ASTROSAT CZTI

Data Quality Report

Orbit 08725

Creation date: 2024-06-27T15:36:19.141585
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_132T01_9000001212_08725cztM0_level2.evt modeM0/AS1A02_132T01_9000001212_08725cztM0_level2_quad_clean.evt
Size (bytes)438,448,32070,810,560
Size418.1 MB 67.5 MB
Events in quadrant A3,332,523422,393
Events in quadrant B3,218,407434,000
Events in quadrant C3,082,086428,287
Events in quadrant D3,210,290412,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140923
B0137662
C0133142
D0138612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6400821.281250%
B6400741.156250%
C6400440.687500%
D6400580.906250%

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 7580 6400 13 13 0.17% 0.20%
B 7580 6400 2 2 0.03% 0.03%
C 7580 6400 2 2 0.03% 0.03%
D 7580 6400 17 17 0.22% 0.27%

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 13 251 242217 1489.6 802 783 162.1
A 0 226 7692 42.63 802 783 162.1
A 12 194 6815 37.22 802 783 162.1
B 15 255 45873 295.36 810 793 152.6
B 4 173 28929 184.34 810 793 152.6
B 12 111 16001 99.64 810 793 152.6
C 12 4 6845 33.41 786 790 181.2
C 13 61 5892 28.15 786 790 181.2
C 14 234 4626 21.17 786 790 181.2
D 1 52 116477 603.58 778 759 191.7
D 2 14 60562 311.93 778 759 191.7
D 7 71 34208 174.47 778 759 191.7

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