ASTROSAT CZTI

Data Quality Report

Orbit 25408

Creation date: 2024-06-27T19:17:20.152391
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_047T01_9000003714_25408cztM0_level2.evt modeM0/AS1A09_047T01_9000003714_25408cztM0_level2_quad_clean.evt
Size (bytes)540,213,120103,841,280
Size515.2 MB 99.0 MB
Events in quadrant A3,496,747683,100
Events in quadrant B4,085,886679,017
Events in quadrant C3,386,516651,307
Events in quadrant D4,903,365630,550

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149060
B0167430
C0147450
D0192450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7197330.458524%
B71981261.750486%
C7198630.875243%
D71983534.904140%

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 7457 7198 0 0 0.00% 0.00%
B 7458 7199 50 50 0.67% 0.69%
C 7458 7199 2 2 0.03% 0.03%
D 7458 7198 308 308 4.13% 4.28%

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 6 16 113901 640.07 874 856 176.6
A 13 254 10590 55.11 874 856 176.6
A 3 137 7974 40.3 874 856 176.6
B 3 112 617815 3747.24 859 838 164.6
B 0 229 59743 357.76 859 838 164.6
B 0 190 21652 126.41 859 838 164.6
C 14 238 133294 686.51 823 829 193.0
C 8 128 14822 72.52 823 829 193.0
C 7 247 14391 70.29 823 829 193.0
D 7 238 1185914 5963.71 825 801 198.7
D 8 195 360691 1811.03 825 801 198.7
D 12 233 154424 773.06 825 801 198.7

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