ASTROSAT CZTI

Data Quality Report

Orbit 32850

Creation date: 2024-06-27T20:42:56.996107
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/AS1A11_088T01_9000004738_32850cztM0_level2.evt modeM0/AS1A11_088T01_9000004738_32850cztM0_level2_quad_clean.evt
Size (bytes)554,855,04060,027,840
Size529.2 MB 57.2 MB
Events in quadrant A2,421,220383,032
Events in quadrant B3,208,025388,426
Events in quadrant C2,794,253385,419
Events in quadrant D8,042,009310,414

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105171
B0127201
C0115001
D0273981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4986440.882471%
B49862595.194545%
C49861362.727637%
D4986207941.696751%

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 4986 4986 31 31 0.62% 0.62%
B 4986 4986 171 171 3.43% 3.43%
C 4986 4986 113 113 2.27% 2.27%
D 4986 4986 1744 1744 34.98% 34.98%

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 9 143 137998 1174.41 576 565 117.0
A 0 135 32618 273.9 576 565 117.0
A 13 254 9608 77.28 576 565 117.0
B 5 172 684214 6222.72 566 554 109.9
B 0 199 74259 670.87 566 554 109.9
B 0 197 71311 644.03 566 554 109.9
C 3 233 395434 3051.07 556 561 129.4
C 0 10 149137 1148.0 556 561 129.4
C 1 241 38477 292.97 556 561 129.4
D 12 227 1714391 15094.03 441 431 113.6
D 13 153 1657261 14590.91 441 431 113.6
D 8 195 1060026 9331.35 441 431 113.6

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