ASTROSAT CZTI

Data Quality Report

Orbit 20200304_A07_001T04_9000003552_level2

Creation date: 2020-03-06T15:45:51.803935
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/AS1A07_001T04_9000003552cztM0_level2_bc.evt modeM0/AS1A07_001T04_9000003552cztM0_level2_quad_clean.evt
Size (bytes)387,486,720174,571,200
Size369.5 MB 166.5 MB
Events in quadrant A1,963,0571,270,844
Events in quadrant B2,438,9561,267,964
Events in quadrant C2,035,6661,186,306
Events in quadrant D4,676,662938,122

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186760
B0202380
C0192570
D0353380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89801191.325167%
B89801892.104677%
C89802032.260579%
D8980266829.710468%

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 11365 8980 0 0 0.00% 0.00%
B 11365 8980 30 30 0.26% 0.33%
C 11365 8980 8 8 0.07% 0.09%
D 11365 8901 166 166 1.46% 1.86%

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 15554 132.84 508 500 113.3
A 0 226 3388 25.48 508 500 113.3
A 12 194 3267 24.42 508 500 113.3
B 4 200 252377 2574.91 506 496 97.8
B 0 197 185209 1888.27 506 496 97.8
B 0 245 25262 253.18 506 496 97.8
C 0 10 161293 1425.01 473 472 112.9
C 7 221 28247 246.11 473 472 112.9
C 0 239 15306 131.44 473 472 112.9
D 12 218 2590689 26861.7 394 381 96.4
D 2 82 149090 1542.12 394 381 96.4
D 1 52 116388 1203.0 394 381 96.4

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