ASTROSAT CZTI

Data Quality Report

Orbit 32091

Creation date: 2024-06-27T20:36:23.633103
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/AS1T04_051T01_9000004686_32091cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32091cztM0_level2_quad_clean.evt
Size (bytes)815,716,80073,765,440
Size777.9 MB 70.3 MB
Events in quadrant A3,539,099481,882
Events in quadrant B7,414,299436,042
Events in quadrant C3,974,594477,286
Events in quadrant D9,350,523396,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142622
B0262872
C0159362
D0321862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6324370.585073%
B632489914.215686%
C63242313.652751%
D6324184729.206199%

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 7709 6324 0 0 0.00% 0.00%
B 7709 6324 606 606 7.86% 9.58%
C 7709 6324 49 49 0.64% 0.77%
D 7709 6324 1861 1861 24.14% 29.43%

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 6 13248 69.08 915 903 178.7
A 13 254 11686 60.34 915 903 178.7
A 3 137 8127 40.42 915 903 178.7
B 10 245 2107018 13339.69 869 852 157.9
B 6 159 1657079 10489.94 869 852 157.9
B 5 172 197929 1248.21 869 852 157.9
C 0 10 235361 1181.42 883 895 198.5
C 14 238 153245 767.66 883 895 198.5
C 2 16 58383 289.67 883 895 198.5
D 12 227 3240366 16764.11 830 811 193.2
D 12 79 1860201 9622.01 830 811 193.2
D 8 195 954977 4937.64 830 811 193.2

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