ASTROSAT CZTI

Data Quality Report

Orbit 20160622_G05_170T01_9000000510_level2

Creation date: 2025-10-31T02:21:20.416756
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/AS1G05_170T01_9000000510cztM0_level2.fits modeM0/AS1G05_170T01_9000000510cztM0_level2_quad_clean.evt
Size (bytes)133,485,120153,504,000
Size127.3 MB 146.4 MB
Events in quadrant A781,928946,076
Events in quadrant B752,678919,057
Events in quadrant C782,078898,942
Events in quadrant D671,682830,871

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355150
B0400900
C0320500
D0348040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152757404.844517%
B152698575.612679%
C152721851.211367%
D152714863.182503%

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 17016 15274 0 0 0.00% 0.00%
B 17016 15276 0 0 0.00% 0.00%
C 17016 15276 0 0 0.00% 0.00%
D 17016 15275 0 0 0.00% 0.00%

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 29 765 10.38 203 189 55.5
A 14 188 750 10.11 203 189 55.5
A 14 204 670 8.67 203 189 55.5
B 2 9 717 12.41 198 188 42.6
B 14 254 562 8.77 198 188 42.6
B 12 226 532 8.07 198 188 42.6
C 1 80 565 6.52 206 190 57.5
C 12 241 564 6.5 206 190 57.5
C 7 111 558 6.4 206 190 57.5
D 11 82 618 8.43 191 173 52.8
D 1 19 523 6.63 191 173 52.8
D 3 31 512 6.42 191 173 52.8

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