ASTROSAT CZTI

Data Quality Report

Orbit 26271

Creation date: 2024-06-27T19:26:51.072417
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_079T03_9000003790_26271cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26271cztM0_level2_quad_clean.evt
Size (bytes)490,426,560116,521,920
Size467.7 MB 111.1 MB
Events in quadrant A3,942,555763,690
Events in quadrant B3,381,210804,679
Events in quadrant C3,953,499771,240
Events in quadrant D3,149,719751,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157310
B0140540
C0158760
D0135060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6268661.052967%
B6268681.084876%
C62683325.296745%
D6268220.350989%

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 7593 6269 38 38 0.50% 0.61%
B 7593 6269 11 11 0.14% 0.18%
C 7593 6269 111 111 1.46% 1.77%
D 7593 6269 2 2 0.03% 0.03%

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 13 742934 4527.07 829 815 163.9
A 13 254 11215 63.44 829 815 163.9
A 0 226 7269 39.37 829 815 163.9
B 5 172 53506 338.55 840 822 155.6
B 7 219 21307 131.64 840 822 155.6
B 12 111 17853 109.44 840 822 155.6
C 4 254 607926 3285.84 804 814 184.8
C 14 238 130916 704.14 804 814 184.8
C 3 233 45131 239.85 804 814 184.8
D 2 234 27616 138.58 814 796 193.5
D 11 176 24741 123.73 814 796 193.5
D 13 168 22958 114.51 814 796 193.5

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