ASTROSAT CZTI

Data Quality Report

Orbit 17065

Creation date: 2024-06-27T17:31:33.556075
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/AS1T03_004T01_9000002532_17065cztM0_level2.evt modeM0/AS1T03_004T01_9000002532_17065cztM0_level2_quad_clean.evt
Size (bytes)530,320,32074,845,440
Size505.8 MB 71.4 MB
Events in quadrant A3,316,207468,793
Events in quadrant B3,400,205483,079
Events in quadrant C5,497,429438,448
Events in quadrant D3,413,933429,980

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136622
B0138772
C0210452
D0142452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6397520.812881%
B6397600.937940%
C63972223.470377%
D63971151.797718%

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 7758 6399 9 9 0.12% 0.14%
B 7758 6399 1 1 0.01% 0.02%
C 7758 6399 11 11 0.14% 0.17%
D 7758 6399 64 64 0.82% 1.00%

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 4 2 65919 388.37 845 831 167.6
A 0 226 7415 39.29 845 831 167.6
A 12 194 6233 32.23 845 831 167.6
B 4 216 22189 135.37 857 841 157.7
B 12 111 18189 110.01 857 841 157.7
B 11 111 15637 93.83 857 841 157.7
C 3 233 2187123 11737.42 804 811 186.3
C 14 238 127687 681.14 804 811 186.3
C 9 54 44769 235.99 804 811 186.3
D 10 70 274745 1409.43 806 785 194.4
D 8 0 24146 120.18 806 785 194.4
D 2 234 23688 117.83 806 785 194.4

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