ASTROSAT CZTI

Data Quality Report

Orbit 57926

Creation date: 2026-06-12T19:12:22.953376
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_125T11_9000006582_57926cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57926cztM0_level2_quad_clean.evt
Size (bytes)476,942,40094,023,360
Size454.8 MB 89.7 MB
Events in quadrant A2,887,098637,078
Events in quadrant B5,522,210590,016
Events in quadrant C4,591,608588,499
Events in quadrant D4,132,768563,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135811
B0209741
C0182983
D0169251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6701540.805850%
B670299114.786631%
C67013625.402179%
D67012303.432324%

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 7486 6701 0 0 0.00% 0.00%
B 7487 6702 844 844 11.27% 12.59%
C 7486 6701 312 312 4.17% 4.66%
D 7485 6700 171 171 2.28% 2.55%

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 3 14 24995 135.54 724 704 179.2
A 3 31 22449 121.34 724 704 179.2
A 7 64 18624 99.99 724 704 179.2
B 3 238 2581305 18087.17 670 647 142.7
B 7 252 39847 274.74 670 647 142.7
B 5 185 34718 238.79 670 647 142.7
C 15 224 1112923 5979.11 681 676 186.0
C 14 254 394579 2117.51 681 676 186.0
C 2 12 170206 911.34 681 676 186.0
D 12 110 653711 3325.85 696 663 196.4
D 8 160 219353 1113.75 696 663 196.4
D 2 31 155498 788.54 696 663 196.4

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