ASTROSAT CZTI

Data Quality Report

Orbit 20211025_A11_088T02_9000004740_level2

Creation date: 2021-10-27T09:15:17.676622
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/AS1A11_088T02_9000004740cztM0_level2_bc.evt modeM0/AS1A11_088T02_9000004740cztM0_level2_quad_clean.evt
Size (bytes)806,952,960125,196,480
Size769.6 MB 119.4 MB
Events in quadrant A2,453,898765,249
Events in quadrant B3,858,826755,221
Events in quadrant C3,628,848753,059
Events in quadrant D13,680,453691,841

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242710
B0300080
C0282300
D0614270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11943150.125597%
B119435004.186553%
C119432542.126769%
D11943291624.415976%

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 14719 11943 0 0 0.00% 0.00%
B 14719 11943 40 40 0.27% 0.33%
C 14719 11943 24 24 0.16% 0.20%
D 14719 11943 903 903 6.13% 7.56%

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 9 143 75013 546.63 600 589 136.2
A 13 254 22316 159.58 600 589 136.2
A 15 174 19302 137.44 600 589 136.2
B 5 172 586913 4936.19 591 577 118.8
B 15 201 444319 3735.73 591 577 118.8
B 0 219 154359 1294.64 591 577 118.8
C 3 233 851207 6359.97 576 570 133.7
C 0 10 279859 2088.16 576 570 133.7
C 1 241 81983 608.7 576 570 133.7
D 8 195 4792916 35135.9 535 520 136.4
D 12 227 2401363 17602.01 535 520 136.4
D 10 203 1559967 11433.23 535 520 136.4

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