ASTROSAT CZTI

Data Quality Report

Orbit 31615

Creation date: 2024-06-27T20:30:43.979306
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/AS1A10_123T01_9000004620_31615cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31615cztM0_level2_quad_clean.evt
Size (bytes)188,415,36017,176,320
Size179.7 MB 16.4 MB
Events in quadrant A1,486,16091,638
Events in quadrant B1,713,78393,566
Events in quadrant C1,067,20690,475
Events in quadrant D1,288,47985,557

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079372161
B076901126
C05175737
D06175985

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05410
B05410
C0548
D05511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215124111.204091%
B218240.183318%
C2204100.453721%
D219270.319343%

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 5582 2215 168 168 3.01% 7.58%
B 5598 2236 0 0 0.00% 0.00%
C 5594 2257 0 0 0.00% 0.00%
D 5594 2242 4 4 0.07% 0.18%

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 0 13 571175 11623.57 236 232 49.1
A 13 254 3602 68.61 236 232 49.1
A 3 137 2346 43.04 236 232 49.1
B 6 159 660812 12785.87 261 255 51.7
B 4 80 23174 443.62 261 255 51.7
B 12 111 5967 110.56 261 255 51.7
C 14 238 45506 739.89 255 256 61.2
C 3 233 11312 180.78 255 256 61.2
C 4 175 7065 111.34 255 256 61.2
D 8 195 197803 3156.04 252 245 62.6
D 10 203 65908 1048.98 252 245 62.6
D 2 250 47692 757.98 252 245 62.6

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