ASTROSAT CZTI

Data Quality Report

Orbit 27725

Creation date: 2024-06-27T19:43:34.653364
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/AS1T03_263T01_9000003990_27725cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27725cztM0_level2_quad_clean.evt
Size (bytes)532,926,720107,591,040
Size508.2 MB 102.6 MB
Events in quadrant A4,017,480706,146
Events in quadrant B3,665,295720,437
Events in quadrant C3,956,489688,533
Events in quadrant D4,029,092659,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165880
B0150590
C0158900
D0162300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69511482.129190%
B69511442.071644%
C69511772.546396%
D69512363.395195%

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 7222 6951 2 2 0.03% 0.03%
B 7222 6951 5 5 0.07% 0.07%
C 7222 6951 2 2 0.03% 0.03%
D 7222 6951 87 87 1.20% 1.25%

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 6 16 557245 2904.77 895 878 191.5
A 13 254 10819 51.9 895 878 191.5
A 3 137 8589 40.26 895 878 191.5
B 3 64 126281 693.47 889 869 180.8
B 12 111 20389 107.94 889 869 180.8
B 11 111 18503 97.51 889 869 180.8
C 3 233 468021 2213.05 858 868 211.1
C 14 238 139367 656.11 858 868 211.1
C 10 22 6873 28.45 858 868 211.1
D 1 52 579936 2684.36 859 836 215.7
D 11 176 61319 280.36 859 836 215.7
D 2 250 50711 231.19 859 836 215.7

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