ASTROSAT CZTI

Data Quality Report

Orbit 06645

Creation date: 2024-06-27T15:09:48.964319
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/AS1A02_189T01_9000000902_06645cztM0_level2.evt modeM0/AS1A02_189T01_9000000902_06645cztM0_level2_quad_clean.evt
Size (bytes)498,712,32098,691,840
Size475.6 MB 94.1 MB
Events in quadrant A3,325,559640,544
Events in quadrant B3,051,931658,944
Events in quadrant C2,951,765645,110
Events in quadrant D5,322,910580,910

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142522
B0138491
C0137871
D0204981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6640220.331325%
B6640170.256024%
C6640420.632530%
D664073511.069277%

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 7795 6641 9 9 0.12% 0.14%
B 7795 6641 2 2 0.03% 0.03%
C 7795 6641 27 27 0.35% 0.41%
D 7795 6641 553 553 7.09% 8.33%

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 8 15 384495 2581.01 739 723 148.7
A 15 239 85893 572.8 739 723 148.7
A 0 226 7213 43.64 739 723 148.7
B 4 170 70200 490.85 754 733 141.5
B 0 214 16519 111.54 754 733 141.5
B 12 111 13717 91.74 754 733 141.5
C 9 247 130881 787.6 719 721 165.3
C 1 16 7568 41.43 719 721 165.3
C 10 22 6518 35.08 719 721 165.3
D 2 33 1672764 10358.51 665 642 161.4
D 2 152 431283 2667.75 665 642 161.4
D 8 195 282901 1748.55 665 642 161.4

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