ASTROSAT CZTI

Data Quality Report

Orbit 14456

Creation date: 2024-06-27T16:55:25.157299
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/AS1G08_025T01_9000002130_14456cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14456cztM0_level2_quad_clean.evt
Size (bytes)531,524,16094,400,640
Size506.9 MB 90.0 MB
Events in quadrant A3,303,374628,648
Events in quadrant B3,519,427617,776
Events in quadrant C3,650,287612,462
Events in quadrant D5,193,077556,266

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140863
B0149232
C0150182
D0197512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6353420.661105%
B63531061.668503%
C6353600.944436%
D635468110.717658%

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 7538 6353 0 0 0.00% 0.00%
B 7539 6354 19 19 0.25% 0.30%
C 7538 6353 4 4 0.05% 0.06%
D 7539 6354 573 573 7.60% 9.02%

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 12 189 75513 456.15 814 800 163.8
A 8 15 51122 307.23 814 800 163.8
A 14 14 19237 112.56 814 800 163.8
B 15 222 67486 440.66 812 794 151.3
B 0 182 57888 377.24 812 794 151.3
B 0 219 51247 333.36 812 794 151.3
C 3 233 511379 2781.48 796 801 183.6
C 14 234 26269 138.74 796 801 183.6
C 7 247 7089 34.26 796 801 183.6
D 10 199 1328391 6826.72 756 739 194.5
D 13 122 417185 2141.34 756 739 194.5
D 12 110 353372 1813.22 756 739 194.5

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