ASTROSAT CZTI

Data Quality Report

Orbit 47684

Creation date: 2024-07-23T03:20:01.838117
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_082T01_9000006342_47684cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47684cztM0_level2_quad_clean.evt
Size (bytes)567,817,920118,497,600
Size541.5 MB 113.0 MB
Events in quadrant A7,683,315774,403
Events in quadrant B3,742,630807,118
Events in quadrant C3,365,680783,166
Events in quadrant D5,641,889697,809

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282930
B0162570
C0156500
D0220390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75503644.821192%
B75511812.397034%
C7551690.913786%
D75514686.197855%

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 7550 7550 3 3 0.04% 0.04%
B 7551 7551 8 8 0.11% 0.11%
C 7551 7551 9 9 0.12% 0.12%
D 7551 7551 295 295 3.91% 3.91%

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 10 83 4168766 23300.87 854 836 178.9
A 9 191 162758 905.23 854 836 178.9
A 7 3 19950 106.86 854 836 178.9
B 0 190 141541 829.57 855 828 169.6
B 5 255 98311 574.71 855 828 169.6
B 0 200 68348 398.06 855 828 169.6
C 14 254 63408 313.68 844 847 199.4
C 13 61 5623 23.95 844 847 199.4
C 12 249 5447 23.06 844 847 199.4
D 12 2 1628771 7670.39 833 804 212.2
D 10 181 473943 2229.26 833 804 212.2
D 13 29 62870 292.43 833 804 212.2

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