ASTROSAT CZTI

Data Quality Report

Orbit 25248

Creation date: 2024-06-27T19:15:29.272125
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_097T01_9000003692_25248cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25248cztM0_level2_quad_clean.evt
Size (bytes)597,245,76093,127,680
Size569.6 MB 88.8 MB
Events in quadrant A3,588,959594,333
Events in quadrant B3,695,218596,907
Events in quadrant C4,311,135567,898
Events in quadrant D5,990,716545,874

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152930
B0155770
C0177010
D0229180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7393420.568105%
B7393700.946842%
C73922182.949134%
D73926578.887987%

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 7748 7394 0 0 0.00% 0.00%
B 7748 7394 5 5 0.06% 0.07%
C 7747 7393 29 29 0.37% 0.39%
D 7747 7393 479 479 6.18% 6.48%

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 13 254 11759 57.41 930 911 188.9
A 3 137 8609 40.74 930 911 188.9
A 0 226 7885 36.91 930 911 188.9
B 0 190 33349 183.86 923 899 176.5
B 12 111 21854 118.73 923 899 176.5
B 11 111 19191 103.64 923 899 176.5
C 7 247 444075 2145.6 884 891 206.6
C 2 16 228536 1102.11 884 891 206.6
C 14 238 140868 677.68 884 891 206.6
D 1 239 1433897 6725.78 878 852 213.1
D 1 52 249174 1165.46 878 852 213.1
D 12 235 211666 989.42 878 852 213.1

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