ASTROSAT CZTI

Data Quality Report

Orbit 29455

Creation date: 2024-06-27T20:04:18.278772
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/AS1A10_102T08_9000004240_29455cztM0_level2.evt modeM0/AS1A10_102T08_9000004240_29455cztM0_level2_quad_clean.evt
Size (bytes)592,300,80053,297,280
Size564.9 MB 50.8 MB
Events in quadrant A2,442,000373,198
Events in quadrant B2,420,574384,899
Events in quadrant C2,530,680356,335
Events in quadrant D10,242,439184,655

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098441
B098101
C0101791
D0334251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4454240.538841%
B4454370.830714%
C44541132.537045%
D4454338475.976650%

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 5754 4455 2 2 0.03% 0.04%
B 5754 4455 0 0 0.00% 0.00%
C 5754 4455 10 10 0.17% 0.22%
D 5754 4455 3185 3185 55.35% 71.49%

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 86410 706.55 609 600 121.4
A 13 254 8582 65.72 609 600 121.4
A 3 137 5548 40.74 609 600 121.4
B 12 111 13781 114.85 609 595 114.8
B 5 172 12535 103.99 609 595 114.8
B 11 111 12318 102.1 609 595 114.8
C 3 233 120673 884.14 582 588 135.8
C 14 238 108810 796.8 582 588 135.8
C 14 254 21690 155.36 582 588 135.8
D 1 52 4147230 44520.25 387 376 93.1
D 8 195 3964707 42560.7 387 376 93.1
D 7 80 368039 3947.2 387 376 93.1

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