ASTROSAT CZTI

Data Quality Report

Orbit 55589

Creation date: 2026-01-06T12:25:03.327955
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_021T06_9000006538_55589cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55589cztM0_level2_quad_clean.evt
Size (bytes)412,240,32088,061,760
Size393.1 MB 84.0 MB
Events in quadrant A4,244,491552,662
Events in quadrant B2,613,930627,777
Events in quadrant C4,394,991529,681
Events in quadrant D3,517,330517,552

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172621
B0127921
C0176532
D0153071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62843856.126671%
B6284200.318269%
C62834036.414133%
D62841181.877785%

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 7324 6285 337 337 4.60% 5.36%
B 7324 6285 2 2 0.03% 0.03%
C 7323 6284 371 371 5.07% 5.90%
D 7324 6285 142 142 1.94% 2.26%

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 12 115 1337096 8679.54 623 608 154.0
A 0 8 245991 1593.59 623 608 154.0
A 8 249 154373 998.59 623 608 154.0
B 4 169 29445 213.19 631 607 135.3
B 5 172 23191 166.95 631 607 135.3
B 10 247 19657 140.83 631 607 135.3
C 9 38 1195273 7171.26 601 594 166.6
C 12 252 237464 1421.85 601 594 166.6
C 12 2 204282 1222.67 601 594 166.6
D 11 129 321801 1857.24 607 578 173.0
D 6 42 249404 1438.65 607 578 173.0
D 8 160 210203 1212.0 607 578 173.0

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