ASTROSAT CZTI

Data Quality Report

Orbit 54057

Creation date: 2025-09-25T12:09:12.528565
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_54057cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54057cztM0_level2_quad_clean.evt
Size (bytes)571,461,120126,239,040
Size545.0 MB 120.4 MB
Events in quadrant A5,771,666779,877
Events in quadrant B5,051,603887,954
Events in quadrant C4,144,676801,702
Events in quadrant D5,492,649733,606

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238180
B0215410
C0191020
D0227640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89217107.958749%
B89213533.956955%
C8922460.515579%
D89222592.902937%

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 8921 8921 466 466 5.22% 5.22%
B 8921 8921 193 193 2.16% 2.16%
C 8922 8922 34 34 0.38% 0.38%
D 8922 8922 262 262 2.94% 2.94%

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 12 15 1718707 7662.27 909 888 224.2
A 15 174 344921 1534.55 909 888 224.2
A 0 8 81315 358.74 909 888 224.2
B 2 249 461174 2301.9 936 901 200.0
B 7 252 265981 1325.71 936 901 200.0
B 0 213 135986 675.58 936 901 200.0
C 15 177 194051 755.36 934 925 255.7
C 12 252 61774 237.99 934 925 255.7
C 13 3 61460 236.77 934 925 255.7
D 3 12 923351 3600.89 908 867 256.2
D 8 176 421384 1641.48 908 867 256.2
D 14 52 264284 1028.24 908 867 256.2

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