 333.4 90 87 24.6
D 8 195 7334 294.37 90 87 24.6

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