ASTROSAT CZTI

Data Quality Report

Orbit 20240322_A13_034T01_9000006134_level2

Creation date: 2024-03-23T10:07:50.404451
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/AS1A13_034T01_9000006134cztM0_level2.fits modeM0/AS1A13_034T01_9000006134cztM0_level2_quad_clean.evt
Size (bytes)459,889,920476,948,160
Size438.6 MB 454.9 MB
Events in quadrant A2,756,5182,995,872
Events in quadrant B2,222,1882,276,408
Events in quadrant C2,864,0562,937,242
Events in quadrant D2,395,5142,557,073

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010860
B010860
C010860
D010860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01769370
B02817700
C01109270
D01425700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5358519263.594289%
B535852239441.791546%
C535854920.918167%
D5358529145.438089%

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 58659 53586 0 0 0.00% 0.00%
B 58659 53503 0 0 0.00% 0.00%
C 58659 53583 0 0 0.00% 0.00%
D 58659 53542 0 0 0.00% 0.00%

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 7 110 2244 8.65 719 672 181.8
A 15 236 2194 8.37 719 672 181.8
A 0 29 2146 8.11 719 672 181.8
B 2 9 2049 12.85 587 557 116.1
B 2 8 1712 9.95 587 557 116.1
B 3 17 1593 8.92 587 557 116.1
C 3 202 2248 7.93 755 700 195.3
C 1 81 2223 7.8 755 700 195.3
C 3 203 2179 7.57 755 700 195.3
D 8 176 2038 7.41 688 624 190.9
D 12 6 1732 5.8 688 624 190.9
D 10 189 1728 5.78 688 624 190.9

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