ASTROSAT CZTI

Data Quality Report

Orbit 15931

Creation date: 2024-06-27T17:15:15.710952
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/AS1A04_104T03_9000002348_15931cztM0_level2.evt modeM0/AS1A04_104T03_9000002348_15931cztM0_level2_quad_clean.evt
Size (bytes)472,273,92087,647,040
Size450.4 MB 83.6 MB
Events in quadrant A3,722,224549,662
Events in quadrant B3,439,127563,076
Events in quadrant C3,306,909540,010
Events in quadrant D3,374,608529,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150403
B0143792
C0140222
D0143802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6771560.827057%
B6771721.063358%
C6771841.240585%
D6771681.004283%

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 7767 6773 1 1 0.01% 0.01%
B 7767 6772 8 8 0.10% 0.12%
C 7767 6772 0 0 0.00% 0.00%
D 7767 6773 39 39 0.50% 0.58%

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 15 239 482488 2806.91 842 826 171.6
A 0 226 7314 37.81 842 826 171.6
A 12 194 6216 31.41 842 826 171.6
B 4 216 69666 423.91 841 822 162.4
B 4 48 41667 251.51 841 822 162.4
B 12 111 19179 113.04 841 822 162.4
C 14 238 123315 653.36 802 809 187.5
C 3 233 56549 297.28 802 809 187.5
C 13 61 5482 24.92 802 809 187.5
D 15 0 201591 1006.39 815 790 199.5
D 13 169 26618 129.45 815 790 199.5
D 2 234 26514 128.93 815 790 199.5

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