ASTROSAT CZTI

Data Quality Report

Orbit 26058

Creation date: 2024-06-27T19:24:22.080044
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/AS1A09_142T01_9000003766_26058cztM0_level2.evt modeM0/AS1A09_142T01_9000003766_26058cztM0_level2_quad_clean.evt
Size (bytes)320,538,24043,104,960
Size305.7 MB 41.1 MB
Events in quadrant A1,687,556289,443
Events in quadrant B1,710,893290,324
Events in quadrant C1,682,795276,709
Events in quadrant D4,399,076212,070

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070250
B070790
C069790
D0152430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3317451.356648%
B3317561.688273%
C3317712.140488%
D3316138741.827503%

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 3857 3317 0 0 0.00% 0.00%
B 3857 3317 0 0 0.00% 0.00%
C 3857 3317 0 0 0.00% 0.00%
D 3855 3315 1149 1149 29.81% 34.66%

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 20871 232.72 431 422 87.9
A 13 254 4716 48.87 431 422 87.9
A 3 137 3955 40.21 431 422 87.9
B 12 17 13844 161.7 423 411 83.1
B 12 111 9783 112.82 423 411 83.1
B 0 219 9549 110.0 423 411 83.1
C 14 238 63826 658.23 408 410 96.3
C 8 208 19452 197.65 408 410 96.3
C 3 233 6371 61.87 408 410 96.3
D 1 3 2787723 30732.78 369 359 90.7
D 1 52 60266 660.52 369 359 90.7
D 12 6 56260 616.35 369 359 90.7

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