ASTROSAT CZTI

Data Quality Report

Orbit 20210721_A10_094T28_9000004578_level2

Creation date: 2021-07-23T12:40:06.167107
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/AS1A10_094T28_9000004578cztM0_level2_bc.evt modeM0/AS1A10_094T28_9000004578cztM0_level2_quad_clean.evt
Size (bytes)358,464,960146,655,360
Size341.9 MB 139.9 MB
Events in quadrant A1,565,7761,007,519
Events in quadrant B4,284,698942,156
Events in quadrant C1,639,424983,552
Events in quadrant D2,821,805960,075

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160130
B0275470
C0164550
D0198930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7889610.773229%
B788979310.051971%
C78891592.015465%
D78891221.546457%

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 8558 7888 0 0 0.00% 0.00%
B 8558 7886 0 0 0.00% 0.00%
C 8558 7888 1 1 0.01% 0.01%
D 8558 7887 10 10 0.12% 0.13%

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 16106 174.39 403 395 90.1
A 12 194 2903 27.84 403 395 90.1
A 12 16 2756 26.21 403 395 90.1
B 6 159 2064786 27051.1 380 371 76.3
B 12 1 598817 7841.75 380 371 76.3
B 4 80 87568 1142.59 380 371 76.3
C 3 233 91794 955.04 391 388 95.7
C 2 114 14922 151.86 391 388 95.7
C 14 254 13200 133.86 391 388 95.7
D 8 195 665148 7080.46 398 385 93.9
D 1 52 221662 2356.84 398 385 93.9
D 12 218 115962 1231.02 398 385 93.9

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