ASTROSAT CZTI

Data Quality Report

Orbit 36487

Creation date: 2022-06-28T10:31:43.016858
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/AS1A11_049T04_9000005210_36487cztM0_level2.evt modeM0/AS1A11_049T04_9000005210_36487cztM0_level2_quad_clean.evt
Size (bytes)465,459,84057,548,160
Size443.9 MB 54.9 MB
Events in quadrant A2,754,715348,418
Events in quadrant B3,859,335332,984
Events in quadrant C2,878,550340,561
Events in quadrant D4,215,927320,429

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117903
B0152622
C0119822
D0163982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A571660.104969%
B57163015.265920%
C5716340.594822%
D57162334.076277%

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 7299 5717 1 1 0.01% 0.02%
B 7299 5717 214 214 2.93% 3.74%
C 7299 5717 16 16 0.22% 0.28%
D 7299 5717 173 173 2.37% 3.03%

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 10 83 204434 1542.16 653 642 132.1
A 13 6 12891 92.69 653 642 132.1
A 15 223 11378 81.24 653 642 132.1
B 5 172 1123034 9131.29 638 621 122.9
B 5 255 79601 642.54 638 621 122.9
B 0 190 66365 534.85 638 621 122.9
C 15 214 246601 1669.36 630 632 147.3
C 0 10 149068 1007.41 630 632 147.3
C 12 249 21633 142.53 630 632 147.3
D 13 249 642840 4227.96 622 604 151.9
D 1 52 556107 3656.98 622 604 151.9
D 2 250 286372 1881.27 622 604 151.9

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