ASTROSAT CZTI

Data Quality Report

Orbit 19109

Creation date: 2024-06-27T17:59:08.856739
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/AS1T03_098T01_9000002836_19109cztM0_level2.evt modeM0/AS1T03_098T01_9000002836_19109cztM0_level2_quad_clean.evt
Size (bytes)438,261,12078,076,800
Size418.0 MB 74.5 MB
Events in quadrant A2,770,493489,981
Events in quadrant B3,171,658501,895
Events in quadrant C2,853,591487,429
Events in quadrant D4,067,833464,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123581
B0135361
C0124961
D0162871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6012410.681969%
B60121512.511643%
C6012751.247505%
D60133255.404956%

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 6777 6013 0 0 0.00% 0.00%
B 6777 6013 45 45 0.66% 0.75%
C 6777 6013 1 1 0.01% 0.02%
D 6778 6014 215 215 3.17% 3.57%

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 15 174 6648 40.91 718 703 145.3
A 0 226 6228 38.02 718 703 145.3
A 3 137 5486 32.91 718 703 145.3
B 7 220 226712 1640.12 716 699 137.8
B 6 36 79338 570.66 716 699 137.8
B 10 245 22610 159.0 716 699 137.8
C 14 238 106877 652.95 690 695 162.6
C 3 233 39524 238.77 690 695 162.6
C 0 207 11889 68.83 690 695 162.6
D 1 52 1064146 6343.53 680 662 167.6
D 12 218 282229 1679.51 680 662 167.6
D 11 176 109784 650.9 680 662 167.6

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