ASTROSAT CZTI

Data Quality Report

Orbit 13022

Creation date: 2024-06-27T16:35:11.334372
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/AS1A04_216T01_9000001916_13022cztM0_level2.evt modeM0/AS1A04_216T01_9000001916_13022cztM0_level2_quad_clean.evt
Size (bytes)540,835,20086,904,000
Size515.8 MB 82.9 MB
Events in quadrant A3,649,579554,341
Events in quadrant B4,528,495522,628
Events in quadrant C3,027,317565,303
Events in quadrant D4,715,944518,891

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153033
B0179932
C0136322
D0188402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67471622.401067%
B67476559.708018%
C6747110.163035%
D67473725.513562%

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 7808 6749 109 109 1.40% 1.62%
B 7808 6748 464 464 5.94% 6.88%
C 7808 6749 1 1 0.01% 0.01%
D 7808 6749 307 307 3.93% 4.55%

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 15 223 249559 1579.2 772 758 157.5
A 12 189 158557 1001.59 772 758 157.5
A 15 239 109362 689.34 772 758 157.5
B 4 239 1432848 10386.29 732 714 137.9
B 3 64 145708 1051.54 732 714 137.9
B 0 219 41419 295.21 732 714 137.9
C 14 234 11994 62.98 767 770 178.2
C 8 128 10630 55.33 767 770 178.2
C 12 4 5942 29.02 767 770 178.2
D 1 52 1872959 10594.11 736 716 176.7
D 8 195 33442 185.18 736 716 176.7
D 2 234 22979 125.98 736 716 176.7

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