ASTROSAT CZTI

Data Quality Report

Orbit 14801

Creation date: 2024-06-27T16:59:51.002178
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_022T02_9000002184_14801cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14801cztM0_level2_quad_clean.evt
Size (bytes)926,101,440166,993,920
Size883.2 MB 159.3 MB
Events in quadrant A6,138,4951,047,437
Events in quadrant B7,058,7021,045,023
Events in quadrant C7,825,6301,034,592
Events in quadrant D6,132,2981,019,873

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274074
B0298733
C0318483
D0280233

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13188730.553534%
B131882591.963907%
C131881250.947831%
D131881491.129815%

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 15159 13192 2 2 0.01% 0.02%
B 15159 13192 106 106 0.70% 0.80%
C 15159 13192 32 32 0.21% 0.24%
D 15159 13192 100 100 0.66% 0.76%

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 151992 484.28 1539 1505 310.7
A 12 96 33095 101.66 1539 1505 310.7
A 4 2 18455 54.55 1539 1505 310.7
B 10 16 332063 1128.15 1538 1497 293.0
B 0 219 300298 1019.74 1538 1497 293.0
B 3 64 107680 362.38 1538 1497 293.0
C 3 233 1995124 5794.41 1489 1493 344.1
C 3 232 13204 34.04 1489 1493 344.1
C 13 61 10744 26.89 1489 1493 344.1
D 15 0 232353 619.66 1483 1442 372.6
D 10 70 94808 250.55 1483 1442 372.6
D 2 234 54333 141.94 1483 1442 372.6

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