ASTROSAT CZTI

Data Quality Report

Orbit 20210220_A10_053T19_9000004190_level2

Creation date: 2021-02-22T10:09:55.806467
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_053T19_9000004190cztM0_level2_bc.evt modeM0/AS1A10_053T19_9000004190cztM0_level2_quad_clean.evt
Size (bytes)350,755,20098,006,400
Size334.5 MB 93.5 MB
Events in quadrant A1,452,647648,078
Events in quadrant B2,028,122650,168
Events in quadrant C3,042,030624,905
Events in quadrant D3,648,572588,850

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137530
B0159760
C0194680
D0215380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6532420.642988%
B65321482.265769%
C65322123.245560%
D65323996.108389%

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 7616 6532 0 0 0.00% 0.00%
B 7616 6531 9 9 0.12% 0.14%
C 7616 6531 0 0 0.00% 0.00%
D 7616 6531 102 102 1.34% 1.56%

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 13 254 12670 148.87 376 368 82.6
A 0 226 2356 24.06 376 368 82.6
A 12 194 2241 22.67 376 368 82.6
B 5 255 220681 3021.57 377 370 72.9
B 0 183 194512 2662.66 377 370 72.9
B 0 229 72152 984.49 377 370 72.9
C 3 233 1635835 18862.11 362 361 86.7
C 2 114 13481 151.31 362 361 86.7
C 13 61 2195 21.15 362 361 86.7
D 1 52 1466006 17542.52 359 348 83.5
D 8 195 480603 5748.19 359 348 83.5
D 2 250 103333 1232.63 359 348 83.5

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