ASTROSAT CZTI

Data Quality Report

Orbit 51670

Creation date: 2025-04-22T12:01:02.754651
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/AS1A13_031T01_9000006462_51670cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51670cztM0_level2_quad_clean.evt
Size (bytes)2,705,788,800446,261,760
Size2.5 GB 425.6 MB
Events in quadrant A29,088,4402,708,310
Events in quadrant B22,310,2963,167,901
Events in quadrant C27,699,7682,699,530
Events in quadrant D18,598,6212,743,281

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01083116
B0882966
C010473612
D0786176

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06520
B06520
C06520
D06520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31894472414.811563%
B3189521936.875686%
C31894401212.579168%
D3189510853.401787%

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 37959 31897 4108 4108 10.82% 12.88%
B 37960 31898 1347 1347 3.55% 4.22%
C 37960 31899 3406 3406 8.97% 10.68%
D 37960 31899 883 883 2.33% 2.77%

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 7 64 13017931 16748.32 3180 3101 777.1
A 12 3 652285 835.41 3180 3101 777.1
A 13 248 617155 790.2 3180 3101 777.1
B 1 223 2175030 3072.37 3324 3207 706.9
B 5 172 1862161 2629.77 3324 3207 706.9
B 4 170 643099 905.22 3324 3207 706.9
C 15 189 9204167 10622.01 3167 3136 866.2
C 12 254 1476278 1700.65 3167 3136 866.2
C 13 3 1170012 1347.08 3167 3136 866.2
D 8 176 1666563 1811.85 3293 3168 918.1
D 2 249 1132112 1229.7 3293 3168 918.1
D 3 12 902303 979.38 3293 3168 918.1

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