ASTROSAT CZTI

Data Quality Report

Orbit 56059

Creation date: 2026-02-09T11:25:31.757058
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_083T03_9000006548_56059cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56059cztM0_level2_quad_clean.evt
Size (bytes)638,550,72087,575,040
Size609.0 MB 83.5 MB
Events in quadrant A12,540,567289,300
Events in quadrant B3,719,200689,370
Events in quadrant C3,253,971615,651
Events in quadrant D3,584,149573,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0419743
B0161023
C0151323
D0159923

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6937388455.989621%
B69371612.320888%
C6937690.994666%
D6937610.879343%

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 7587 6938 3775 3775 49.76% 54.41%
B 7587 6939 44 44 0.58% 0.63%
C 7587 6939 39 39 0.51% 0.56%
D 7587 6939 44 44 0.58% 0.63%

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 10107404 87112.94 463 452 116.0
A 4 249 196113 1686.42 463 452 116.0
A 15 32 148813 1278.74 463 452 116.0
B 5 172 458115 2982.78 720 693 153.4
B 10 247 150130 974.46 720 693 153.4
B 0 213 52477 337.68 720 693 153.4
C 13 3 171932 892.94 701 694 191.8
C 12 252 119523 619.65 701 694 191.8
C 15 230 81826 423.07 701 694 191.8
D 11 129 314081 1616.95 692 662 193.8
D 6 42 209538 1077.6 692 662 193.8
D 2 31 59395 303.01 692 662 193.8

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