ASTROSAT CZTI

Data Quality Report

Orbit 03739

Creation date: 2024-06-27T14:33:04.475988
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_03739cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03739cztM0_level2_quad_clean.evt
Size (bytes)567,126,72087,756,480
Size540.9 MB 83.7 MB
Events in quadrant A4,831,770533,511
Events in quadrant B4,752,983540,417
Events in quadrant C3,312,511541,836
Events in quadrant D3,777,721527,670

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193842
B0190361
C0152301
D0164851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73793845.203957%
B73792403.252473%
C7379420.569183%
D7379861.165470%

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 7474 7380 222 222 2.97% 3.01%
B 7474 7380 52 52 0.70% 0.70%
C 7474 7380 0 0 0.00% 0.00%
D 7474 7380 21 21 0.28% 0.28%

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 0 118 707709 4023.46 841 820 175.7
A 13 251 530034 3012.17 841 820 175.7
A 0 128 141938 803.21 841 820 175.7
B 0 173 649135 3855.26 862 840 168.2
B 15 204 445021 2641.44 862 840 168.2
B 14 167 151285 894.66 862 840 168.2
C 2 53 25564 125.2 837 838 197.5
C 12 4 7920 35.86 837 838 197.5
C 13 61 7061 31.51 837 838 197.5
D 2 118 316266 1564.11 835 810 201.7
D 9 35 54947 268.42 835 810 201.7
D 1 255 39842 193.53 835 810 201.7

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