ASTROSAT CZTI

Data Quality Report

Orbit 42435

Creation date: 2024-06-27T22:40:09.606695
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/AS1C07_001T10_9000005806_42435cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42435cztM0_level2_quad_clean.evt
Size (bytes)529,217,28083,174,400
Size504.7 MB 79.3 MB
Events in quadrant A3,019,290612,746
Events in quadrant B5,570,405465,842
Events in quadrant C2,837,822599,339
Events in quadrant D7,721,486443,006

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125382
B0207432
C0122772
D0268232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5670150.264550%
B5671143025.216011%
C5671220.387939%
D5671147025.921354%

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 7102 5671 5 5 0.07% 0.09%
B 7103 5672 1168 1168 16.44% 20.59%
C 7103 5672 17 17 0.24% 0.30%
D 7103 5672 1483 1483 20.88% 26.15%

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 638646 5241.29 593 581 121.7
A 14 223 30456 245.4 593 581 121.7
A 13 6 18333 145.82 593 581 121.7
B 0 186 3192674 32093.65 504 491 99.5
B 5 255 322083 3233.23 504 491 99.5
B 3 112 29509 291.74 504 491 99.5
C 15 214 235360 1722.7 582 584 136.3
C 10 34 151160 1104.87 582 584 136.3
C 12 175 104876 765.26 582 584 136.3
D 12 33 4427379 33493.13 531 513 132.2
D 12 233 203741 1537.6 531 513 132.2
D 12 6 152909 1153.01 531 513 132.2

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