ASTROSAT CZTI

Data Quality Report

Orbit 38682

Creation date: 2024-06-27T21:55:03.846345
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/AS1A12_054T01_9000005392_38682cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38682cztM0_level2_quad_clean.evt
Size (bytes)570,162,24073,920,960
Size543.7 MB 70.5 MB
Events in quadrant A2,789,044589,306
Events in quadrant B7,873,291345,041
Events in quadrant C2,673,357568,523
Events in quadrant D7,372,260376,769

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112343
B0268042
C0109642
D0254482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5114330.645287%
B5114239746.871334%
C511460.117325%
D5114165832.420806%

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 6998 5115 24 24 0.34% 0.47%
B 6998 5115 2179 2179 31.14% 42.60%
C 6998 5115 6 6 0.09% 0.12%
D 6998 5115 1448 1448 20.69% 28.31%

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 386897 3261.78 584 572 118.4
A 15 174 67957 568.94 584 572 118.4
A 13 248 66549 557.05 584 572 118.4
B 4 251 5567688 55792.4 514 500 99.8
B 4 171 258847 2589.06 514 500 99.8
B 12 111 12440 119.66 514 500 99.8
C 15 214 209742 1583.43 567 570 132.1
C 14 254 91110 685.39 567 570 132.1
C 1 23 80220 602.95 567 570 132.1
D 12 227 3759488 31157.39 483 468 120.6
D 10 118 537467 4451.02 483 468 120.6
D 5 222 458819 3799.13 483 468 120.6

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