ASTROSAT CZTI

Data Quality Report

Orbit 12901

Creation date: 2024-06-27T16:33:44.603202
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/AS1A04_116T01_9000001896_12901cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12901cztM0_level2_quad_clean.evt
Size (bytes)629,256,960123,137,280
Size600.1 MB 117.4 MB
Events in quadrant A3,802,552838,405
Events in quadrant B5,794,648752,837
Events in quadrant C3,346,101833,165
Events in quadrant D5,599,615776,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162712
B0222091
C0154501
D0217671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7576680.897571%
B7576113614.994720%
C7576160.211193%
D75764045.332629%

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 7632 7578 2 2 0.03% 0.03%
B 7632 7578 535 535 7.01% 7.06%
C 7632 7578 0 0 0.00% 0.00%
D 7632 7578 346 346 4.53% 4.57%

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 12 189 121677 667.58 890 868 181.0
A 1 162 73733 402.65 890 868 181.0
A 15 174 48967 265.79 890 868 181.0
B 4 239 2254938 14796.77 809 789 152.3
B 0 85 133348 870.15 809 789 152.3
B 3 64 118360 771.76 809 789 152.3
C 13 61 6297 27.59 856 858 197.1
C 12 4 3306 12.42 856 858 197.1
C 8 128 3140 11.57 856 858 197.1
D 1 52 1237914 6139.8 837 811 201.5
D 9 85 513397 2543.99 837 811 201.5
D 8 195 194397 960.78 837 811 201.5

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