ASTROSAT CZTI

Data Quality Report

Orbit 50580

Creation date: 2025-02-03T06:29:24.101395
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/AS1T05_239T01_9000006444_50580cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50580cztM0_level2_quad_clean.evt
Size (bytes)708,690,24090,898,560
Size675.9 MB 86.7 MB
Events in quadrant A6,120,169582,313
Events in quadrant B6,816,073617,910
Events in quadrant C5,906,328569,301
Events in quadrant D6,879,370521,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226472
B0248462
C0220962
D0251912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A660987513.239522%
B6609109516.568316%
C660979311.998790%
D660997414.737479%

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 7844 6609 732 732 9.33% 11.08%
B 7844 6610 590 590 7.52% 8.93%
C 7844 6610 617 617 7.87% 9.33%
D 7844 6610 939 939 11.97% 14.21%

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 4 249 1822642 10995.2 672 657 165.7
A 12 250 365115 2199.41 672 657 165.7
A 3 114 346769 2088.69 672 657 165.7
B 4 170 2081453 14785.49 669 648 140.7
B 5 172 790500 5612.42 669 648 140.7
B 7 0 532295 3777.7 669 648 140.7
C 15 196 947967 5158.01 664 660 183.7
C 15 195 946772 5151.51 664 660 183.7
C 13 3 277315 1506.36 664 660 183.7
D 8 246 2206422 12163.48 651 627 181.3
D 6 42 689586 3799.15 651 627 181.3
D 7 96 446327 2457.74 651 627 181.3

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