ASTROSAT CZTI

Data Quality Report

Orbit 51237

Creation date: 2025-03-20T12:19:34.009366
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/AS1C07_001T01_9000006454_51237cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51237cztM0_level2_quad_clean.evt
Size (bytes)652,285,44091,370,880
Size622.1 MB 87.1 MB
Events in quadrant A7,195,307530,597
Events in quadrant B5,733,957627,027
Events in quadrant C5,864,772575,539
Events in quadrant D4,813,704547,915

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306534571
B0247942903
C0254423145
D0216612336

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01588
B01562
C01587
D01606

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6811109016.003524%
B693882811.934275%
C694670010.077743%
D70154626.585887%

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 8598 7267 764 764 8.89% 10.51%
B 8598 7343 490 490 5.70% 6.67%
C 8599 7352 447 447 5.20% 6.08%
D 8599 7425 237 237 2.76% 3.19%

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 8 26 2198227 12822.41 683 664 171.4
A 12 3 1101110 6420.92 683 664 171.4
A 12 80 451633 2631.33 683 664 171.4
B 5 185 703267 4643.47 708 683 151.3
B 5 255 670266 4425.36 708 683 151.3
B 10 254 408984 2698.52 708 683 151.3
C 4 12 1297942 6979.07 683 678 185.9
C 1 60 430668 2313.28 683 678 185.9
C 12 247 320866 1722.56 683 678 185.9
D 2 62 816911 4086.46 701 674 199.7
D 10 172 436349 2181.19 701 674 199.7
D 2 207 265797 1327.33 701 674 199.7

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