ASTROSAT CZTI

Data Quality Report

Orbit 26755

Creation date: 2024-06-27T19:32:29.356350
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/AS1T03_223T01_9000003850_26755cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26755cztM0_level2_quad_clean.evt
Size (bytes)980,352,00069,543,360
Size934.9 MB 66.3 MB
Events in quadrant A4,680,746519,126
Events in quadrant B13,081,171198,245
Events in quadrant C3,323,738516,956
Events in quadrant D8,182,723432,063

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084
B01612
C051
D084

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183360
B0430850
C0140950
D0288840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67121902.830751%
B6376473174.200125%
C67231341.993158%
D6553181127.636197%

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 7290 6882 83 83 1.14% 1.21%
B 7291 6521 4254 4254 58.35% 65.24%
C 7291 6887 21 21 0.29% 0.30%
D 7290 6805 1246 1246 17.09% 18.31%

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 13 1527531 9262.8 813 795 164.8
A 13 254 11690 66.1 813 795 164.8
A 3 137 7761 42.26 813 795 164.8
B 0 189 11480059 144580.76 406 395 79.4
B 12 111 9231 111.29 406 395 79.4
B 11 111 8248 98.9 406 395 79.4
C 14 238 123664 665.94 784 787 184.5
C 2 16 103787 558.22 784 787 184.5
C 3 233 19734 102.68 784 787 184.5
D 7 80 4404293 24367.84 687 670 180.7
D 1 52 572165 3162.42 687 670 180.7
D 12 227 174730 963.18 687 670 180.7

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