ASTROSAT CZTI

Data Quality Report

Orbit 36145

Creation date: 2022-08-10T20:25:14.940519
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/AS1T04_069T01_9000005158_36145cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36145cztM0_level2_quad_clean.evt
Size (bytes)394,767,36056,986,560
Size376.5 MB 54.3 MB
Events in quadrant A2,518,516355,363
Events in quadrant B2,842,771361,399
Events in quadrant C2,968,488345,947
Events in quadrant D3,295,230321,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103523
B0113782
C0115642
D0130202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4860150.308642%
B4860761.563786%
C48601372.818930%
D48602044.197531%

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 6983 4861 5 5 0.07% 0.10%
B 6983 4861 42 42 0.60% 0.86%
C 6983 4861 105 105 1.50% 2.16%
D 6983 4861 167 167 2.39% 3.44%

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 162137 1353.93 596 587 119.3
A 9 143 29929 245.91 596 587 119.3
A 8 144 10822 85.78 596 587 119.3
B 5 172 334325 2952.65 595 581 113.0
B 4 171 44844 391.6 595 581 113.0
B 5 255 36415 317.02 595 581 113.0
C 1 23 270594 2029.86 574 580 133.0
C 0 10 224401 1682.6 574 580 133.0
C 15 214 206244 1546.1 574 580 133.0
D 1 52 495906 3592.34 564 549 137.9
D 13 249 213972 1547.75 564 549 137.9
D 12 17 158719 1147.05 564 549 137.9

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