ASTROSAT CZTI

Data Quality Report

Orbit 25713

Creation date: 2024-06-27T19:20:42.068834
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_008T06_9000003748_25713cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25713cztM0_level2_quad_clean.evt
Size (bytes)478,854,72088,568,640
Size456.7 MB 84.5 MB
Events in quadrant A3,668,571528,383
Events in quadrant B3,276,555582,022
Events in quadrant C3,213,882556,306
Events in quadrant D3,881,498541,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153740
B0140830
C0140110
D0160590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67884787.041839%
B67891632.400943%
C67891722.533510%
D67891902.798645%

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 7048 6788 143 143 2.03% 2.11%
B 7049 6789 0 0 0.00% 0.00%
C 7049 6790 0 0 0.00% 0.00%
D 7049 6789 58 58 0.82% 0.85%

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 633441 3987.11 782 764 158.7
A 4 2 15791 94.7 782 764 158.7
A 13 254 9020 52.03 782 764 158.7
B 0 245 25375 155.74 813 793 157.8
B 0 219 20929 127.58 813 793 157.8
B 12 111 19420 118.01 813 793 157.8
C 14 238 124464 672.52 779 783 183.9
C 3 233 30052 159.15 779 783 183.9
C 0 207 23304 122.46 779 783 183.9
D 1 52 418021 2190.47 788 766 190.5
D 8 195 230094 1203.9 788 766 190.5
D 7 80 165576 865.2 788 766 190.5

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