ASTROSAT CZTI

Data Quality Report

Orbit 31489

Creation date: 2024-06-27T20:26:33.887593
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/AS1A10_058T08_9000004532_31489cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31489cztM0_level2_quad_clean.evt
Size (bytes)581,814,72087,514,560
Size554.9 MB 83.5 MB
Events in quadrant A3,439,497546,799
Events in quadrant B5,683,453546,760
Events in quadrant C3,619,979537,185
Events in quadrant D4,391,455519,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014991145
B022602382
C015366146
D017903305

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B021
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01462
C01452
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71812523.509261%
B71564005.589715%
C71813074.275171%
D71582743.827885%

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 7337 7244 0 0 0.00% 0.00%
B 7325 7227 27 27 0.37% 0.37%
C 7339 7244 6 6 0.08% 0.08%
D 7338 7237 44 44 0.60% 0.61%

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 13 20479 108.39 886 865 181.0
A 13 254 12455 64.05 886 865 181.0
A 3 137 9234 46.25 886 865 181.0
B 6 159 1918195 11301.05 864 840 169.7
B 12 1 160865 943.2 864 840 169.7
B 4 80 56072 325.54 864 840 169.7
C 14 238 134959 671.16 843 846 199.8
C 0 10 102901 510.73 843 846 199.8
C 10 22 23241 112.07 843 846 199.8
D 8 195 728712 3562.38 851 829 204.3
D 12 79 98867 479.81 851 829 204.3
D 13 249 88796 430.53 851 829 204.3

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