ASTROSAT CZTI

Data Quality Report

Orbit 17919

Creation date: 2024-06-27T17:42:35.557847
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/AS1A05_096T06_9000002668_17919cztM0_level2.evt modeM0/AS1A05_096T06_9000002668_17919cztM0_level2_quad_clean.evt
Size (bytes)447,808,320125,832,960
Size427.1 MB 120.0 MB
Events in quadrant A3,057,742876,192
Events in quadrant B3,472,064891,023
Events in quadrant C3,209,162827,174
Events in quadrant D3,411,470794,020

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130221
B0141741
C0135032
D0144091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6057360.594354%
B60581592.624629%
C6057580.957570%
D60572644.358593%

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 7432 6059 11 11 0.15% 0.18%
B 7433 6060 69 69 0.93% 1.14%
C 7432 6059 0 0 0.00% 0.00%
D 7432 6059 232 232 3.12% 3.83%

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 107401 706.43 761 748 151.0
A 4 2 13273 82.96 761 748 151.0
A 0 226 6797 40.07 761 748 151.0
B 15 222 359486 2520.33 763 746 142.3
B 0 244 44745 309.12 763 746 142.3
B 0 219 20735 140.43 763 746 142.3
C 3 233 278119 1675.72 715 720 165.5
C 14 238 114118 685.02 715 720 165.5
C 9 54 13654 78.13 715 720 165.5
D 7 238 637881 3440.26 698 683 185.2
D 5 222 30449 160.71 698 683 185.2
D 10 70 26451 139.12 698 683 185.2

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