ASTROSAT CZTI

Data Quality Report

Orbit 56728

Creation date: 2026-03-24T14:54:15.293550
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_083T05_9000006560_56728cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56728cztM0_level2_quad_clean.evt
Size (bytes)477,181,440102,723,840
Size455.1 MB 98.0 MB
Events in quadrant A4,832,906667,327
Events in quadrant B3,441,367727,163
Events in quadrant C5,211,831603,720
Events in quadrant D3,623,901615,623

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191292
B0155442
C0207952
D0161282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71233044.267865%
B71231271.782957%
C71236138.605924%
D7123520.730029%

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 7604 7125 218 218 2.87% 3.06%
B 7604 7125 51 51 0.67% 0.72%
C 7604 7125 514 514 6.76% 7.21%
D 7604 7125 51 51 0.67% 0.72%

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 1030285 5472.43 756 737 188.1
A 10 251 659969 3504.07 756 737 188.1
A 3 62 200222 1060.34 756 737 188.1
B 10 247 120874 735.09 757 729 163.4
B 4 206 103097 626.33 757 729 163.4
B 7 252 60603 366.33 757 729 163.4
C 15 230 874625 4485.94 710 699 194.8
C 13 3 606227 3108.23 710 699 194.8
C 1 12 424841 2177.16 710 699 194.8
D 2 207 321919 1535.68 738 702 209.2
D 2 252 146950 699.19 738 702 209.2
D 6 239 54801 258.64 738 702 209.2

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