ASTROSAT CZTI

Data Quality Report

Orbit 15020

Creation date: 2024-06-27T17:02:38.043963
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_057T01_9000002212_15020cztM0_level2.evt modeM0/AS1T02_057T01_9000002212_15020cztM0_level2_quad_clean.evt
Size (bytes)457,773,12099,967,680
Size436.6 MB 95.3 MB
Events in quadrant A3,472,438647,166
Events in quadrant B3,401,427658,739
Events in quadrant C3,543,424647,614
Events in quadrant D3,005,814621,654

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146333
B0144692
C0150272
D0136882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6483340.524449%
B64831071.650470%
C64831181.820145%
D6483300.462749%

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 7619 6485 0 0 0.00% 0.00%
B 7619 6484 45 45 0.59% 0.69%
C 7619 6484 63 63 0.83% 0.97%
D 7619 6485 12 12 0.16% 0.19%

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 1 162 167244 1077.49 765 749 154.5
A 12 189 111467 716.52 765 749 154.5
A 1 178 87724 562.87 765 749 154.5
B 0 229 236264 1635.73 768 749 144.0
B 3 64 110501 762.26 768 749 144.0
B 3 209 18031 120.03 768 749 144.0
C 9 236 477715 2788.49 747 751 171.0
C 3 233 116757 678.21 747 751 171.0
C 0 207 25576 145.14 747 751 171.0
D 10 70 67265 374.03 743 720 177.9
D 2 136 54320 301.27 743 720 177.9
D 12 222 25720 140.52 743 720 177.9

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