ASTROSAT CZTI

Data Quality Report

Orbit 58119

Creation date: 2026-06-25T17:10:32.224373
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_042T02_9000006586_58119cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58119cztM0_level2_quad_clean.evt
Size (bytes)586,437,12080,991,360
Size559.3 MB 77.2 MB
Events in quadrant A2,822,060612,628
Events in quadrant B4,286,051624,958
Events in quadrant C2,922,769575,850
Events in quadrant D11,213,651222,793

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124211
B0165311
C0127271
D0372761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5955781.309824%
B59554427.422334%
C59551061.780017%
D5956380163.817999%

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 7095 5956 7 7 0.10% 0.12%
B 7095 5956 338 338 4.76% 5.67%
C 7095 5956 53 53 0.75% 0.89%
D 7096 5957 3425 3425 48.27% 57.50%

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 10 251 70294 408.34 694 675 170.5
A 11 3 37120 213.77 694 675 170.5
A 3 245 16985 95.67 694 675 170.5
B 10 128 1394872 9741.02 665 641 143.1
B 0 153 34258 234.87 665 641 143.1
B 5 185 30156 206.21 665 641 143.1
C 12 2 180202 991.58 663 656 181.1
C 1 16 80119 438.85 663 656 181.1
C 11 244 27581 148.7 663 656 181.1
D 12 110 8876989 62149.79 500 479 142.8
D 7 222 152350 1063.34 500 479 142.8
D 2 249 46368 321.3 500 479 142.8

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