ASTROSAT CZTI

Data Quality Report

Orbit 15795

Creation date: 2024-06-27T17:13:31.194868
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/AS1A04_100T01_9000002336_15795cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15795cztM0_level2_quad_clean.evt
Size (bytes)444,830,40093,435,840
Size424.2 MB 89.1 MB
Events in quadrant A3,209,847581,547
Events in quadrant B3,416,711598,515
Events in quadrant C3,285,892590,871
Events in quadrant D3,088,658576,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144362
B0148231
C0144131
D0143871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69191291.864431%
B69191412.037867%
C69191251.806619%
D6919811.170689%

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 7225 6921 6 6 0.08% 0.09%
B 7225 6921 6 6 0.08% 0.09%
C 7225 6921 0 0 0.00% 0.00%
D 7225 6921 9 9 0.12% 0.13%

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 15 239 53441 316.65 813 793 166.3
A 14 254 26276 153.27 813 793 166.3
A 0 226 7254 38.86 813 793 166.3
B 4 173 70263 440.96 816 794 157.5
B 0 190 36307 225.42 816 794 157.5
B 4 48 29273 180.77 816 794 157.5
C 14 238 119701 643.53 784 789 184.8
C 7 247 89651 480.9 784 789 184.8
C 10 22 7578 36.74 784 789 184.8
D 4 239 29045 145.01 795 769 195.0
D 2 234 27833 138.8 795 769 195.0
D 13 172 16285 79.57 795 769 195.0

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