ASTROSAT CZTI

Data Quality Report

Orbit 15171

Creation date: 2024-06-27T17:04:46.754666
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/AS1T02_068T01_9000002238_15171cztM0_level2.evt modeM0/AS1T02_068T01_9000002238_15171cztM0_level2_quad_clean.evt
Size (bytes)328,440,96056,027,520
Size313.2 MB 53.4 MB
Events in quadrant A2,732,691345,681
Events in quadrant B2,440,745347,782
Events in quadrant C2,309,067346,196
Events in quadrant D2,149,056331,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113952
B0100871
C096771
D095511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4627380.821266%
B4627871.880268%
C462780.172898%
D4627110.237735%

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 5718 4629 10 10 0.17% 0.22%
B 5718 4629 42 42 0.73% 0.91%
C 5718 4629 1 1 0.02% 0.02%
D 5718 4629 4 4 0.07% 0.09%

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 15 239 222989 1914.44 570 558 116.2
A 0 253 191997 1647.7 570 558 116.2
A 15 233 108026 924.97 570 558 116.2
B 3 64 134561 1213.93 569 554 110.4
B 0 189 43903 392.68 569 554 110.4
B 12 111 12630 109.39 569 554 110.4
C 3 233 128506 987.61 557 560 129.6
C 14 234 5449 37.74 557 560 129.6
C 13 61 4026 26.75 557 560 129.6
D 2 16 29964 218.47 554 537 134.7
D 2 234 15466 110.84 554 537 134.7
D 13 172 8383 58.25 554 537 134.7

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