ASTROSAT CZTI

Data Quality Report

Orbit 51320

Creation date: 2025-03-25T03:06:50.624959
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/AS1C07_001T03_9000006456_51320cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51320cztM0_level2_quad_clean.evt
Size (bytes)795,677,76082,166,400
Size758.8 MB 78.4 MB
Events in quadrant A6,029,626588,071
Events in quadrant B4,558,976660,706
Events in quadrant C11,713,834294,833
Events in quadrant D6,665,606505,866

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223846
B0177742
C0390672
D0243522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62784126.562600%
B62783205.097165%
C6278356256.737815%
D627891914.638420%

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 7443 6279 324 324 4.35% 5.16%
B 7443 6279 166 166 2.23% 2.64%
C 7443 6278 3190 3190 42.86% 50.81%
D 7443 6278 812 812 10.91% 12.93%

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 12 3 2102268 12930.54 657 641 162.5
A 7 235 285940 1755.34 657 641 162.5
A 4 175 257831 1582.39 657 641 162.5
B 8 128 337919 2386.28 668 645 141.3
B 5 185 320726 2264.63 668 645 141.3
B 10 254 295958 2089.4 668 645 141.3
C 4 12 7136549 58885.94 438 434 121.2
C 15 1 1493186 12317.92 438 434 121.2
C 15 158 538977 4443.96 438 434 121.2
D 11 176 1424087 8250.59 623 600 172.5
D 2 216 727075 4210.68 623 600 172.5
D 7 80 656765 3803.16 623 600 172.5

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