ASTROSAT CZTI

Data Quality Report

Orbit 55452

Creation date: 2025-12-28T07:46:05.090912
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_55452cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55452cztM0_level2_quad_clean.evt
Size (bytes)795,464,64099,169,920
Size758.6 MB 94.6 MB
Events in quadrant A4,197,056727,074
Events in quadrant B4,137,285784,943
Events in quadrant C3,532,431706,327
Events in quadrant D16,960,483230,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01622
B01624
C01622
D01612

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018958409
B018442289
C017072356
D0572881541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79711952.446368%
B79841561.953908%
C7976190.238215%
D7902542768.678815%

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 8086 8016 159 159 1.97% 1.98%
B 8081 8020 114 114 1.41% 1.42%
C 8068 8011 15 15 0.19% 0.19%
D 7968 7902 5196 5196 65.21% 65.76%

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 8 601761 2927.27 821 797 205.3
A 4 159 279208 1356.13 821 797 205.3
A 3 78 66852 321.75 821 797 205.3
B 0 171 253724 1424.28 823 791 177.6
B 12 32 171389 960.65 823 791 177.6
B 5 236 110638 618.56 823 791 177.6
C 13 3 113535 505.48 817 809 223.0
C 9 38 59511 263.23 817 809 223.0
C 12 252 52534 231.94 817 809 223.0
D 2 62 12661207 94558.09 463 440 133.9
D 6 239 1254203 9363.84 463 440 133.9
D 2 153 650284 4853.42 463 440 133.9

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