ASTROSAT CZTI

Data Quality Report

Orbit 14670

Creation date: 2024-06-27T16:58:16.764425
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_101T01_9000002170_14670cztM0_level2.evt modeM0/AS1A04_101T01_9000002170_14670cztM0_level2_quad_clean.evt
Size (bytes)985,697,280161,591,040
Size940.0 MB 154.1 MB
Events in quadrant A6,721,408999,562
Events in quadrant B6,798,896986,027
Events in quadrant C7,822,022991,226
Events in quadrant D7,580,193967,991

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286014
B0288483
C0316783
D0320323

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A137401391.011645%
B137401811.317322%
C137401240.902475%
D137404533.296943%

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 15476 13741 1 1 0.01% 0.01%
B 15476 13741 4 4 0.03% 0.03%
C 15476 13741 3 3 0.02% 0.02%
D 15476 13742 378 378 2.44% 2.75%

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 12 189 148516 439.71 1667 1633 334.0
A 8 15 101533 299.06 1667 1633 334.0
A 1 162 32313 91.84 1667 1633 334.0
B 0 219 121547 372.6 1659 1617 321.9
B 0 197 60394 182.61 1659 1617 321.9
B 0 214 51116 153.79 1659 1617 321.9
C 3 233 1496391 3972.55 1616 1625 376.3
C 0 207 20664 50.6 1616 1625 376.3
C 13 61 11502 26.25 1616 1625 376.3
D 10 199 848631 2051.06 1580 1545 413.0
D 1 52 378586 912.93 1580 1545 413.0
D 12 110 94964 226.2 1580 1545 413.0

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