ASTROSAT CZTI

Data Quality Report

Orbit 17490

Creation date: 2024-06-27T17:37:07.678123
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/AS1A05_194T05_9000002592_17490cztM0_level2.evt modeM0/AS1A05_194T05_9000002592_17490cztM0_level2_quad_clean.evt
Size (bytes)233,328,96043,372,800
Size222.5 MB 41.4 MB
Events in quadrant A1,515,882269,715
Events in quadrant B1,609,319274,353
Events in quadrant C1,592,557264,957
Events in quadrant D2,111,184258,572

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08620
B08614
C08616
D08515

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085231584
B086821530
C085361553
D0103221828

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A344970.202957%
B347590.258993%
C3463140.404274%
D3442401.162115%

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 4206 3699 2 2 0.05% 0.05%
B 4205 3712 2 2 0.05% 0.05%
C 4206 3694 0 0 0.00% 0.00%
D 4047 3683 32 32 0.79% 0.87%

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 15 174 9303 110.14 391 384 81.0
A 0 226 3386 37.07 391 384 81.0
A 12 194 2778 29.56 391 384 81.0
B 15 33 53196 684.1 394 384 77.2
B 12 111 8932 110.73 394 384 77.2
B 11 111 7632 93.89 394 384 77.2
C 14 238 59042 646.02 378 380 90.8
C 5 218 30469 331.36 378 380 90.8
C 3 233 9681 102.43 378 380 90.8
D 11 176 198358 1922.21 374 366 103.0
D 1 52 192494 1865.28 374 366 103.0
D 7 238 119884 1160.34 374 366 103.0

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