ASTROSAT CZTI

Data Quality Report

Orbit 28751

Creation date: 2024-06-27T19:55:48.653936
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_123T08_9000004126_28751cztM0_level2.evt modeM0/AS1A10_123T08_9000004126_28751cztM0_level2_quad_clean.evt
Size (bytes)751,118,40084,962,880
Size716.3 MB 81.0 MB
Events in quadrant A3,653,204535,200
Events in quadrant B3,513,689543,665
Events in quadrant C8,583,100490,608
Events in quadrant D6,507,770498,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154381
B0150161
C0306791
D0241951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72461101.518079%
B72471091.504071%
C7247150820.808610%
D724775510.418104%

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 7591 7246 20 20 0.26% 0.28%
B 7592 7247 2 2 0.03% 0.03%
C 7591 7246 981 981 12.92% 13.54%
D 7592 7247 654 654 8.61% 9.02%

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 14 239 159380 893.13 882 864 177.5
A 15 174 86917 484.85 882 864 177.5
A 13 254 15711 83.65 882 864 177.5
B 4 80 30621 179.12 870 847 166.2
B 0 190 26996 157.31 870 847 166.2
B 0 229 24191 140.44 870 847 166.2
C 3 233 5327568 28819.12 795 800 184.8
C 14 238 132778 714.03 795 800 184.8
C 4 254 12851 65.2 795 800 184.8
D 8 195 1400485 7213.92 819 796 194.0
D 1 52 1091452 5621.18 819 796 194.0
D 12 233 826658 4256.45 819 796 194.0

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