ASTROSAT CZTI

Data Quality Report

Orbit 25910

Creation date: 2024-06-27T19:22:42.283017
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/AS1A07_068T01_9000003756_25910cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25910cztM0_level2_quad_clean.evt
Size (bytes)512,542,080100,244,160
Size488.8 MB 95.6 MB
Events in quadrant A3,758,600679,660
Events in quadrant B3,224,326678,603
Events in quadrant C3,113,408631,867
Events in quadrant D5,018,343625,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150670
B0132790
C0129540
D0190800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60111252.079521%
B60121011.679973%
C60121061.763140%
D60122794.640719%

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 7326 6012 25 25 0.34% 0.42%
B 7327 6013 4 4 0.05% 0.07%
C 7327 6013 0 0 0.00% 0.00%
D 7327 6013 189 189 2.58% 3.14%

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 603855 3707.34 817 806 162.7
A 13 254 8575 47.76 817 806 162.7
A 0 226 7294 39.89 817 806 162.7
B 10 245 53197 346.58 797 782 151.2
B 0 229 27465 176.43 797 782 151.2
B 0 190 25970 166.55 797 782 151.2
C 14 238 123791 704.18 755 763 174.7
C 3 233 47836 269.43 755 763 174.7
C 13 61 5285 25.88 755 763 174.7
D 1 52 1790190 9767.52 771 752 183.2
D 7 80 250556 1363.54 771 752 183.2
D 13 168 34144 182.27 771 752 183.2

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