ASTROSAT CZTI

Data Quality Report

Orbit 51305

Creation date: 2025-03-24T02:05:04.563514
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_001T03_9000006456_51305cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51305cztM0_level2_quad_clean.evt
Size (bytes)758,203,20085,089,600
Size723.1 MB 81.1 MB
Events in quadrant A5,164,575623,222
Events in quadrant B4,436,035662,218
Events in quadrant C11,808,079321,220
Events in quadrant D6,164,247524,971

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197542
B0176782
C0394552
D0227252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63791742.727700%
B63793996.254899%
C6378344053.935403%
D63786299.862026%

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 8659 6381 90 90 1.04% 1.41%
B 8659 6381 211 211 2.44% 3.31%
C 8658 6380 3007 3007 34.73% 47.13%
D 8658 6380 576 576 6.65% 9.03%

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 12 3 1169707 6886.05 686 668 169.8
A 12 250 527170 3101.28 686 668 169.8
A 4 3 276279 1623.44 686 668 169.8
B 5 172 472903 3279.64 678 655 144.0
B 8 128 376766 2611.99 678 655 144.0
B 5 185 205013 1419.21 678 655 144.0
C 4 12 9174714 63054.55 525 519 145.5
C 3 233 123210 843.26 525 519 145.5
C 13 3 103783 709.74 525 519 145.5
D 8 176 1622183 9145.94 634 611 177.3
D 3 12 1317130 7425.39 634 611 177.3
D 12 2 120629 676.92 634 611 177.3

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