ASTROSAT CZTI

Data Quality Report

Orbit 22188

Creation date: 2024-06-27T18:37:51.686788
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/AS1A07_065T01_9000003284_22188cztM0_level2.evt modeM0/AS1A07_065T01_9000003284_22188cztM0_level2_quad_clean.evt
Size (bytes)476,864,640101,931,840
Size454.8 MB 97.2 MB
Events in quadrant A3,184,037675,566
Events in quadrant B3,184,000693,283
Events in quadrant C3,127,914653,235
Events in quadrant D4,514,737621,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133321
B0133411
C0131781
D0175481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A634790.141799%
B6348220.346566%
C6348390.614367%
D63482894.552615%

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 7652 6348 0 0 0.00% 0.00%
B 7653 6349 1 1 0.01% 0.02%
C 7653 6349 0 0 0.00% 0.00%
D 7653 6349 238 238 3.11% 3.75%

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 3 1 72192 442.14 807 795 161.5
A 13 254 10966 62.99 807 795 161.5
A 0 226 6969 38.23 807 795 161.5
B 12 111 17720 113.76 807 788 148.8
B 11 111 15956 101.91 807 788 148.8
B 14 111 14461 91.87 807 788 148.8
C 14 238 124720 695.45 770 775 178.2
C 13 61 5345 25.64 770 775 178.2
C 15 78 1824 5.89 770 775 178.2
D 1 52 1365598 7546.01 751 731 180.9
D 2 136 298296 1645.16 751 731 180.9
D 2 234 21501 114.83 751 731 180.9

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