ASTROSAT CZTI

Data Quality Report

Orbit 54470

Creation date: 2025-10-23T04:47:23.495674
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/AS1A14_126T19_9000006518_54470cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54470cztM0_level2_quad_clean.evt
Size (bytes)716,238,72085,190,400
Size683.1 MB 81.2 MB
Events in quadrant A2,989,749636,398
Events in quadrant B4,023,491653,436
Events in quadrant C5,123,347576,284
Events in quadrant D13,857,327246,832

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138582
B0165642
C0199982
D0458192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6686691.032007%
B66873795.667713%
C66875698.509047%
D6687411061.462539%

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 8586 6688 4 4 0.05% 0.06%
B 8587 6687 242 242 2.82% 3.62%
C 8587 6688 424 424 4.94% 6.34%
D 8586 6686 4009 4009 46.69% 59.96%

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 3 53165 293.77 723 704 178.6
A 4 249 39204 215.59 723 704 178.6
A 8 6 31773 173.98 723 704 178.6
B 5 185 680696 4523.26 700 675 150.3
B 0 213 368577 2447.15 700 675 150.3
B 10 247 85201 562.24 700 675 150.3
C 12 2 998763 5343.08 684 678 186.8
C 4 5 705427 3772.75 684 678 186.8
C 7 64 353992 1891.41 684 678 186.8
D 8 176 9279100 67905.71 473 449 136.6
D 2 172 2121499 15522.88 473 449 136.6
D 10 199 334003 2441.11 473 449 136.6

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