ASTROSAT CZTI

Data Quality Report

Orbit 20210506_A10_071T20_9000004354_level2

Creation date: 2021-05-17T13:18:56.518603
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/AS1A10_071T20_9000004354cztM0_level2_bc.evt modeM0/AS1A10_071T20_9000004354cztM0_level2_quad_clean.evt
Size (bytes)240,382,08066,660,480
Size229.2 MB 63.6 MB
Events in quadrant A1,173,243426,612
Events in quadrant B2,915,926426,863
Events in quadrant C1,479,182379,078
Events in quadrant D1,330,087402,019

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112740
B0175180
C0147270
D0119150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5476350.639153%
B54761252.282688%
C5476154728.250548%
D5476641.168736%

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 5475 5475 0 0 0.00% 0.00%
B 5475 5475 0 0 0.00% 0.00%
C 5475 5475 0 0 0.00% 0.00%
D 5475 5475 12 12 0.22% 0.22%

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 14 239 74256 1160.37 281 274 63.8
A 8 192 9730 148.31 281 274 63.8
A 13 254 8328 126.32 281 274 63.8
B 6 159 1413964 24681.0 282 275 57.3
B 6 36 412699 7200.34 282 275 57.3
B 0 190 4772 78.51 282 275 57.3
C 14 254 290226 4720.48 249 246 61.4
C 3 233 212662 3457.84 249 246 61.4
C 2 114 9569 151.77 249 246 61.4
D 13 249 139118 2067.33 273 264 67.2
D 1 52 41887 619.7 273 264 67.2
D 2 250 33392 493.23 273 264 67.2

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