ASTROSAT CZTI

Data Quality Report

Orbit 54071

Creation date: 2025-09-26T09:21:50.298165
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_041T01_9000006510_54071cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54071cztM0_level2_quad_clean.evt
Size (bytes)598,135,680126,383,040
Size570.4 MB 120.5 MB
Events in quadrant A4,540,357828,521
Events in quadrant B4,575,645899,333
Events in quadrant C5,464,718774,868
Events in quadrant D6,875,028710,967

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197490
B0201830
C0227110
D0267370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8830921.041903%
B88311782.015627%
C88313844.348318%
D88314835.469369%

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 8830 8830 89 89 1.01% 1.01%
B 8831 8831 98 98 1.11% 1.11%
C 8830 8830 398 398 4.51% 4.51%
D 8831 8831 499 499 5.65% 5.65%

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 15 174 366294 1571.13 938 912 232.6
A 14 235 184008 787.31 938 912 232.6
A 0 8 149027 636.89 938 912 232.6
B 7 252 296274 1479.56 937 906 199.6
B 10 28 154538 769.57 937 906 199.6
B 5 236 101204 502.41 937 906 199.6
C 15 233 1519084 6097.5 913 904 249.0
C 12 252 69036 273.64 913 904 249.0
C 14 254 67557 267.7 913 904 249.0
D 2 172 1061283 4204.53 897 856 252.2
D 8 176 998024 3953.71 897 856 252.2
D 12 2 469780 1859.26 897 856 252.2

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