ASTROSAT CZTI

Data Quality Report

Orbit 20240410_A13_092T03_9000006176_level2

Creation date: 2024-04-13T13:01:36.892679
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_092T03_9000006176cztM0_level2.fits modeM0/AS1A13_092T03_9000006176cztM0_level2_quad_clean.evt
Size (bytes)175,291,200144,708,480
Size167.2 MB 138.0 MB
Events in quadrant A1,235,136992,874
Events in quadrant B224,73493,967
Events in quadrant C1,161,224815,027
Events in quadrant D1,048,742853,127

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770000
B01942190
C0744640
D0688320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04820
B04820
C04820
D04820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A236258813.729101%
B236252139290.548148%
C23625375715.902646%
D2362517027.204233%

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 27990 23625 0 0 0.00% 0.00%
B 27990 15419 0 0 0.00% 0.00%
C 27990 23618 0 0 0.00% 0.00%
D 27990 23615 0 0 0.00% 0.00%

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 0 29 1011 8.5 321 301 83.5
A 7 110 1009 8.48 321 301 83.5
A 0 30 950 7.77 321 301 83.5
B 2 9 202 10.44 59 57 13.9
B 2 8 183 9.07 59 57 13.9
B 5 128 183 9.07 59 57 13.9
C 1 81 884 7.28 307 285 82.2
C 3 202 858 6.97 307 285 82.2
C 1 80 847 6.83 307 285 82.2
D 7 3 792 6.14 300 273 84.5
D 6 38 791 6.13 300 273 84.5
D 4 250 786 6.07 300 273 84.5

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