ASTROSAT CZTI

Data Quality Report

Orbit 42939

Creation date: 2024-06-27T22:46:02.298507
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_143T01_9000005830_42939cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42939cztM0_level2_quad_clean.evt
Size (bytes)339,062,40085,026,240
Size323.4 MB 81.1 MB
Events in quadrant A3,277,496579,181
Events in quadrant B2,409,026596,066
Events in quadrant C2,378,573573,067
Events in quadrant D4,102,063481,011

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129282
B0105172
C0100992
D0157982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4927671.359854%
B4927531.075705%
C4927180.365334%
D492655311.226147%

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 7079 4928 55 55 0.78% 1.12%
B 7079 4928 42 42 0.59% 0.85%
C 7079 4928 15 15 0.21% 0.30%
D 7078 4927 543 543 7.67% 11.02%

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 571657 5236.34 537 526 109.1
A 15 222 335394 3070.19 537 526 109.1
A 15 237 238759 2184.21 537 526 109.1
B 4 81 163621 1587.84 538 523 102.7
B 5 172 56209 542.13 538 523 102.7
B 4 171 46805 450.58 538 523 102.7
C 15 214 214578 1723.26 537 539 124.2
C 14 254 63363 505.81 537 539 124.2
C 13 61 3611 24.73 537 539 124.2
D 10 118 893524 7314.16 507 495 122.1
D 12 233 485557 3972.8 507 495 122.1
D 1 52 327665 2679.62 507 495 122.1

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