ASTROSAT CZTI

Data Quality Report

Orbit 25716

Creation date: 2024-06-27T19:20:43.700229
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_008T06_9000003748_25716cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25716cztM0_level2_quad_clean.evt
Size (bytes)507,185,28071,876,160
Size483.7 MB 68.5 MB
Events in quadrant A3,339,006433,985
Events in quadrant B3,468,170440,026
Events in quadrant C3,405,410417,304
Events in quadrant D4,681,694406,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141200
B0143150
C0143000
D0182980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6861500.728757%
B6862570.830662%
C6862861.253279%
D68612223.235680%

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 7761 6861 0 0 0.00% 0.00%
B 7762 6862 3 3 0.04% 0.04%
C 7762 6862 3 3 0.04% 0.04%
D 7761 6861 151 151 1.95% 2.20%

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 18835 104.19 860 839 172.7
A 13 254 11454 61.46 860 839 172.7
A 3 137 7853 40.61 860 839 172.7
B 0 219 43410 261.03 852 830 163.1
B 0 190 34745 207.91 852 830 163.1
B 12 111 19859 116.65 852 830 163.1
C 14 238 130436 675.07 815 820 192.0
C 3 233 63662 327.3 815 820 192.0
C 0 207 37565 191.38 815 820 192.0
D 1 52 1038716 5093.6 825 799 203.8
D 7 80 167991 820.5 825 799 203.8
D 8 195 155495 759.17 825 799 203.8

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