ASTROSAT CZTI

Data Quality Report

Orbit 08016

Creation date: 2024-06-27T15:26:53.629499
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/AS1G06_154T02_9000001102_08016cztM0_level2.evt modeM0/AS1G06_154T02_9000001102_08016cztM0_level2_quad_clean.evt
Size (bytes)484,574,400101,764,800
Size462.1 MB 97.1 MB
Events in quadrant A3,477,549638,187
Events in quadrant B3,550,246657,283
Events in quadrant C3,496,000653,260
Events in quadrant D3,662,314631,726

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152143
B0153402
C0152522
D0159432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7202650.902527%
B7202690.958067%
C7202590.819217%
D7202741.027492%

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 9502 7204 0 0 0.00% 0.00%
B 9502 7204 0 0 0.00% 0.00%
C 9502 7204 0 0 0.00% 0.00%
D 9502 7204 6 6 0.06% 0.08%

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 0 226 8550 42.05 903 885 182.3
A 12 194 7588 36.77 903 885 182.3
A 3 137 3573 14.75 903 885 182.3
B 12 111 19543 108.24 911 891 172.3
B 11 111 15774 86.37 911 891 172.3
B 14 111 11778 63.18 911 891 172.3
C 1 16 8561 37.07 893 900 206.7
C 13 61 6730 28.21 893 900 206.7
C 8 222 3880 14.42 893 900 206.7
D 11 144 213649 1005.17 885 863 211.7
D 1 52 57342 266.8 885 863 211.7
D 2 14 45845 212.49 885 863 211.7

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