ASTROSAT CZTI

Data Quality Report

Orbit 56562

Creation date: 2026-03-12T23:13:31.686188
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_56562cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56562cztM0_level2_quad_clean.evt
Size (bytes)550,149,12089,951,040
Size524.7 MB 85.8 MB
Events in quadrant A5,158,312550,795
Events in quadrant B3,493,550667,808
Events in quadrant C5,857,356534,415
Events in quadrant D5,349,538516,075

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199511
B0149591
C0219781
D0203571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A651585213.077513%
B6516941.442603%
C651677611.909147%
D65165919.069982%

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 7505 6516 764 764 10.18% 11.72%
B 7506 6517 52 52 0.69% 0.80%
C 7506 6517 687 687 9.15% 10.54%
D 7506 6517 508 508 6.77% 7.79%

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 0 12 1711422 10518.75 659 643 162.6
A 7 64 409049 2511.09 659 643 162.6
A 4 95 352835 2165.46 659 643 162.6
B 8 128 202576 1359.55 696 673 148.5
B 10 247 139164 932.55 696 673 148.5
B 4 21 103106 689.75 696 673 148.5
C 15 230 2684459 15218.54 644 637 176.4
C 13 3 181975 1028.27 644 637 176.4
C 12 249 147842 834.72 644 637 176.4
D 2 249 1645152 8960.13 648 616 183.5
D 2 31 303150 1648.33 648 616 183.5
D 8 129 262856 1428.79 648 616 183.5

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