ASTROSAT CZTI

Data Quality Report

Orbit 52612

Creation date: 2025-06-20T10:48:28.632926
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/AS1C09_011T06_9000006478_52612cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52612cztM0_level2_quad_clean.evt
Size (bytes)1,038,960,00065,589,120
Size990.8 MB 62.6 MB
Events in quadrant A3,076,072628,186
Events in quadrant B11,952,076333,744
Events in quadrant C14,758,498104,920
Events in quadrant D8,181,300474,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136791
B0399116
C0481811
D0287931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365480.754124%
B6365345054.202671%
C6365535184.069128%
D6365127820.078555%

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 7520 6366 11 11 0.15% 0.17%
B 7520 6366 2894 2894 38.48% 45.46%
C 7520 6365 4613 4613 61.34% 72.47%
D 7520 6366 1168 1168 15.53% 18.35%

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 3 14 144833 848.72 674 657 169.9
A 4 249 64734 377.2 674 657 169.9
A 4 3 30351 174.8 674 657 169.9
B 10 128 7096434 66272.83 507 491 107.1
B 10 254 2171864 20279.62 507 491 107.1
B 10 44 161887 1507.36 507 491 107.1
C 15 248 13220905 179609.86 255 251 73.6
C 13 3 253525 3440.87 255 251 73.6
C 2 12 45849 619.47 255 251 73.6
D 2 62 1837552 10509.43 609 583 174.8
D 8 176 1028442 5880.45 609 583 174.8
D 6 42 754856 4315.25 609 583 174.8

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