ASTROSAT CZTI

Data Quality Report

Orbit 55159

Creation date: 2025-12-08T14:15:34.508701
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_022T16_9000006532_55159cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55159cztM0_level2_quad_clean.evt
Size (bytes)459,282,240110,001,600
Size438.0 MB 104.9 MB
Events in quadrant A4,412,005700,102
Events in quadrant B4,029,574762,255
Events in quadrant C4,175,827682,112
Events in quadrant D3,781,602647,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187420
B0179560
C0180110
D0170010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77393304.264117%
B77392883.721411%
C77391251.615196%
D7740520.671835%

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 7738 7738 163 163 2.11% 2.11%
B 7738 7738 94 94 1.21% 1.21%
C 7738 7738 70 70 0.90% 0.90%
D 7739 7739 7 7 0.09% 0.09%

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 78 1048902 5108.68 824 801 205.2
A 4 78 57140 274.61 824 801 205.2
A 0 8 32519 154.6 824 801 205.2
B 2 249 446837 2514.88 815 782 177.4
B 5 185 263276 1479.95 815 782 177.4
B 0 182 37621 207.7 815 782 177.4
C 13 3 451497 2050.22 803 798 219.8
C 1 16 166934 755.75 803 798 219.8
C 10 22 91421 412.24 803 798 219.8
D 2 249 273071 1207.26 806 772 225.6
D 3 12 81272 356.9 806 772 225.6
D 11 129 78790 345.9 806 772 225.6

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