ASTROSAT CZTI

Data Quality Report

Orbit 35995

Creation date: 2022-07-19T01:19:12.698086
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/AS1A11_050T19_9000005156_35995cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35995cztM0_level2_quad_clean.evt
Size (bytes)490,999,680102,242,880
Size468.3 MB 97.5 MB
Events in quadrant A2,634,455699,057
Events in quadrant B3,074,859699,037
Events in quadrant C3,070,482683,466
Events in quadrant D5,709,210621,893

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115433
B0127972
C0124192
D0208552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561880.142399%
B5618821.459594%
C5618791.406194%
D561861410.929156%

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 7201 5619 0 0 0.00% 0.00%
B 7201 5619 47 47 0.65% 0.84%
C 7201 5619 50 50 0.69% 0.89%
D 7201 5618 484 484 6.72% 8.62%

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 10 83 165372 1282.71 636 622 128.4
A 13 6 9285 67.45 636 622 128.4
A 13 254 8246 59.36 636 622 128.4
B 5 255 232000 1902.02 630 614 121.7
B 5 172 209126 1713.99 630 614 121.7
B 4 171 55833 453.91 630 614 121.7
C 9 187 315898 2178.66 620 624 144.7
C 15 214 234527 1616.36 620 624 144.7
C 0 10 81227 557.0 620 624 144.7
D 1 52 1314856 9112.63 596 581 144.2
D 12 235 1122950 7782.04 596 581 144.2
D 12 227 689246 4774.91 596 581 144.2

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