ASTROSAT CZTI

Data Quality Report

Orbit 00182

Creation date: 2024-06-27T13:57:39.807526
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/AS1P01_136T01_9000000014_00182cztM0_level2.evt modeM0/AS1P01_136T01_9000000014_00182cztM0_level2_quad_clean.evt
Size (bytes)1,128,090,24046,491,840
Size1.1 GB 44.3 MB
Events in quadrant A9,057,617245,989
Events in quadrant B9,362,229257,661
Events in quadrant C6,998,639252,670
Events in quadrant D8,358,056239,573

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311862
B0320661
C0250871
D0291051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58442654.534565%
B58701762.998296%
C5893370.627864%
D59431843.096079%

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 7535 5846 1017 1017 13.50% 17.40%
B 7535 5873 1175 1175 15.59% 20.01%
C 7535 5896 143 143 1.90% 2.43%
D 7535 5945 537 537 7.13% 9.03%

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 7 128 1345718 3276.8 1851 1838 410.1
A 14 10 416592 1011.3 1851 1838 410.1
A 15 79 34927 80.68 1851 1838 410.1
B 0 247 1489980 3436.18 1846 1859 433.1
B 10 199 528989 1217.18 1846 1859 433.1
B 3 204 86017 194.33 1846 1859 433.1
C 0 202 139784 286.64 1703 1769 481.5
C 9 201 52403 105.16 1703 1769 481.5
C 0 188 44556 88.86 1703 1769 481.5
D 13 89 779182 1469.92 1713 1770 528.9
D 12 14 264877 497.48 1713 1770 528.9
D 13 255 262809 493.57 1713 1770 528.9

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