ASTROSAT CZTI

Data Quality Report

Orbit 27664

Creation date: 2024-06-27T19:42:45.468207
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_257T01_9000003976_27664cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27664cztM0_level2_quad_clean.evt
Size (bytes)586,690,56075,896,640
Size559.5 MB 72.4 MB
Events in quadrant A3,357,651473,652
Events in quadrant B3,852,232482,670
Events in quadrant C3,375,163460,107
Events in quadrant D6,715,686400,840

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142920
B0157000
C0142300
D0246170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6898560.811830%
B68981452.102059%
C6898550.797333%
D68976879.960853%

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 7853 6898 8 8 0.10% 0.12%
B 7853 6898 68 68 0.87% 0.99%
C 7853 6898 0 0 0.00% 0.00%
D 7852 6897 605 605 7.71% 8.77%

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 13 248 36212 204.46 858 840 173.0
A 13 254 11556 61.94 858 840 173.0
A 8 192 11249 60.17 858 840 173.0
B 10 245 422663 2591.07 858 837 162.8
B 15 33 40482 243.52 858 837 162.8
B 12 111 19834 116.69 858 837 162.8
C 14 238 131555 669.07 826 830 195.4
C 3 233 24951 123.46 826 830 195.4
C 13 61 5528 24.05 826 830 195.4
D 1 52 2743888 14820.62 782 763 185.1
D 7 80 863236 4659.79 782 763 185.1
D 2 250 96042 514.78 782 763 185.1

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