ASTROSAT CZTI

Data Quality Report

Orbit 15013

Creation date: 2024-06-27T17:02:33.267997
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/AS1T02_057T01_9000002212_15013cztM0_level2.evt modeM0/AS1T02_057T01_9000002212_15013cztM0_level2_quad_clean.evt
Size (bytes)501,649,92091,670,400
Size478.4 MB 87.4 MB
Events in quadrant A3,912,002575,445
Events in quadrant B4,119,031578,692
Events in quadrant C3,420,285568,043
Events in quadrant D3,253,335553,848

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162952
B0167941
C0147061
D0148741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71781492.075787%
B71783214.471998%
C71781061.476734%
D71781241.727501%

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 7679 7179 1 1 0.01% 0.01%
B 7679 7179 120 120 1.56% 1.67%
C 7679 7180 0 0 0.00% 0.00%
D 7679 7179 9 9 0.12% 0.13%

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 1 162 200093 1161.48 853 835 171.6
A 12 189 136747 792.23 853 835 171.6
A 1 178 108907 629.95 853 835 171.6
B 3 64 547958 3415.5 841 820 160.2
B 0 229 188123 1169.24 841 820 160.2
B 10 16 35983 219.5 841 820 160.2
C 3 233 220537 1166.73 818 821 188.3
C 10 22 6601 30.69 818 821 188.3
C 13 61 5930 27.13 818 821 188.3
D 12 222 34687 170.81 822 797 198.4
D 10 70 27263 133.39 822 797 198.4
D 2 234 26621 130.15 822 797 198.4

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