ASTROSAT CZTI

Data Quality Report

Orbit 56713

Creation date: 2026-03-23T03:38:53.180873
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_083T06_9000006558_56713cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56713cztM0_level2_quad_clean.evt
Size (bytes)509,886,720103,184,640
Size486.3 MB 98.4 MB
Events in quadrant A5,072,425655,149
Events in quadrant B3,282,488739,560
Events in quadrant C6,224,124605,642
Events in quadrant D3,749,161634,271

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201762
B0150492
C0235492
D0163623

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70275788.225416%
B7027921.309236%
C702784612.039277%
D70261201.707942%

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 7727 7028 465 465 6.02% 6.62%
B 7727 7028 23 23 0.30% 0.33%
C 7727 7028 742 742 9.60% 10.56%
D 7726 7027 106 106 1.37% 1.51%

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 62 1685932 9237.26 726 709 182.4
A 10 251 362708 1984.24 726 709 182.4
A 8 26 109383 595.68 726 709 182.4
B 10 247 94554 585.66 741 712 160.2
B 0 213 68410 422.5 741 712 160.2
B 10 16 52232 321.53 741 712 160.2
C 13 3 2112389 11104.38 685 679 190.2
C 15 230 1011949 5317.74 685 679 190.2
C 14 96 183817 963.03 685 679 190.2
D 14 49 375794 1819.87 722 688 206.1
D 2 249 139488 673.4 722 688 206.1
D 8 240 135268 652.93 722 688 206.1

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