ASTROSAT CZTI

Data Quality Report

Orbit 52230

Creation date: 2025-06-23T12:22:17.717540
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/AS1C09_011T08_9000006472_52230cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52230cztM0_level2_quad_clean.evt
Size (bytes)2,134,517,760226,068,480
Size2.0 GB 215.6 MB
Events in quadrant A10,888,0731,644,459
Events in quadrant B16,327,4931,655,606
Events in quadrant C23,353,3971,225,110
Events in quadrant D26,989,5331,016,413

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459688
B06161422
C08270313
D09336826

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188725272.792497%
B18869194810.323812%
C18872518427.469267%
D18872636933.748410%

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 20444 18878 454 454 2.22% 2.40%
B 20444 18874 1527 1527 7.47% 8.09%
C 20444 18875 4714 4714 23.06% 24.97%
D 20445 18873 6086 6086 29.77% 32.25%

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 4 249 878117 1823.94 1938 1887 480.4
A 12 3 865186 1797.02 1938 1887 480.4
A 11 3 249691 515.82 1938 1887 480.4
B 5 32 5101742 13088.3 1857 1793 389.7
B 10 254 1110479 2845.29 1857 1793 389.7
B 4 81 551340 1410.33 1857 1793 389.7
C 15 224 12661344 28064.33 1633 1619 451.1
C 15 147 934203 2067.37 1633 1619 451.1
C 2 239 721592 1596.05 1633 1619 451.1
D 12 2 6729479 14801.85 1558 1484 454.5
D 15 93 6134181 13492.17 1558 1484 454.5
D 8 176 2522896 5547.2 1558 1484 454.5

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