ASTROSAT CZTI

Data Quality Report

Orbit 01259

Creation date: 2024-06-27T14:10:22.077443
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/AS1G04_014T02_9000000228_01259cztM0_level2.evt modeM0/AS1G04_014T02_9000000228_01259cztM0_level2_quad_clean.evt
Size (bytes)261,792,00023,607,360
Size249.7 MB 22.5 MB
Events in quadrant A1,620,967158,586
Events in quadrant B1,888,867161,483
Events in quadrant C1,751,945154,496
Events in quadrant D2,575,204139,237

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057662
B065691
C061731
D085711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134010.074627%
B1340171.268657%
C134020.149254%
D1340896.641791%

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 1339 1339 42 42 3.14% 3.14%
B 1339 1339 110 110 8.22% 8.22%
C 1339 1339 55 55 4.11% 4.11%
D 1340 1340 433 433 32.31% 32.31%

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 4 32 8598 81.97 418 420 99.8
A 8 14 3061 26.47 418 420 99.8
A 13 9 2462 20.47 418 420 99.8
B 6 53 65835 610.24 458 458 107.1
B 8 4 59095 547.32 458 458 107.1
B 15 22 12227 109.85 458 458 107.1
C 15 241 55649 463.56 431 446 119.1
C 3 111 3833 28.44 431 446 119.1
C 7 159 3159 22.78 431 446 119.1
D 12 22 844975 7004.36 388 398 120.6
D 10 84 144564 1195.62 388 398 120.6
D 13 169 116620 963.87 388 398 120.6

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