ASTROSAT CZTI

Data Quality Report

Orbit 15243

Creation date: 2024-06-27T17:05:46.160373
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/AS1T02_072T01_9000002250_15243cztM0_level2.evt modeM0/AS1T02_072T01_9000002250_15243cztM0_level2_quad_clean.evt
Size (bytes)449,939,520126,348,480
Size429.1 MB 120.5 MB
Events in quadrant A3,141,818851,031
Events in quadrant B3,278,916864,475
Events in quadrant C3,603,150853,014
Events in quadrant D3,170,409814,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135693
B0138782
C0144252
D0138712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365210.329929%
B6365821.288295%
C6365390.612726%
D6365300.471328%

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 7566 6367 5 5 0.07% 0.08%
B 7566 6367 26 26 0.34% 0.41%
C 7566 6367 13 13 0.17% 0.20%
D 7566 6367 16 16 0.21% 0.25%

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 0 253 95056 621.01 758 743 151.9
A 12 189 88656 578.87 758 743 151.9
A 13 248 36442 235.06 758 743 151.9
B 10 16 143497 1005.4 763 744 142.0
B 0 197 25457 174.05 763 744 142.0
B 0 189 24460 167.03 763 744 142.0
C 3 233 546169 3199.43 748 752 170.5
C 4 254 118125 688.51 748 752 170.5
C 7 247 22263 126.18 748 752 170.5
D 2 16 101482 568.13 740 717 177.4
D 1 255 86456 483.41 740 717 177.4
D 2 136 54656 304.12 740 717 177.4

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