ASTROSAT CZTI

Data Quality Report

Orbit 27009

Creation date: 2024-06-27T19:35:31.419232
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/AS1A09_145T01_9000003900_27009cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_27009cztM0_level2_quad_clean.evt
Size (bytes)565,073,280109,249,920
Size538.9 MB 104.2 MB
Events in quadrant A5,310,759708,164
Events in quadrant B3,497,150753,463
Events in quadrant C3,515,668726,812
Events in quadrant D4,370,408687,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200020
B0144000
C0144310
D0170530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61944968.007749%
B6194711.146271%
C61941221.969648%
D61942914.698095%

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 7499 6194 334 334 4.45% 5.39%
B 7499 6194 2 2 0.03% 0.03%
C 7499 6194 0 0 0.00% 0.00%
D 7499 6194 232 232 3.09% 3.75%

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 14 235 1281819 7520.44 855 844 170.3
A 6 16 712246 4176.55 855 844 170.3
A 8 192 18434 103.27 855 844 170.3
B 0 189 23710 139.71 880 862 163.5
B 0 219 20538 120.31 880 862 163.5
B 3 64 20119 117.75 880 862 163.5
C 14 238 140823 699.52 862 873 200.1
C 2 16 7080 31.02 862 873 200.1
C 15 208 6047 25.86 862 873 200.1
D 12 233 385748 1944.43 839 821 198.0
D 11 176 344450 1735.82 839 821 198.0
D 1 239 246543 1241.25 839 821 198.0

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