ASTROSAT CZTI

Data Quality Report

Orbit 46172

Creation date: 2024-06-27T23:19:59.576326
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/AS1T05_194T01_9000006180_46172cztM0_level2.fits modeM0/AS1T05_194T01_9000006180_46172cztM0_level2_quad_clean.evt
Size (bytes)561,127,680106,243,200
Size535.1 MB 101.3 MB
Events in quadrant A5,985,112721,915
Events in quadrant B4,639,273754,219
Events in quadrant C4,581,119658,570
Events in quadrant D5,053,954621,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221672
B0184002
C0184532
D0197512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66052443.694171%
B66051271.922786%
C66055848.841787%
D66044576.920048%

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 7605 6606 46 46 0.60% 0.70%
B 7605 6606 32 32 0.42% 0.48%
C 7605 6606 469 469 6.17% 7.10%
D 7604 6605 336 336 4.42% 5.09%

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 10 83 3082893 20633.44 724 710 149.4
A 9 191 37687 247.54 724 710 149.4
A 7 3 35181 230.76 724 710 149.4
B 3 112 1493361 10575.96 731 711 141.1
B 15 201 102506 721.25 731 711 141.1
B 4 171 84684 594.98 731 711 141.1
C 14 254 1713735 10692.29 683 686 160.2
C 12 2 121511 754.15 683 686 160.2
C 3 233 45582 280.23 683 686 160.2
D 1 52 757405 4356.14 691 666 173.7
D 5 235 570638 3281.02 691 666 173.7
D 13 249 485087 2788.55 691 666 173.7

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