ASTROSAT CZTI

Data Quality Report

Orbit 12755

Creation date: 2024-06-27T16:31:59.437674
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/AS1A04_044T01_9000001882_12755cztM0_level2.evt modeM0/AS1A04_044T01_9000001882_12755cztM0_level2_quad_clean.evt
Size (bytes)648,996,48093,692,160
Size618.9 MB 89.4 MB
Events in quadrant A3,951,583599,254
Events in quadrant B4,629,793578,129
Events in quadrant C4,015,848611,104
Events in quadrant D6,576,160552,660

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164683
B0184322
C0167132
D0245582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7121330.463418%
B71214986.993400%
C71211311.839629%
D71216198.692599%

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 7662 7123 0 0 0.00% 0.00%
B 7662 7123 325 325 4.24% 4.56%
C 7662 7123 144 144 1.88% 2.02%
D 7662 7123 606 606 7.91% 8.51%

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 23 565838 3279.46 841 825 172.3
A 15 222 88689 509.98 841 825 172.3
A 0 226 43164 245.74 841 825 172.3
B 4 239 1302532 8281.39 812 790 157.2
B 0 214 48442 303.15 812 790 157.2
B 0 197 33083 205.44 812 790 157.2
C 15 208 849460 4508.81 811 817 188.2
C 13 61 5898 27.0 811 817 188.2
C 14 234 4070 17.28 811 817 188.2
D 1 52 3290555 16816.62 796 772 195.6
D 8 195 126835 644.4 796 772 195.6
D 2 136 82588 418.22 796 772 195.6

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