ASTROSAT CZTI

Data Quality Report

Orbit 49765

Creation date: 2024-12-10T14:21:00.467239
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/AS1A13_037T01_9000006440_49765cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49765cztM0_level2_quad_clean.evt
Size (bytes)1,044,241,92047,180,160
Size995.9 MB 45.0 MB
Events in quadrant A14,285,251322,275
Events in quadrant B3,372,440607,693
Events in quadrant C8,739,61434,804
Events in quadrant D11,806,18749,350

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0463670
B0139960
C0300460
D0390600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5803551695.054282%
B58031793.084611%
C5803580299.982768%
D58035803100.000000%

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 6862 5803 5528 5528 80.56% 95.26%
B 6862 5802 90 90 1.31% 1.55%
C 6862 5802 1568 1568 22.85% 27.03%
D 6862 5802 3468 3468 50.54% 59.77%

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 5440295 53333.12 371 360 102.0
A 7 64 2827719 27719.42 371 360 102.0
A 12 50 1196726 11729.17 371 360 102.0
B 4 171 414660 3104.55 628 610 133.4
B 4 21 72788 541.19 628 610 133.4
B 4 206 66403 493.32 628 610 133.4
C 15 180 2070609 76795.25 53 51 27.0
C 15 190 1765156 65466.26 53 51 27.0
C 15 196 771086 28597.04 53 51 27.0
D 15 142 6663301 207412.99 74 70 32.1
D 7 61 2486230 77389.17 74 70 32.1
D 15 40 617423 19216.96 74 70 32.1

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