ASTROSAT CZTI

Data Quality Report

Orbit 51878

Creation date: 2025-05-01T17:54:40.441614
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/AS1C09_011T05_9000006466_51878cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51878cztM0_level2_quad_clean.evt
Size (bytes)761,650,56094,593,600
Size726.4 MB 90.2 MB
Events in quadrant A5,930,787646,898
Events in quadrant B5,669,141680,021
Events in quadrant C5,112,923621,715
Events in quadrant D10,922,901412,900

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226260
B0218130
C0202720
D0374490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72142463.410036%
B72156278.690229%
C72153144.352044%
D7215258635.841996%

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 7214 7214 194 194 2.69% 2.69%
B 7215 7215 407 407 5.64% 5.64%
C 7215 7215 256 256 3.55% 3.55%
D 7215 7214 2233 2233 30.95% 30.95%

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 4 175 1441484 7794.4 745 728 184.8
A 11 3 430004 2322.36 745 728 184.8
A 4 3 201113 1084.07 745 728 184.8
B 12 32 1380547 8901.84 725 699 155.0
B 10 44 482743 3109.82 725 699 155.0
B 4 170 128589 825.06 725 699 155.0
C 15 192 369775 1880.35 716 711 196.3
C 1 60 362383 1842.69 716 711 196.3
C 14 254 257363 1307.62 716 711 196.3
D 11 129 4484914 26347.02 604 581 170.2
D 6 42 1288207 7565.25 604 581 170.2
D 0 5 780166 4580.33 604 581 170.2

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