ASTROSAT CZTI

Data Quality Report

Orbit 09833

Creation date: 2024-06-27T15:51:11.048703
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/AS1G07_020T01_9000001398_09833cztM0_level2.evt modeM0/AS1G07_020T01_9000001398_09833cztM0_level2_quad_clean.evt
Size (bytes)587,928,96087,145,920
Size560.7 MB 83.1 MB
Events in quadrant A4,015,420515,767
Events in quadrant B4,260,538522,731
Events in quadrant C4,064,017520,183
Events in quadrant D4,888,498490,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018110331
B018509366
C018219360
D020560364

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01786
B01784
C01788
D01786

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85064114.831883%
B84914455.240843%
C84923173.732925%
D84954835.685697%

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 8903 8584 0 0 0.00% 0.00%
B 8903 8579 8 8 0.09% 0.09%
C 8903 8567 4 4 0.04% 0.05%
D 8903 8584 152 152 1.71% 1.77%

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 9285 38.61 1041 1014 214.2
A 12 194 8740 36.07 1041 1014 214.2
A 13 253 6180 24.12 1041 1014 214.2
B 4 173 34076 162.32 1045 1013 203.7
B 0 230 32911 156.6 1045 1013 203.7
B 0 187 31002 147.23 1045 1013 203.7
C 0 207 37062 151.28 1022 1025 238.2
C 8 128 12406 47.78 1022 1025 238.2
C 10 22 10470 39.65 1022 1025 238.2
D 2 136 397970 1618.35 1008 979 245.3
D 2 152 173589 703.65 1008 979 245.3
D 7 46 102056 412.04 1008 979 245.3

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