ASTROSAT CZTI

Data Quality Report

Orbit 23229

Creation date: 2024-06-27T18:51:35.209470
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/AS1A08_009T01_9000003434_23229cztM0_level2.evt modeM0/AS1A08_009T01_9000003434_23229cztM0_level2_quad_clean.evt
Size (bytes)483,451,20078,992,640
Size461.1 MB 75.3 MB
Events in quadrant A3,146,405501,933
Events in quadrant B3,051,195508,436
Events in quadrant C3,069,325487,366
Events in quadrant D4,959,025466,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133711
B0129161
C0129241
D0189881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6119520.849812%
B6120440.718954%
C6120851.388889%
D61205078.284314%

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 7254 6120 0 0 0.00% 0.00%
B 7255 6120 1 1 0.01% 0.02%
C 7255 6121 2 2 0.03% 0.03%
D 7255 6121 437 437 6.02% 7.14%

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 13 252 159958 1017.38 775 759 156.5
A 13 254 9794 57.74 775 759 156.5
A 0 226 6818 38.72 775 759 156.5
B 0 190 34532 234.25 765 748 144.2
B 12 111 16674 110.43 765 748 144.2
B 11 111 15067 99.28 765 748 144.2
C 14 238 118294 683.91 739 743 171.9
C 0 10 54762 314.28 739 743 171.9
C 7 247 15200 84.11 739 743 171.9
D 1 52 682815 3787.93 736 715 180.1
D 12 233 605708 3359.73 736 715 180.1
D 2 82 536773 2976.91 736 715 180.1

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