ASTROSAT CZTI

Data Quality Report

Orbit 50807

Creation date: 2025-02-18T15:15:10.872112
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_9000006450_50807cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50807cztM0_level2_quad_clean.evt
Size (bytes)1,597,055,040255,888,000
Size1.5 GB 244.0 MB
Events in quadrant A10,983,9161,722,545
Events in quadrant B11,804,3571,864,811
Events in quadrant C17,604,1151,428,507
Events in quadrant D17,242,0001,407,759

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459444
B0486264
C0654484
D0647424

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192006353.307292%
B192018704.531014%
C19201286314.910682%
D19201219311.421280%

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 20535 19200 333 333 1.62% 1.73%
B 20536 19202 374 374 1.82% 1.95%
C 20536 19202 1887 1887 9.19% 9.83%
D 20536 19202 1657 1657 8.07% 8.63%

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 80 940608 1860.4 2054 2001 504.5
A 4 3 356488 702.63 2054 2001 504.5
A 4 249 269667 530.54 2054 2001 504.5
B 4 206 1901867 4404.38 2025 1953 431.4
B 8 128 727846 1682.77 2025 1953 431.4
B 7 0 248993 572.69 2025 1953 431.4
C 5 10 2838864 5575.34 1872 1860 508.8
C 4 210 2411881 4736.22 1872 1860 508.8
C 15 147 873777 1713.51 1872 1860 508.8
D 7 126 1762833 3304.0 1911 1846 533.0
D 2 216 1092553 2046.41 1911 1846 533.0
D 2 249 1053492 1973.12 1911 1846 533.0

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