ASTROSAT CZTI

Data Quality Report

Orbit 13756

Creation date: 2024-06-27T16:45:40.182130
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/AS1G08_062T01_9000002038_13756cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13756cztM0_level2_quad_clean.evt
Size (bytes)535,279,68090,144,000
Size510.5 MB 86.0 MB
Events in quadrant A4,226,202549,884
Events in quadrant B4,036,942545,842
Events in quadrant C3,497,752569,644
Events in quadrant D3,946,808548,268

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174202
B0166631
C0150811
D0164031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74102573.468286%
B74101321.781377%
C7410700.944669%
D74101011.363023%

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 7761 7411 127 127 1.64% 1.71%
B 7761 7412 23 23 0.30% 0.31%
C 7761 7412 1 1 0.01% 0.01%
D 7761 7412 32 32 0.41% 0.43%

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 9 143 483787 2661.11 885 866 181.5
A 0 23 229794 1261.5 885 866 181.5
A 11 29 60349 327.78 885 866 181.5
B 0 219 372037 2174.98 884 864 170.7
B 4 173 106533 619.19 884 864 170.7
B 4 80 37362 213.87 884 864 170.7
C 3 233 99342 482.84 868 871 203.9
C 13 61 6196 26.11 868 871 203.9
C 14 234 5261 21.53 868 871 203.9
D 1 52 191379 822.34 860 841 231.7
D 5 222 184494 792.62 860 841 231.7
D 10 157 167495 719.26 860 841 231.7

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