ASTROSAT CZTI

Data Quality Report

Orbit 26806

Creation date: 2024-06-27T19:33:09.867600
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_079T01_9000003864_26806cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26806cztM0_level2_quad_clean.evt
Size (bytes)499,944,960129,360,960
Size476.8 MB 123.4 MB
Events in quadrant A3,982,535852,759
Events in quadrant B3,527,175895,208
Events in quadrant C3,573,321875,252
Events in quadrant D3,631,119855,877

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160910
B0144170
C0144740
D0147940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293220.349595%
B6293771.223582%
C62931071.700302%
D6292500.794660%

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 7623 6294 3 3 0.04% 0.05%
B 7623 6294 36 36 0.47% 0.57%
C 7623 6294 15 15 0.20% 0.24%
D 7622 6293 35 35 0.46% 0.56%

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 694029 4213.86 837 823 164.5
A 6 16 33760 200.21 837 823 164.5
A 12 96 27692 163.33 837 823 164.5
B 0 189 173889 1126.42 842 823 153.6
B 10 246 26746 168.72 842 823 153.6
B 0 229 24593 154.71 842 823 153.6
C 15 208 147986 759.62 842 852 193.7
C 14 238 136000 697.74 842 852 193.7
C 2 16 8918 41.64 842 852 193.7
D 2 250 192187 967.33 841 825 197.8
D 1 52 133120 668.75 841 825 197.8
D 15 21 88432 442.85 841 825 197.8

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