ASTROSAT CZTI

Data Quality Report

Orbit 26991

Creation date: 2024-06-27T19:35:20.704940
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_26991cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26991cztM0_level2_quad_clean.evt
Size (bytes)635,529,60080,784,000
Size606.1 MB 77.0 MB
Events in quadrant A4,822,519507,992
Events in quadrant B3,158,531521,204
Events in quadrant C3,254,993503,252
Events in quadrant D7,594,404483,289

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184760
B0130870
C0134060
D0268420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61634397.123154%
B6163420.681486%
C61631071.736167%
D616389814.570826%

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 7218 6163 301 301 4.17% 4.88%
B 7218 6163 0 0 0.00% 0.00%
C 7218 6163 14 14 0.19% 0.23%
D 7218 6163 742 742 10.28% 12.04%

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 1270877 7919.48 794 779 160.4
A 6 16 448088 2789.12 794 779 160.4
A 8 192 17591 104.83 794 779 160.4
B 12 111 17984 111.28 807 790 154.5
B 11 111 16011 98.51 807 790 154.5
B 14 111 14091 86.08 807 790 154.5
C 14 238 126301 679.89 785 794 184.6
C 15 208 54624 291.61 785 794 184.6
C 2 16 14376 73.58 785 794 184.6
D 1 52 3759068 18663.18 753 741 201.4
D 5 222 769246 3816.26 753 741 201.4
D 2 250 115868 571.7 753 741 201.4

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