ASTROSAT CZTI

Data Quality Report

Orbit 04405

Creation date: 2024-06-27T14:41:31.883517
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/AS1G05_230T02_9000000548_04405cztM0_level2.evt modeM0/AS1G05_230T02_9000000548_04405cztM0_level2_quad_clean.evt
Size (bytes)460,653,12084,271,680
Size439.3 MB 80.4 MB
Events in quadrant A3,135,772522,920
Events in quadrant B3,716,020513,496
Events in quadrant C3,392,699514,759
Events in quadrant D3,224,609507,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146242
B0160481
C0152851
D0151761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7093861.212463%
B70931842.594107%
C7093680.958692%
D7093751.057381%

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 7358 7094 4 4 0.05% 0.06%
B 7358 7094 70 70 0.95% 0.99%
C 7358 7094 22 22 0.30% 0.31%
D 7358 7094 42 42 0.57% 0.59%

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 50 70455 428.17 790 770 162.7
A 8 15 12136 69.84 790 770 162.7
A 12 194 8227 45.82 790 770 162.7
B 10 16 412207 2676.99 791 771 153.7
B 14 167 105780 683.24 791 771 153.7
B 7 252 30463 193.19 791 771 153.7
C 9 247 312937 1763.27 762 766 177.0
C 12 4 26112 143.16 762 766 177.0
C 9 16 24334 133.12 762 766 177.0
D 13 239 79747 426.44 763 739 185.3
D 12 233 70158 374.68 763 739 185.3
D 2 14 33766 178.26 763 739 185.3

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