ASTROSAT CZTI

Data Quality Report

Orbit 15627

Creation date: 2024-06-27T17:11:19.335105
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/AS1T02_086T01_9000002316_15627cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15627cztM0_level2_quad_clean.evt
Size (bytes)469,183,68099,656,640
Size447.4 MB 95.0 MB
Events in quadrant A3,142,374640,213
Events in quadrant B3,527,737649,596
Events in quadrant C3,177,422632,357
Events in quadrant D3,893,884616,118

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139753
B0149352
C0139332
D0164992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6886160.232356%
B6886580.842289%
C6886390.566367%
D6886210.304967%

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 8702 6888 1 1 0.01% 0.01%
B 8702 6889 23 23 0.26% 0.33%
C 8702 6889 0 0 0.00% 0.00%
D 8702 6888 3 3 0.03% 0.04%

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 3 80 11404 64.77 810 792 163.8
A 13 248 9654 54.09 810 792 163.8
A 0 226 7340 39.96 810 792 163.8
B 4 251 87497 556.72 813 792 155.7
B 4 48 72235 458.73 813 792 155.7
B 5 65 54659 345.87 813 792 155.7
C 14 238 119956 652.43 779 783 182.7
C 3 233 17769 92.99 779 783 182.7
C 13 61 5572 26.22 779 783 182.7
D 15 0 788491 4086.27 786 763 192.8
D 2 234 30967 156.68 786 763 192.8
D 2 33 27676 139.61 786 763 192.8

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