ASTROSAT CZTI

Data Quality Report

Orbit 01271

Creation date: 2024-06-27T14:10:09.333512
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/AS1G04_011T02_9000000226_01271cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01271cztM0_level2_quad_clean.evt
Size (bytes)1,343,517,12092,839,680
Size1.3 GB 88.5 MB
Events in quadrant A7,392,269659,138
Events in quadrant B8,998,041653,970
Events in quadrant C7,541,294637,680
Events in quadrant D16,341,479419,432

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264863
B0311532
C0268892
D0535642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6300120.190476%
B6300731.158730%
C6300220.349206%
D6300369558.650794%

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 7505 6300 146 146 1.95% 2.32%
B 7504 6299 644 644 8.58% 10.22%
C 7505 6300 109 109 1.45% 1.73%
D 7505 6300 4830 4830 64.36% 76.67%

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 8 14 52445 109.8 1910 1923 460.1
A 8 15 11073 19.89 1910 1923 460.1
A 13 235 6426 9.79 1910 1923 460.1
B 8 4 707700 1499.09 2008 2016 470.7
B 3 204 321261 678.17 2008 2016 470.7
B 6 53 178431 374.76 2008 2016 470.7
C 15 241 285667 565.54 1810 1873 501.8
C 8 208 111597 218.66 1810 1873 501.8
C 7 159 32163 60.36 1810 1873 501.8
D 13 169 9465413 24145.13 1282 1322 392.0
D 10 84 1992587 5080.19 1282 1322 392.0
D 12 22 19345 45.98 1282 1322 392.0

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