ASTROSAT CZTI

Data Quality Report

Orbit 22903

Creation date: 2024-06-27T18:47:18.100739
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/AS1A08_009T01_9000003382_22903cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22903cztM0_level2_quad_clean.evt
Size (bytes)681,465,60097,770,240
Size649.9 MB 93.2 MB
Events in quadrant A3,233,219653,936
Events in quadrant B3,382,282660,750
Events in quadrant C3,202,780630,782
Events in quadrant D10,345,464526,334

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143261
B0146491
C0142771
D0356701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70081371.954909%
B70091762.511057%
C70091622.311314%
D7008199728.496005%

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 7258 7009 0 0 0.00% 0.00%
B 7259 7010 10 10 0.14% 0.14%
C 7259 7010 0 0 0.00% 0.00%
D 7258 7009 1660 1660 22.87% 23.68%

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 11330 62.05 834 814 169.5
A 0 226 7431 39.04 834 814 169.5
A 3 137 7358 38.61 834 814 169.5
B 3 64 66990 426.73 823 801 155.1
B 12 111 19289 119.2 823 801 155.1
B 0 189 17952 110.58 823 801 155.1
C 14 238 126285 683.37 789 791 183.6
C 13 61 5524 25.77 789 791 183.6
C 7 247 2486 9.23 789 791 183.6
D 1 239 7213237 41682.44 717 693 173.0
D 12 233 169238 974.05 717 693 173.0
D 8 195 60651 346.51 717 693 173.0

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