ASTROSAT CZTI

Data Quality Report

Orbit 20190108_T03_070T03_9000002636_level2

Creation date: 2024-11-14T16:25:17.326563
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/AS1T03_070T03_9000002636cztM0_level2.fits modeM0/AS1T03_070T03_9000002636cztM0_level2_quad_clean.evt
Size (bytes)88,856,64058,394,880
Size84.7 MB 55.7 MB
Events in quadrant A544,198293,803
Events in quadrant B510,148291,399
Events in quadrant C524,430275,995
Events in quadrant D462,760256,569

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193350
B0212860
C0194350
D0204160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9364680.726185%
B93643313.534814%
C93641081.153353%
D93641191.270824%

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 11374 9363 0 0 0.00% 0.00%
B 11374 9341 0 0 0.00% 0.00%
C 11374 9362 0 0 0.00% 0.00%
D 11374 9363 0 0 0.00% 0.00%

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 29 484 9.34 141 132 37.7
A 9 19 458 8.65 141 132 37.7
A 7 110 449 8.41 141 132 37.7
B 2 9 454 11.12 134 128 29.3
B 2 8 359 7.88 134 128 29.3
B 5 232 346 7.44 134 128 29.3
C 12 241 373 6.6 138 130 36.8
C 3 158 367 6.43 138 130 36.8
C 9 233 363 6.32 138 130 36.8
D 6 231 366 6.66 131 120 36.9
D 6 67 340 5.96 131 120 36.9
D 7 3 330 5.69 131 120 36.9

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