ASTROSAT CZTI

Data Quality Report

Orbit 20190520_A05_176T04_9000002942_level2

Creation date: 2019-05-21T10:26:41.345377
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/AS1A05_176T04_9000002942cztM0_level2_bc.evt modeM0/AS1A05_176T04_9000002942cztM0_level2_quad_clean.evt
Size (bytes)310,708,800129,346,560
Size296.3 MB 123.4 MB
Events in quadrant A1,861,790833,898
Events in quadrant B1,977,878841,196
Events in quadrant C1,934,833819,156
Events in quadrant D2,989,009773,371

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192360
B0197320
C0197590
D0235290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9366480.512492%
B9366820.875507%
C93661151.227845%
D93664805.124920%

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 10996 9366 2 2 0.02% 0.02%
B 10996 9366 11 11 0.10% 0.12%
C 10996 9367 0 0 0.00% 0.00%
D 10996 9366 178 178 1.62% 1.90%

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 40905 389.78 466 456 103.8
A 11 47 23801 224.96 466 456 103.8
A 13 254 6869 61.8 466 456 103.8
B 7 220 42301 452.18 468 456 92.5
B 3 64 39211 418.79 468 456 92.5
B 0 230 24703 262.02 468 456 92.5
C 3 233 146873 1319.08 454 450 111.0
C 8 208 25299 223.86 454 450 111.0
C 9 221 8181 69.65 454 450 111.0
D 7 238 971806 8988.19 452 435 108.1
D 1 52 121074 1116.28 452 435 108.1
D 2 16 72751 669.15 452 435 108.1

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