ASTROSAT CZTI

Data Quality Report

Orbit 50366

Creation date: 2025-01-20T09:54:20.295134
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/AS1C09_003T01_9000006442_50366cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50366cztM0_level2_quad_clean.evt
Size (bytes)826,606,08086,852,160
Size788.3 MB 82.8 MB
Events in quadrant A5,184,759626,641
Events in quadrant B4,138,877689,861
Events in quadrant C9,475,828462,027
Events in quadrant D11,263,077368,422

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200951
B0171091
C0329421
D0382574

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69264486.468380%
B69272784.013281%
C6927207529.955248%
D6926291742.116662%

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 7081 6928 303 303 4.28% 4.37%
B 7082 6929 135 135 1.91% 1.95%
C 7082 6929 1706 1706 24.09% 24.62%
D 7081 6928 2578 2578 36.41% 37.21%

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 7 206 658068 3575.33 743 724 183.9
A 8 248 540586 2936.34 743 724 183.9
A 10 253 161281 873.28 743 724 183.9
B 0 216 184693 1164.79 741 716 157.9
B 10 247 107095 673.5 741 716 157.9
B 6 51 102857 646.67 741 716 157.9
C 0 208 2323324 13117.24 647 644 177.1
C 15 196 1099180 6203.94 647 644 177.1
C 15 232 952675 5376.56 647 644 177.1
D 7 61 4259895 24579.68 621 600 173.3
D 6 42 1256588 7248.1 621 600 173.3
D 3 12 578240 3333.46 621 600 173.3

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