ASTROSAT CZTI

Data Quality Report

Orbit 56613

Creation date: 2026-03-16T10:28:48.272774
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_56613cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56613cztM0_level2_quad_clean.evt
Size (bytes)564,217,920124,467,840
Size538.1 MB 118.7 MB
Events in quadrant A4,078,705822,809
Events in quadrant B4,583,761877,421
Events in quadrant C5,070,204759,888
Events in quadrant D6,466,638695,351

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189021
B0200811
C0216951
D0255681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88331281.449111%
B88332572.909544%
C88343604.075164%
D88345776.531583%

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 9083 8834 56 56 0.62% 0.63%
B 9083 8834 74 74 0.81% 0.84%
C 9084 8835 186 186 2.05% 2.11%
D 9084 8835 479 479 5.27% 5.42%

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 13 248 171244 723.66 959 935 235.3
A 0 8 93086 391.56 959 935 235.3
A 8 249 21202 86.12 959 935 235.3
B 5 185 263146 1294.17 954 921 202.6
B 10 247 181619 891.8 954 921 202.6
B 0 231 155189 761.36 954 921 202.6
C 15 219 704078 2812.57 924 914 250.0
C 13 3 181061 720.57 924 914 250.0
C 12 249 157002 624.33 924 914 250.0
D 6 239 769264 3048.98 906 865 252.0
D 8 129 624733 2475.48 906 865 252.0
D 10 199 480403 1902.79 906 865 252.0

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