ASTROSAT CZTI

Data Quality Report

Orbit 38221

Creation date: 2024-06-27T21:49:57.720588
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/AS1A07_145T01_9000005370_38221cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38221cztM0_level2_quad_clean.evt
Size (bytes)349,744,320100,013,760
Size333.5 MB 95.4 MB
Events in quadrant A3,054,301671,306
Events in quadrant B2,868,668688,581
Events in quadrant C3,394,584650,756
Events in quadrant D3,167,051603,123

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125633
B0124022
C0137432
D0133702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5930170.286678%
B5930160.269815%
C5930490.826307%
D5930801.349073%

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 7213 5931 3 3 0.04% 0.05%
B 7213 5930 7 7 0.10% 0.12%
C 7213 5930 48 48 0.67% 0.81%
D 7213 5931 72 72 1.00% 1.21%

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 10 83 408811 2995.9 668 654 136.2
A 12 189 39412 284.49 668 654 136.2
A 7 3 16619 117.18 668 654 136.2
B 0 183 106040 805.77 664 644 130.8
B 0 229 78800 597.52 664 644 130.8
B 5 172 49647 374.64 664 644 130.8
C 3 9 450874 2980.99 646 651 151.0
C 15 214 245171 1619.0 646 651 151.0
C 9 236 119546 787.22 646 651 151.0
D 7 55 162236 1016.73 647 630 158.9
D 13 138 161172 1010.03 647 630 158.9
D 13 249 113176 708.07 647 630 158.9

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