ASTROSAT CZTI

Data Quality Report

Orbit 26995

Creation date: 2024-06-27T19:35:23.051116
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_26995cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26995cztM0_level2_quad_clean.evt
Size (bytes)628,868,160115,750,080
Size599.7 MB 110.4 MB
Events in quadrant A6,179,803752,956
Events in quadrant B3,605,367818,610
Events in quadrant C3,444,059781,166
Events in quadrant D5,406,109729,011

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227080
B0147160
C0141390
D0201090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A606865010.711931%
B60681001.647989%
C60681111.829268%
D60684988.206987%

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 7418 6068 491 491 6.62% 8.09%
B 7418 6068 35 35 0.47% 0.58%
C 7418 6068 5 5 0.07% 0.08%
D 7418 6068 391 391 5.27% 6.44%

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 1697654 10264.83 820 810 165.3
A 6 16 1307666 7905.65 820 810 165.3
A 8 192 15362 88.03 820 810 165.3
B 10 245 262306 1630.21 854 837 160.4
B 12 111 17978 106.87 854 837 160.4
B 11 111 16068 94.96 854 837 160.4
C 14 238 133683 676.47 830 842 196.4
C 15 208 43619 217.84 830 842 196.4
C 8 128 12682 60.29 830 842 196.4
D 1 52 1334032 6987.76 798 782 190.8
D 5 222 671575 3515.72 798 782 190.8
D 2 250 175085 913.55 798 782 190.8

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