ASTROSAT CZTI

Data Quality Report

Orbit 20231226_A13_080T04_9000006004_level2

Creation date: 2024-01-01T15:04:43.891071
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/AS1A13_080T04_9000006004cztM0_level2.fits modeM0/AS1A13_080T04_9000006004cztM0_level2_quad_clean.evt
Size (bytes)171,037,440235,411,200
Size163.1 MB 224.5 MB
Events in quadrant A1,029,2801,583,839
Events in quadrant B969,5181,523,051
Events in quadrant C967,3501,371,759
Events in quadrant D842,9041,282,288

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0599000
B0526020
C0598760
D0687480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198685052.541776%
B1986715767.932753%
C19868234311.792833%
D1986918649.381448%

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 19883 19867 0 0 0.00% 0.00%
B 19884 19821 0 0 0.00% 0.00%
C 19884 19769 0 0 0.00% 0.00%
D 19884 19811 0 0 0.00% 0.00%

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 7 110 873 8.73 268 252 71.1
A 0 29 797 7.67 268 252 71.1
A 7 109 758 7.12 268 252 71.1
B 2 9 936 12.9 256 244 53.6
B 2 8 766 9.73 256 244 53.6
B 3 17 734 9.14 256 244 53.6
C 1 81 765 7.77 256 238 67.8
C 1 80 719 7.09 256 238 67.8
C 12 241 661 6.24 256 238 67.8
D 8 176 695 7.01 241 220 67.8
D 3 159 638 6.17 241 220 67.8
D 10 114 631 6.06 241 220 67.8

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