ASTROSAT CZTI

Data Quality Report

Orbit 54372

Creation date: 2025-10-17T11:00:42.929883
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_54372cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54372cztM0_level2_quad_clean.evt
Size (bytes)457,335,36086,644,800
Size436.1 MB 82.6 MB
Events in quadrant A2,768,195590,591
Events in quadrant B3,955,875600,419
Events in quadrant C4,731,007537,777
Events in quadrant D5,002,599471,731

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128671
B0162091
C0183241
D0192451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6060691.138614%
B60604667.689769%
C60603916.452145%
D606172111.895727%

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 7180 6061 29 29 0.40% 0.48%
B 7180 6061 262 262 3.65% 4.32%
C 7180 6061 392 392 5.46% 6.47%
D 7181 6062 611 611 8.51% 10.08%

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 0 8 141058 873.09 652 637 160.8
A 15 174 29180 177.47 652 637 160.8
A 13 254 18550 111.38 652 637 160.8
B 10 14 1142672 8523.44 625 603 134.0
B 5 185 149701 1112.74 625 603 134.0
B 7 0 42547 313.03 625 603 134.0
C 1 29 1711527 10158.49 611 605 168.4
C 12 2 248385 1471.18 611 605 168.4
C 13 3 102007 602.07 611 605 168.4
D 8 176 1247961 7415.89 592 567 168.2
D 2 120 479959 2850.04 592 567 168.2
D 4 238 446240 2649.57 592 567 168.2

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