ASTROSAT CZTI

Data Quality Report

Orbit 26902

Creation date: 2024-06-27T19:34:23.101638
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_232T01_9000003886_26902cztM0_level2.evt modeM0/AS1T03_232T01_9000003886_26902cztM0_level2_quad_clean.evt
Size (bytes)730,751,040155,972,160
Size696.9 MB 148.7 MB
Events in quadrant A5,930,2591,036,028
Events in quadrant B4,554,3151,068,646
Events in quadrant C3,882,0451,046,073
Events in quadrant D7,193,794987,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234740
B0191460
C0172910
D0271600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84383333.946433%
B84382182.583551%
C84381431.694714%
D84387078.378763%

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 8748 8439 152 152 1.74% 1.80%
B 8748 8438 64 64 0.73% 0.76%
C 8748 8440 1 1 0.01% 0.01%
D 8748 8438 569 569 6.50% 6.74%

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 0 13 1967233 10102.12 967 945 194.6
A 6 16 139586 712.29 967 945 194.6
A 5 168 88914 451.95 967 945 194.6
B 0 190 276723 1505.96 971 945 183.1
B 3 64 231492 1258.96 971 945 183.1
B 15 33 154521 838.64 971 945 183.1
C 14 238 152597 691.89 940 946 219.2
C 15 208 37716 167.76 940 946 219.2
C 8 128 13526 57.39 940 946 219.2
D 1 52 2555683 10930.6 913 889 233.7
D 11 176 524936 2242.12 913 889 233.7
D 7 80 276899 1180.9 913 889 233.7

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