ASTROSAT CZTI

Data Quality Report

Orbit 54580

Creation date: 2025-10-31T09:26:04.246780
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_127T09_9000006520_54580cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54580cztM0_level2_quad_clean.evt
Size (bytes)510,871,680111,870,720
Size487.2 MB 106.7 MB
Events in quadrant A6,529,437710,258
Events in quadrant B3,920,411781,581
Events in quadrant C3,984,053688,023
Events in quadrant D3,861,986656,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250300
B0173860
C0179020
D0174190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79184535.721142%
B7918961.212427%
C79181221.540793%
D7918230.290477%

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 7918 7918 397 397 5.01% 5.01%
B 7918 7918 56 56 0.71% 0.71%
C 7918 7918 86 86 1.09% 1.09%
D 7918 7918 18 18 0.23% 0.23%

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 3 14 1735949 8564.93 819 799 202.6
A 11 3 720915 3554.59 819 799 202.6
A 3 62 255226 1255.89 819 799 202.6
B 4 171 298642 1677.67 821 792 177.5
B 0 213 119321 667.63 821 792 177.5
B 10 14 95764 534.94 821 792 177.5
C 6 223 421106 1896.58 803 796 221.6
C 13 3 173123 777.6 803 796 221.6
C 14 254 130938 587.25 803 796 221.6
D 2 37 274273 1215.57 799 764 225.0
D 2 172 88787 391.21 799 764 225.0
D 2 120 76468 336.46 799 764 225.0

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