ASTROSAT CZTI

Data Quality Report

Orbit 50853

Creation date: 2025-02-21T15:25:38.663540
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_001T01_9000006450_50853cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50853cztM0_level2_quad_clean.evt
Size (bytes)586,134,72092,920,320
Size559.0 MB 88.6 MB
Events in quadrant A6,680,610570,863
Events in quadrant B4,240,381676,892
Events in quadrant C5,940,431555,969
Events in quadrant D4,317,486544,128

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245131
B0171021
C0222201
D0175461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A668186012.872325%
B66821171.750973%
C66816689.998503%
D66812984.460410%

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 7641 6681 843 843 11.03% 12.62%
B 7642 6682 37 37 0.48% 0.55%
C 7641 6682 562 562 7.36% 8.41%
D 7641 6681 242 242 3.17% 3.62%

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 80 3374674 20084.13 687 671 168.0
A 7 221 93657 553.51 687 671 168.0
A 5 240 71391 420.97 687 671 168.0
B 5 172 878235 5891.95 699 673 148.9
B 8 128 277867 1861.08 699 673 148.9
B 10 247 42709 282.23 699 673 148.9
C 4 5 1089957 6096.7 653 647 178.7
C 1 29 573689 3207.23 653 647 178.7
C 1 60 210491 1174.47 653 647 178.7
D 2 216 304889 1617.32 667 644 188.1
D 6 191 269506 1429.23 667 644 188.1
D 2 249 259829 1377.79 667 644 188.1

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