ASTROSAT CZTI

Data Quality Report

Orbit 35144

Creation date: 2022-03-29T17:24:28.972897
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_037T01_9000005030_35144cztM0_level2.evt modeM0/AS1A11_037T01_9000005030_35144cztM0_level2_quad_clean.evt
Size (bytes)592,306,560109,333,440
Size564.9 MB 104.3 MB
Events in quadrant A4,446,260747,067
Events in quadrant B3,669,443762,637
Events in quadrant C3,168,285752,512
Events in quadrant D6,303,185684,432

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167123
B0142652
C0126572
D0224302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52014007.690829%
B52012955.671986%
C52011122.153432%
D52014859.325130%

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 7085 5202 177 177 2.50% 3.40%
B 7085 5202 186 186 2.63% 3.58%
C 7085 5202 68 68 0.96% 1.31%
D 7085 5202 421 421 5.94% 8.09%

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 15 169 1822169 14157.58 651 641 128.7
A 10 83 89163 688.03 651 641 128.7
A 13 6 15853 118.23 651 641 128.7
B 5 172 791737 6648.2 641 627 119.0
B 5 236 265953 2229.7 641 627 119.0
B 4 232 45226 374.79 641 627 119.0
C 0 10 339432 2347.64 631 635 144.3
C 15 214 219687 1517.88 631 635 144.3
C 9 187 53081 363.42 631 635 144.3
D 8 195 2786247 18243.63 626 608 152.7
D 13 249 245650 1604.82 626 608 152.7
D 7 223 243649 1591.71 626 608 152.7

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