ASTROSAT CZTI

Data Quality Report

Orbit 26161

Creation date: 2024-06-27T19:25:32.805739
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/AS1A09_138T04_9000003776_26161cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26161cztM0_level2_quad_clean.evt
Size (bytes)525,450,24083,056,320
Size501.1 MB 79.2 MB
Events in quadrant A3,958,864512,500
Events in quadrant B3,412,685521,412
Events in quadrant C4,242,977494,121
Events in quadrant D3,823,151498,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161760
B0145490
C0170850
D0157710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70062633.753925%
B70071982.825746%
C70073414.866562%
D70071662.369060%

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 7191 7006 62 62 0.86% 0.88%
B 7192 7007 4 4 0.06% 0.06%
C 7192 7007 112 112 1.56% 1.60%
D 7192 7007 44 44 0.61% 0.63%

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 13 600116 3372.93 867 848 177.7
A 6 16 15954 85.02 867 848 177.7
A 13 254 10786 55.94 867 848 177.7
B 0 190 21568 123.94 859 834 167.3
B 12 111 20825 119.5 859 834 167.3
B 11 111 18329 104.58 859 834 167.3
C 3 233 890007 4549.81 823 828 195.4
C 14 238 130805 665.07 823 828 195.4
C 2 16 17484 85.23 823 828 195.4
D 1 52 517112 2524.9 850 829 204.5
D 12 233 66501 321.17 850 829 204.5
D 2 234 31596 150.47 850 829 204.5

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