ASTROSAT CZTI

Data Quality Report

Orbit 09674

Creation date: 2024-06-27T15:49:15.629499
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/AS1A02_198T01_9000001376_09674cztM0_level2.evt modeM0/AS1A02_198T01_9000001376_09674cztM0_level2_quad_clean.evt
Size (bytes)518,166,720101,802,240
Size494.2 MB 97.1 MB
Events in quadrant A3,574,341655,543
Events in quadrant B3,515,985653,638
Events in quadrant C3,152,807651,892
Events in quadrant D4,957,382617,328

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01482
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015533119
B015403124
C014834104
D020003228

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7252580.799779%
B7250540.744828%
C7255120.165403%
D72312813.886046%

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 7651 7303 1 1 0.01% 0.01%
B 7651 7305 0 0 0.00% 0.00%
C 7651 7305 0 0 0.00% 0.00%
D 7651 7302 229 229 2.99% 3.14%

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 1 162 124789 721.33 842 823 171.9
A 8 15 69459 399.38 842 823 171.9
A 1 178 45162 258.0 842 823 171.9
B 4 173 70669 432.45 841 821 161.5
B 0 219 55204 336.7 841 821 161.5
B 0 214 54102 329.88 841 821 161.5
C 13 61 6021 27.91 807 810 186.7
C 12 4 3227 12.95 807 810 186.7
C 8 222 2146 7.16 807 810 186.7
D 12 233 896940 4344.16 792 769 206.3
D 1 52 582483 2819.84 792 769 206.3
D 8 195 272159 1315.56 792 769 206.3

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