ASTROSAT CZTI

Data Quality Report

Orbit 12200

Creation date: 2024-06-27T16:23:43.086401
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/AS1G08_010T03_9000001800_12200cztM0_level2.evt modeM0/AS1G08_010T03_9000001800_12200cztM0_level2_quad_clean.evt
Size (bytes)311,304,96049,993,920
Size296.9 MB 47.7 MB
Events in quadrant A2,224,083319,656
Events in quadrant B2,611,210311,595
Events in quadrant C1,878,137309,413
Events in quadrant D2,443,270292,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091261
B0101771
C081471
D097771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3973160.402718%
B39731964.933300%
C397320.050340%
D39731192.995218%

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 3974 3974 2 2 0.05% 0.05%
B 3974 3974 123 123 3.10% 3.10%
C 3974 3974 0 0 0.00% 0.00%
D 3974 3974 100 100 2.52% 2.52%

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 1 162 100758 983.9 500 491 101.9
A 1 178 58550 569.72 500 491 101.9
A 1 161 50180 487.59 500 491 101.9
B 4 239 566475 6224.03 479 467 90.9
B 11 51 69552 759.68 479 467 90.9
B 15 204 49137 535.19 479 467 90.9
C 5 112 24562 220.38 473 476 109.3
C 14 234 5556 46.48 473 476 109.3
C 4 175 3483 27.51 473 476 109.3
D 2 33 403605 3555.83 471 460 113.4
D 1 52 178162 1567.37 471 460 113.4
D 10 50 28535 247.63 471 460 113.4

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