ASTROSAT CZTI

Data Quality Report

Orbit 34318

Creation date: 2022-02-01T21:27:22.662444
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_012T02_9000004898_34318cztM0_level2.evt modeM0/AS1A05_012T02_9000004898_34318cztM0_level2_quad_clean.evt
Size (bytes)205,752,96026,121,600
Size196.2 MB 24.9 MB
Events in quadrant A858,178183,618
Events in quadrant B957,739187,106
Events in quadrant C971,376183,277
Events in quadrant D3,330,615115,822

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036112
B039081
C039891
D0109981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163850.305250%
B1638171.037851%
C1638120.732601%
D163899360.622711%

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 3430 1639 0 0 0.00% 0.00%
B 3430 1639 5 5 0.15% 0.31%
C 3430 1639 4 4 0.12% 0.24%
D 3430 1639 848 848 24.72% 51.74%

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 10 83 13693 300.17 217 213 44.9
A 13 6 5093 108.67 217 213 44.9
A 13 254 2593 53.0 217 213 44.9
B 5 172 69671 1614.41 216 210 43.0
B 4 251 22513 518.36 216 210 43.0
B 0 190 8989 204.04 216 210 43.0
C 15 214 71935 1428.57 211 213 50.2
C 14 254 36784 728.43 211 213 50.2
C 0 10 22972 453.32 211 213 50.2
D 1 52 1945667 48441.98 142 139 40.2
D 12 227 337241 8393.55 142 139 40.2
D 8 195 202939 5049.55 142 139 40.2

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