ASTROSAT CZTI

Data Quality Report

Orbit 52570

Creation date: 2025-06-17T07:06:36.434988
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_52570cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52570cztM0_level2_quad_clean.evt
Size (bytes)694,848,96086,299,200
Size662.7 MB 82.3 MB
Events in quadrant A3,402,542609,080
Events in quadrant B7,229,331583,648
Events in quadrant C4,253,388576,949
Events in quadrant D10,341,833397,723

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149462
B0258922
C0174242
D0351562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63811682.632816%
B6381104916.439430%
C63813415.343990%
D6381219334.367654%

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 7591 6382 119 119 1.57% 1.86%
B 7591 6382 833 833 10.97% 13.05%
C 7590 6381 265 265 3.49% 4.15%
D 7591 6382 2177 2177 28.68% 34.11%

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 5 243 446124 2689.83 659 644 165.6
A 8 249 80001 479.16 659 644 165.6
A 13 248 61153 365.36 659 644 165.6
B 10 254 2705375 19872.14 642 619 136.1
B 7 0 1117881 8208.65 642 619 136.1
B 10 44 272805 1999.78 642 619 136.1
C 15 248 1068403 5947.77 642 633 179.5
C 15 224 328651 1827.15 642 633 179.5
C 13 3 156828 870.05 642 633 179.5
D 6 42 4235337 26363.48 554 529 160.6
D 2 62 929368 5782.42 554 529 160.6
D 8 176 900572 5603.15 554 529 160.6

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