ASTROSAT CZTI

Data Quality Report

Orbit 26300

Creation date: 2024-06-27T19:27:10.999835
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/AS1A09_143T03_9000003794_26300cztM0_level2.evt modeM0/AS1A09_143T03_9000003794_26300cztM0_level2_quad_clean.evt
Size (bytes)457,490,880113,178,240
Size436.3 MB 107.9 MB
Events in quadrant A3,267,112746,482
Events in quadrant B3,316,224780,957
Events in quadrant C3,543,127741,753
Events in quadrant D3,311,366729,687

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135000
B0137490
C0144520
D0136910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6142350.569847%
B6142560.911755%
C61421542.507327%
D6142310.504722%

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 7502 6143 1 1 0.01% 0.02%
B 7502 6143 0 0 0.00% 0.00%
C 7502 6143 32 32 0.43% 0.52%
D 7502 6143 4 4 0.05% 0.07%

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 0 13 36615 215.93 835 823 165.8
A 7 192 11176 62.46 835 823 165.8
A 13 254 10332 57.37 835 823 165.8
B 12 111 18521 111.69 848 829 158.4
B 11 111 16129 96.59 848 829 158.4
B 14 111 14895 88.8 848 829 158.4
C 14 238 133074 692.1 822 831 191.1
C 4 254 113045 587.28 822 831 191.1
C 3 233 98113 509.13 822 831 191.1
D 1 52 131667 666.84 827 810 196.2
D 2 234 24884 122.68 827 810 196.2
D 11 176 16936 82.18 827 810 196.2

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