ASTROSAT CZTI

Data Quality Report

Orbit 20822

Creation date: 2024-06-27T18:19:57.795763
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_013T01_9000003070_20822cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20822cztM0_level2_quad_clean.evt
Size (bytes)154,998,72027,878,400
Size147.8 MB 26.6 MB
Events in quadrant A839,313185,122
Events in quadrant B896,206184,422
Events in quadrant C840,040179,665
Events in quadrant D1,997,582166,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395
B0382
C0439
D0395

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03952410
B04199504
C03951433
D087861849

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B111
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175620.113895%
B175130.171331%
C1745110.630372%
D172547427.478261%

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 4293 1769 0 0 0.00% 0.00%
B 4291 1768 0 0 0.00% 0.00%
C 4292 1760 0 0 0.00% 0.00%
D 4290 1725 462 462 10.77% 26.78%

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 0 226 1900 36.31 218 213 46.5
A 3 137 1742 32.91 218 213 46.5
A 12 194 1542 28.6 218 213 46.5
B 0 189 20412 469.1 213 208 43.1
B 7 220 10434 237.43 213 208 43.1
B 0 219 9738 221.27 213 208 43.1
C 14 238 33052 664.34 206 207 49.4
C 13 61 1539 26.94 206 207 49.4
C 7 247 607 8.09 206 207 49.4
D 1 52 1170712 25442.8 182 176 46.0
D 1 20 112626 2444.22 182 176 46.0
D 9 1 19111 411.57 182 176 46.0

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