ASTROSAT CZTI

Data Quality Report

Orbit 02537

Creation date: 2024-06-27T14:19:16.715861
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/AS1T01_034T01_9000000378_02537cztM0_level2.evt modeM0/AS1T01_034T01_9000000378_02537cztM0_level2_quad_clean.evt
Size (bytes)267,016,32056,514,240
Size254.6 MB 53.9 MB
Events in quadrant A1,557,267364,324
Events in quadrant B1,620,630369,170
Events in quadrant C1,591,562366,053
Events in quadrant D3,056,674342,245

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076730
B077400
C077390
D0118830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A381230.078699%
B381250.131165%
C381250.131165%
D38121223.200420%

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 3812 3812 1 1 0.03% 0.03%
B 3812 3812 1 1 0.03% 0.03%
C 3812 3812 7 7 0.18% 0.18%
D 3812 3812 106 106 2.78% 2.78%

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 8 15 16751 200.13 392 383 81.8
A 14 238 14293 170.08 392 383 81.8
A 12 133 14201 168.95 392 383 81.8
B 5 172 32462 420.01 396 385 76.4
B 10 244 24945 321.58 396 385 76.4
B 15 85 19675 252.58 396 385 76.4
C 9 144 58066 638.87 384 385 90.3
C 0 64 8605 91.04 384 385 90.3
C 12 4 7762 81.71 384 385 90.3
D 11 131 1137072 12679.08 373 362 89.7
D 11 130 207955 2315.53 373 362 89.7
D 5 172 83277 924.85 373 362 89.7

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
Veto Counter