ASTROSAT CZTI

Data Quality Report

Orbit 47916

Creation date: 2024-08-07T20:09:39.445052
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/AS1A13_025T02_9000006380_47916cztM0_level2.fits modeM0/AS1A13_025T02_9000006380_47916cztM0_level2_quad_clean.evt
Size (bytes)558,460,800120,905,280
Size532.6 MB 115.3 MB
Events in quadrant A7,644,865784,463
Events in quadrant B3,877,776824,962
Events in quadrant C3,580,353806,313
Events in quadrant D4,967,655705,206

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283040
B0169450
C0163790
D0203800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77573134.035065%
B77581051.353442%
C7758410.528487%
D77584676.019593%

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 7757 7757 62 62 0.80% 0.80%
B 7758 7758 14 14 0.18% 0.18%
C 7758 7758 29 29 0.37% 0.37%
D 7758 7758 421 421 5.43% 5.43%

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 10 83 4027217 22246.97 863 841 181.0
A 13 248 266651 1468.68 863 841 181.0
A 3 137 10775 54.89 863 841 181.0
B 0 200 217605 1254.3 863 835 172.8
B 4 171 156139 898.64 863 835 172.8
B 5 32 25694 143.84 863 835 172.8
C 12 2 106287 524.28 853 857 201.1
C 14 67 56490 276.65 853 857 201.1
C 14 254 53963 264.08 853 857 201.1
D 2 249 1350508 6421.15 827 800 210.2
D 13 29 235490 1116.52 827 800 210.2
D 5 32 52508 246.0 827 800 210.2

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