ASTROSAT CZTI

Data Quality Report

Orbit 20805

Creation date: 2024-06-27T18:19:47.792323
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/AS1A05_013T01_9000003070_20805cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20805cztM0_level2_quad_clean.evt
Size (bytes)524,986,560109,036,800
Size500.7 MB 104.0 MB
Events in quadrant A3,429,026721,081
Events in quadrant B4,213,328691,302
Events in quadrant C3,474,499690,523
Events in quadrant D4,279,594683,689

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151381
B0173241
C0151961
D0177721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7407580.783043%
B74073294.441744%
C7408620.836933%
D7408991.336393%

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 7647 7407 0 0 0.00% 0.00%
B 7647 7407 230 230 3.01% 3.11%
C 7648 7409 0 0 0.00% 0.00%
D 7648 7409 50 50 0.65% 0.67%

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 0 226 7779 38.06 892 869 181.6
A 3 137 7025 33.9 892 869 181.6
A 12 194 6455 30.76 892 869 181.6
B 0 182 533639 3267.06 860 840 163.1
B 7 220 114841 699.04 860 840 163.1
B 0 189 53630 323.7 860 840 163.1
C 14 238 131629 662.96 840 845 197.3
C 3 233 21017 102.25 840 845 197.3
C 7 247 14341 68.41 840 845 197.3
D 1 20 361255 1736.95 856 832 207.5
D 9 1 255441 1227.01 856 832 207.5
D 1 52 125904 602.75 856 832 207.5

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