ASTROSAT CZTI

Data Quality Report

Orbit 46910

Creation date: 2024-06-27T23:29:19.199151
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_053T01_9000006282_46910cztM0_level2.fits modeM0/AS1A13_053T01_9000006282_46910cztM0_level2_quad_clean.evt
Size (bytes)622,560,96086,650,560
Size593.7 MB 82.6 MB
Events in quadrant A5,667,920655,687
Events in quadrant B11,045,883314,570
Events in quadrant C2,548,766654,048
Events in quadrant D3,331,735593,377

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207151
B0368201
C0118301
D0138721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58052374.082687%
B5806362062.349294%
C5806190.327248%
D58061722.962453%

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 7010 5805 69 69 0.98% 1.19%
B 7010 5805 2834 2834 40.43% 48.82%
C 7011 5807 1 1 0.01% 0.02%
D 7011 5807 111 111 1.58% 1.91%

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 3007908 21984.39 661 647 136.8
A 13 248 80754 585.61 661 647 136.8
A 0 243 8317 56.07 661 647 136.8
B 3 112 8769346 84296.12 533 516 104.0
B 15 36 46402 441.11 533 516 104.0
B 0 200 34818 329.75 533 516 104.0
C 14 254 15118 95.2 649 650 152.0
C 13 61 4392 24.62 649 650 152.0
C 0 207 3963 21.8 649 650 152.0
D 13 249 224433 1392.37 644 623 160.7
D 2 249 197698 1226.04 644 623 160.7
D 1 52 179277 1111.44 644 623 160.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter