ASTROSAT CZTI

Data Quality Report

Orbit 25289

Creation date: 2024-06-27T19:15:59.151830
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/AS1A09_022T01_9000003702_25289cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25289cztM0_level2_quad_clean.evt
Size (bytes)650,194,560115,441,920
Size620.1 MB 110.1 MB
Events in quadrant A8,790,736703,190
Events in quadrant B3,366,536802,392
Events in quadrant C3,337,956779,590
Events in quadrant D3,760,897761,937

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306420
B0141400
C0137730
D0152960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6433171526.659412%
B6433781.212498%
C64341201.865092%
D64341161.802922%

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 7598 6435 1408 1408 18.53% 21.88%
B 7598 6435 0 0 0.00% 0.00%
C 7599 6436 6 6 0.08% 0.09%
D 7599 6436 51 51 0.67% 0.79%

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 6 16 5790040 38093.77 770 755 152.0
A 15 173 18270 115.25 770 755 152.0
A 4 2 11056 67.78 770 755 152.0
B 15 33 66426 431.13 821 802 152.2
B 3 112 44062 284.21 821 802 152.2
B 0 229 40624 261.62 821 802 152.2
C 14 238 129307 691.5 806 812 185.8
C 9 54 47710 252.38 806 812 185.8
C 0 207 7611 36.59 806 812 185.8
D 8 195 236941 1215.7 815 791 194.3
D 1 52 187103 959.13 815 791 194.3
D 12 233 163342 836.81 815 791 194.3

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