ASTROSAT CZTI

Data Quality Report

Orbit 45287

Creation date: 2024-06-27T23:11:58.543055
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_024T03_9000006064_45287cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45287cztM0_level2_quad_clean.evt
Size (bytes)402,768,00096,739,200
Size384.1 MB 92.3 MB
Events in quadrant A5,073,018634,249
Events in quadrant B2,987,640676,289
Events in quadrant C2,678,979645,494
Events in quadrant D3,720,120569,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194361
B0128771
C0122451
D0151291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57792804.845129%
B57791172.024572%
C5780170.294118%
D57802033.512111%

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 6944 5780 165 165 2.38% 2.85%
B 6944 5781 67 67 0.96% 1.16%
C 6945 5782 16 16 0.23% 0.28%
D 6945 5782 211 211 3.04% 3.65%

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 2084644 15607.22 639 626 133.5
A 10 248 302651 2261.87 639 626 133.5
A 13 248 210690 1573.17 639 626 133.5
B 5 172 193992 1510.14 647 628 128.0
B 5 32 71775 555.65 647 628 128.0
B 0 189 63180 488.52 647 628 128.0
C 14 254 147532 979.41 636 639 150.0
C 3 233 34963 228.86 636 639 150.0
C 12 249 10921 68.56 636 639 150.0
D 13 249 402689 2587.64 620 600 155.4
D 2 249 401854 2582.26 620 600 155.4
D 10 199 124092 794.73 620 600 155.4

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