ASTROSAT CZTI

Data Quality Report

Orbit 42086

Creation date: 2024-06-27T22:34:21.289176
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/AS1A12_099T01_9000005716_42086cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_42086cztM0_level2_quad_clean.evt
Size (bytes)42,678,72012,280,320
Size40.7 MB 11.7 MB
Events in quadrant A490,72880,832
Events in quadrant B340,39783,773
Events in quadrant C349,62978,740
Events in quadrant D337,63769,510

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0140
C0150
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02584644
B02355804
C02074566
D02193648

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226
B0228
C0197
D0213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75030.400000%
B74920.267023%
C75410.132626%
D72230.415512%

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 965 849 2 2 0.21% 0.24%
B 979 822 1 1 0.10% 0.12%
C 953 843 0 0 0.00% 0.00%
D 959 819 3 3 0.31% 0.37%

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 10 83 135514 7375.86 79 78 18.4
A 15 222 44873 2439.54 79 78 18.4
A 13 6 2063 108.1 79 78 18.4
B 5 255 20545 1165.42 79 77 17.6
B 3 112 5759 323.52 79 77 17.6
B 12 111 1981 108.41 79 77 17.6
C 15 214 35620 1734.7 80 80 20.5
C 13 61 504 20.7 80 80 20.5
C 12 249 239 7.76 80 80 20.5
D 13 112 17043 835.11 75 73 20.3
D 5 223 12716 622.18 75 73 20.3
D 1 52 8965 437.58 75 73 20.3

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