ASTROSAT CZTI

Data Quality Report

Orbit 31151

Creation date: 2024-06-27T20:24:08.341287
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/AS1C06_002T01_9000004500_31151cztM0_level2.evt modeM0/AS1C06_002T01_9000004500_31151cztM0_level2_quad_clean.evt
Size (bytes)680,463,360113,762,880
Size648.9 MB 108.5 MB
Events in quadrant A3,098,652811,693
Events in quadrant B5,198,137789,410
Events in quadrant C3,576,603788,677
Events in quadrant D8,324,876631,508

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130331
B0196091
C0147841
D0290331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6062580.956780%
B60621592.622897%
C60621983.266249%
D6062197432.563510%

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 7367 6063 0 0 0.00% 0.00%
B 7367 6063 7 7 0.10% 0.12%
C 7367 6063 24 24 0.33% 0.40%
D 7367 6063 1284 1284 17.43% 21.18%

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 13 254 12651 75.82 799 784 156.5
A 0 226 6912 39.15 799 784 156.5
A 3 137 6887 38.99 799 784 156.5
B 6 159 1911042 13285.82 787 769 143.8
B 0 190 95757 660.64 787 769 143.8
B 0 230 43216 295.22 787 769 143.8
C 3 233 231965 1286.68 779 787 179.7
C 14 238 131501 727.52 779 787 179.7
C 0 10 92369 509.72 779 787 179.7
D 13 174 3108336 18370.52 678 663 169.2
D 8 195 1947919 11510.9 678 663 169.2
D 2 250 288487 1701.43 678 663 169.2

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