ASTROSAT CZTI

Data Quality Report

Orbit 36987

Creation date: 2024-06-27T21:33:54.871490
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_079T01_9000005254_36987cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36987cztM0_level2_quad_clean.evt
Size (bytes)394,565,76060,217,920
Size376.3 MB 57.4 MB
Events in quadrant A2,891,290364,061
Events in quadrant B2,949,896371,396
Events in quadrant C3,035,427368,575
Events in quadrant D2,717,560352,959

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118706
B0121512
C01220610
D01166418

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229110.210365%
B5231510.974957%
C5230771.472275%
D5224591.129403%

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 9418 5233 1 1 0.01% 0.02%
B 9418 5233 17 17 0.18% 0.32%
C 9418 5233 61 61 0.65% 1.17%
D 9418 5230 57 57 0.61% 1.09%

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 15 222 323675 2690.2 603 593 120.1
A 10 83 214589 1781.88 603 593 120.1
A 9 143 14446 115.35 603 593 120.1
B 5 255 263233 2281.46 601 585 115.1
B 4 81 142312 1231.09 601 585 115.1
B 0 221 49591 425.68 601 585 115.1
C 15 214 224627 1629.11 590 596 137.5
C 0 207 178616 1294.53 590 596 137.5
C 0 10 172083 1247.02 590 596 137.5
D 12 6 319427 2230.12 586 572 143.0
D 2 250 43665 301.4 586 572 143.0
D 2 234 23381 159.53 586 572 143.0

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