ASTROSAT CZTI

Data Quality Report

Orbit 57349

Creation date: 2026-05-04T22:21:09.582004
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_102T01_9000006572_57349cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57349cztM0_level2_quad_clean.evt
Size (bytes)395,363,52086,578,560
Size377.0 MB 82.6 MB
Events in quadrant A2,801,223572,301
Events in quadrant B2,850,252614,196
Events in quadrant C4,548,313516,481
Events in quadrant D3,961,602493,456

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126581
B0127771
C0178811
D0160101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6085540.887428%
B6086560.920145%
C60863585.882353%
D60862273.729872%

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 7553 6354 15 15 0.20% 0.24%
B 7554 6355 8 8 0.11% 0.13%
C 7554 6355 276 276 3.65% 4.34%
D 7554 6355 166 166 2.20% 2.61%

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 69110 408.21 675 657 167.7
A 3 14 36710 215.0 675 657 167.7
A 6 162 26370 153.34 675 657 167.7
B 7 252 98575 698.29 660 635 140.3
B 0 199 66422 469.04 660 635 140.3
B 0 213 20727 143.25 660 635 140.3
C 15 224 1159449 6809.12 624 617 170.2
C 6 223 397364 2331.22 624 617 170.2
C 12 252 284646 1668.91 624 617 170.2
D 2 249 635424 3486.76 638 607 182.1
D 8 240 434590 2383.67 638 607 182.1
D 2 120 99374 542.48 638 607 182.1

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