ASTROSAT CZTI

Data Quality Report

Orbit 56682

Creation date: 2026-03-21T01:59:32.897885
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_56682cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56682cztM0_level2_quad_clean.evt
Size (bytes)578,206,08087,721,920
Size551.4 MB 83.7 MB
Events in quadrant A8,745,674480,626
Events in quadrant B2,951,112664,016
Events in quadrant C5,838,216530,519
Events in quadrant D3,378,890541,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303641
B0133351
C0219188
D0147191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6310174827.702060%
B6310651.030111%
C630965710.413695%
D63091071.695990%

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 7460 6311 1462 1462 19.60% 23.17%
B 7460 6311 11 11 0.15% 0.17%
C 7459 6310 731 731 9.80% 11.58%
D 7459 6310 91 91 1.22% 1.44%

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 10 251 5027795 33591.43 602 587 149.7
A 8 26 585692 3909.63 602 587 149.7
A 3 14 353261 2356.54 602 587 149.7
B 10 247 97063 675.09 665 639 142.8
B 0 171 94054 654.02 665 639 142.8
B 8 128 40681 280.34 665 639 142.8
C 15 230 3108276 18271.82 614 607 170.1
C 6 223 92718 541.57 614 607 170.1
C 14 96 56937 331.2 614 607 170.1
D 2 249 474748 2652.47 633 604 178.8
D 5 173 56196 310.99 633 604 178.8
D 3 12 53826 297.74 633 604 178.8

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