ASTROSAT CZTI

Data Quality Report

Orbit 53778

Creation date: 2025-09-06T19:12:26.221079
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_022T04_9000006506_53778cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53778cztM0_level2_quad_clean.evt
Size (bytes)862,824,96068,011,200
Size822.9 MB 64.9 MB
Events in quadrant A15,949,2254,097
Events in quadrant B3,716,435606,244
Events in quadrant C4,978,035540,788
Events in quadrant D6,808,518469,631

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0516851
B0156031
C0192471
D0245591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6277624399.458340%
B62773956.292815%
C62784857.725390%
D6278101616.183498%

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 6932 6278 6056 6056 87.36% 96.46%
B 6931 6277 170 170 2.45% 2.71%
C 6933 6279 448 448 6.46% 7.13%
D 6933 6279 1062 1062 15.32% 16.91%

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 63 14989619 264749.39 222 216 56.6
A 0 8 21998 384.72 222 216 56.6
A 4 249 16861 293.99 222 216 56.6
B 5 185 698156 4953.38 650 627 140.8
B 5 250 208552 1476.54 650 627 140.8
B 0 213 69380 488.24 650 627 140.8
C 15 224 1653937 9481.13 632 628 174.4
C 15 147 303431 1736.47 632 628 174.4
C 15 208 81365 463.0 632 628 174.4
D 6 127 1517795 8808.58 614 587 172.2
D 10 172 1510286 8764.99 614 587 172.2
D 1 241 287774 1667.35 614 587 172.2

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