ASTROSAT CZTI

Data Quality Report

Orbit 48457

Creation date: 2024-09-13T07:06:10.912034
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/AS1A13_029T01_9000006426_48457cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48457cztM0_level2_quad_clean.evt
Size (bytes)507,551,040114,891,840
Size484.0 MB 109.6 MB
Events in quadrant A7,384,085762,127
Events in quadrant B4,036,579777,951
Events in quadrant C3,227,840755,619
Events in quadrant D3,587,213687,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266902
B0170852
C0147623
D0160622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71182964.158471%
B71192884.045512%
C7118410.576004%
D71181381.938747%

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 8808 7119 80 80 0.91% 1.12%
B 8809 7120 151 151 1.71% 2.12%
C 8808 7120 7 7 0.08% 0.10%
D 8808 7120 78 78 0.89% 1.10%

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 10 83 4351134 26669.07 782 766 163.1
A 13 254 14053 81.45 782 766 163.1
A 3 137 9171 51.53 782 766 163.1
B 12 16 752249 4741.25 784 761 158.5
B 8 234 114452 717.29 784 761 158.5
B 5 255 33396 205.9 784 761 158.5
C 12 2 62788 334.27 780 783 185.5
C 15 208 56107 298.25 780 783 185.5
C 12 249 48369 256.53 780 783 185.5
D 5 222 276716 1408.14 771 746 196.0
D 12 2 168667 856.82 771 746 196.0
D 2 249 68089 343.62 771 746 196.0

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