ASTROSAT CZTI

Data Quality Report

Orbit 02431

Creation date: 2024-06-27T14:17:39.842032
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/AS1T01_042T01_9000000366_02431cztM0_level2.evt modeM0/AS1T01_042T01_9000000366_02431cztM0_level2_quad_clean.evt
Size (bytes)431,879,04077,198,400
Size411.9 MB 73.6 MB
Events in quadrant A3,021,282483,813
Events in quadrant B3,035,784488,763
Events in quadrant C3,326,796473,611
Events in quadrant D3,270,649455,163

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129202
B0130071
C0138221
D0138891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6246500.800512%
B6246620.992635%
C6246410.656420%
D62461141.825168%

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 7506 6247 0 0 0.00% 0.00%
B 7506 6247 3 3 0.04% 0.05%
C 7506 6247 0 0 0.00% 0.00%
D 7506 6247 69 69 0.92% 1.10%

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 8 14 35063 222.23 765 748 154.4
A 15 236 16193 100.02 765 748 154.4
A 12 194 8717 51.61 765 748 154.4
B 0 228 33987 227.48 770 752 146.1
B 15 85 28134 187.42 770 752 146.1
B 12 111 9665 61.01 770 752 146.1
C 5 234 403364 2313.44 744 749 174.0
C 13 61 6795 34.74 744 749 174.0
C 1 3 5332 26.33 744 749 174.0
D 13 53 233614 1328.46 735 719 175.3
D 7 67 100683 570.21 735 719 175.3
D 9 66 53057 298.54 735 719 175.3

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