ASTROSAT CZTI

Data Quality Report

Orbit 20190806_A06_009T02_9000003076_level2

Creation date: 2019-09-29T00:49:13.184586
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/AS1A06_009T02_9000003076cztM0_level2_bc.evt modeM0/AS1A06_009T02_9000003076cztM0_level2_quad_clean.evt
Size (bytes)397,690,56094,633,920
Size379.3 MB 90.2 MB
Events in quadrant A1,613,660619,825
Events in quadrant B1,704,012622,280
Events in quadrant C1,351,667609,543
Events in quadrant D6,898,933533,510

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148700
B0153540
C0139950
D0339220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69011001.449065%
B6901961.391103%
C6901440.637589%
D6900148221.478261%

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 7775 6900 11 11 0.14% 0.16%
B 7775 6900 8 8 0.10% 0.12%
C 7775 6901 0 0 0.00% 0.00%
D 7774 6899 312 312 4.01% 4.52%

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 5 16 256410 3234.12 349 341 79.2
A 5 98 14329 176.67 349 341 79.2
A 12 194 2360 25.5 349 341 79.2
B 7 220 113077 1606.18 351 342 70.2
B 0 189 57832 819.08 351 342 70.2
B 3 64 37862 534.56 351 342 70.2
C 3 233 21175 252.63 338 335 82.5
C 7 247 11196 131.66 338 335 82.5
C 8 128 9612 112.46 338 335 82.5
D 1 239 2300640 30565.43 308 296 75.3
D 1 20 1620481 21527.93 308 296 75.3
D 1 52 896340 11906.03 308 296 75.3

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