ASTROSAT CZTI

Data Quality Report

Orbit 18115

Creation date: 2024-06-27T17:45:08.422626
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/AS1A05_019T01_9000002688_18115cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18115cztM0_level2_quad_clean.evt
Size (bytes)975,827,520162,264,960
Size930.6 MB 154.7 MB
Events in quadrant A6,579,2341,023,619
Events in quadrant B6,545,7321,033,987
Events in quadrant C6,377,849985,465
Events in quadrant D9,133,126934,849

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285463
B0282373
C0277783
D0363113

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135631010.744673%
B135641090.803598%
C135641140.840460%
D135637115.242203%

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 15213 13566 28 28 0.18% 0.21%
B 15214 13567 11 11 0.07% 0.08%
C 15214 13567 5 5 0.03% 0.04%
D 15213 13566 541 541 3.56% 3.99%

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 2 271012 823.79 1618 1579 327.1
A 15 174 88246 264.98 1618 1579 327.1
A 0 226 13891 37.64 1618 1579 327.1
B 7 220 61324 191.96 1618 1573 311.3
B 0 197 48319 150.18 1618 1573 311.3
B 12 111 37575 115.66 1618 1573 311.3
C 14 238 239722 654.03 1553 1558 364.1
C 0 207 43168 114.27 1553 1558 364.1
C 3 233 14526 35.61 1553 1558 364.1
D 7 238 2245142 6013.74 1541 1498 373.1
D 1 52 316134 843.33 1541 1498 373.1
D 10 70 263155 701.33 1541 1498 373.1

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