ASTROSAT CZTI

Data Quality Report

Orbit 22858

Creation date: 2024-06-27T18:46:40.926575
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/AS1A07_054T01_9000003378_22858cztM0_level2.evt modeM0/AS1A07_054T01_9000003378_22858cztM0_level2_quad_clean.evt
Size (bytes)486,809,280137,998,080
Size464.3 MB 131.6 MB
Events in quadrant A3,432,544952,922
Events in quadrant B3,453,305952,570
Events in quadrant C3,323,969897,159
Events in quadrant D4,054,347886,420

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146942
B0146582
C0144483
D0163502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70421011.434252%
B70431221.732216%
C70421412.002272%
D70421502.130077%

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 7907 7043 0 0 0.00% 0.00%
B 7908 7044 5 5 0.06% 0.07%
C 7907 7043 0 0 0.00% 0.00%
D 7907 7043 53 53 0.67% 0.75%

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 11 47 81813 470.87 858 841 172.0
A 13 252 44952 256.52 858 841 172.0
A 13 254 11423 61.54 858 841 172.0
B 0 190 34062 208.61 847 824 159.3
B 0 229 27745 168.96 847 824 159.3
B 4 216 21928 132.45 847 824 159.3
C 14 238 130510 702.1 807 809 184.7
C 10 22 35880 189.84 807 809 184.7
C 7 247 7478 36.1 807 809 184.7
D 7 238 205737 1023.97 827 803 200.1
D 13 153 181805 904.39 827 803 200.1
D 12 227 165270 821.77 827 803 200.1

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