ASTROSAT CZTI

Data Quality Report

Orbit 03747

Creation date: 2024-06-27T14:33:10.152359
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/AS1G05_248T01_9000000486_03747cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03747cztM0_level2_quad_clean.evt
Size (bytes)462,372,48059,362,560
Size441.0 MB 56.6 MB
Events in quadrant A3,425,173344,571
Events in quadrant B3,763,580343,263
Events in quadrant C2,949,584339,881
Events in quadrant D3,435,214328,099

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140102
B0151701
C0130021
D0146851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63241201.897533%
B63241081.707780%
C6324651.027830%
D6324851.344086%

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 7519 6324 23 23 0.31% 0.36%
B 7519 6324 20 20 0.27% 0.32%
C 7519 6324 2 2 0.03% 0.03%
D 7519 6325 32 32 0.43% 0.51%

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 13 251 143977 909.75 778 762 157.4
A 0 118 124162 783.88 778 762 157.4
A 8 15 114291 721.17 778 762 157.4
B 15 204 344412 2304.28 789 771 149.1
B 0 173 85265 566.57 789 771 149.1
B 3 0 76998 511.14 789 771 149.1
C 12 4 12919 69.61 749 753 174.8
C 13 61 6217 31.26 749 753 174.8
C 2 53 6165 30.97 749 753 174.8
D 1 20 403208 2232.89 746 727 180.3
D 2 37 58544 320.76 746 727 180.3
D 8 112 53952 295.28 746 727 180.3

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
Veto Counter