ASTROSAT CZTI

Data Quality Report

Orbit 53999

Creation date: 2025-09-23T15:16:57.638933
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_53999cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53999cztM0_level2_quad_clean.evt
Size (bytes)760,953,600120,216,960
Size725.7 MB 114.6 MB
Events in quadrant A4,297,041811,832
Events in quadrant B5,241,332871,990
Events in quadrant C9,390,430731,504
Events in quadrant D8,559,006614,407

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192460
B0217290
C0340520
D0318490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87841051.195355%
B87853654.154809%
C87858489.652817%
D8784148916.951275%

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 8784 8784 92 92 1.05% 1.05%
B 8785 8785 211 211 2.40% 2.40%
C 8785 8785 840 840 9.56% 9.56%
D 8784 8784 1493 1493 17.00% 17.00%

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 15 174 423896 1859.96 920 896 227.4
A 0 8 96682 421.18 920 896 227.4
A 14 239 40827 175.58 920 896 227.4
B 5 250 1120663 5744.69 916 883 194.9
B 7 0 154667 788.94 916 883 194.9
B 5 185 64203 324.84 916 883 194.9
C 10 171 2956501 12432.96 876 869 237.7
C 1 241 819476 3443.5 876 869 237.7
C 14 80 800898 3365.35 876 869 237.7
D 8 176 3695811 16134.79 812 777 229.0
D 3 12 531818 2318.85 812 777 229.0
D 6 239 206643 898.94 812 777 229.0

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