ASTROSAT CZTI

Data Quality Report

Orbit 04462

Creation date: 2024-06-27T14:42:22.818393
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/AS1G05_253T01_9000000560_04462cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04462cztM0_level2_quad_clean.evt
Size (bytes)485,827,20084,317,760
Size463.3 MB 80.4 MB
Events in quadrant A3,385,499511,644
Events in quadrant B3,647,921511,650
Events in quadrant C3,391,459516,001
Events in quadrant D3,782,233496,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01522
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015441103
B01574382
C01549883
D016573113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74331492.004574%
B74441481.988178%
C7443660.886739%
D74391301.747547%

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 7614 7485 1 1 0.01% 0.01%
B 7614 7482 1 1 0.01% 0.01%
C 7614 7485 3 3 0.04% 0.04%
D 7614 7484 44 44 0.58% 0.59%

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 0 118 13156 68.47 871 850 179.7
A 0 226 9784 49.71 871 850 179.7
A 12 194 8739 43.89 871 850 179.7
B 14 167 79126 462.85 881 860 169.1
B 15 204 39657 229.44 881 860 169.1
B 15 185 39535 228.72 881 860 169.1
C 9 247 27791 136.74 849 851 197.0
C 9 16 24471 119.89 849 851 197.0
C 14 48 13975 66.61 849 851 197.0
D 13 235 223384 1082.73 845 818 205.6
D 2 63 99043 477.84 845 818 205.6
D 12 227 89701 432.39 845 818 205.6

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