ASTROSAT CZTI

Data Quality Report

Orbit 55411

Creation date: 2025-12-26T11:37:50.904347
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_099T01_9000006536_55411cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55411cztM0_level2_quad_clean.evt
Size (bytes)1,973,756,160224,758,080
Size1.8 GB 214.3 MB
Events in quadrant A11,574,0281,639,524
Events in quadrant B8,598,0301,817,771
Events in quadrant C9,835,8981,603,990
Events in quadrant D41,593,699442,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0482513
B0398033
C0438083
D013658931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188699795.188404%
B188693551.881393%
C188705612.972973%
D188661373272.787024%

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 19920 18872 627 627 3.15% 3.32%
B 19920 18872 34 34 0.17% 0.18%
C 19920 18872 362 362 1.82% 1.92%
D 19920 18869 13430 13430 67.42% 71.17%

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 4 159 2565434 5379.51 1941 1891 476.5
A 0 8 897632 1879.68 1941 1891 476.5
A 12 3 198580 412.75 1941 1891 476.5
B 5 185 199499 477.85 1950 1876 413.6
B 5 236 183528 439.23 1950 1876 413.6
B 0 183 125665 299.32 1950 1876 413.6
C 13 3 925332 1779.09 1903 1880 519.1
C 9 38 611342 1174.17 1903 1880 519.1
C 10 64 173073 329.81 1903 1880 519.1
D 11 129 36159115 129224.44 989 946 279.8
D 11 176 597245 2131.09 989 946 279.8
D 2 249 244904 871.87 989 946 279.8

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