ASTROSAT CZTI

Data Quality Report

Orbit 40498

Creation date: 2024-06-27T22:16:49.974014
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/AS1A12_022T01_9000005540_40498cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40498cztM0_level2_quad_clean.evt
Size (bytes)919,857,600244,419,840
Size877.2 MB 233.1 MB
Events in quadrant A7,821,7761,651,446
Events in quadrant B7,281,7851,685,943
Events in quadrant C8,845,6251,636,879
Events in quadrant D8,889,8511,348,533

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334235
B0332814
C0368634
D0379534

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15608260.166581%
B15608500.320349%
C15608390.249872%
D15608178311.423629%

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 19848 15611 6 6 0.03% 0.04%
B 19848 15611 23 23 0.12% 0.15%
C 19848 15611 15 15 0.08% 0.10%
D 19848 15610 486 486 2.45% 3.11%

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 1233309 3683.25 1648 1614 334.4
A 12 189 97303 286.15 1648 1614 334.4
A 2 79 60516 176.14 1648 1614 334.4
B 4 170 435726 1389.27 1636 1591 312.5
B 0 230 151501 479.72 1636 1591 312.5
B 4 171 116558 367.9 1636 1591 312.5
C 9 146 1807694 4868.03 1609 1618 371.0
C 15 214 672153 1807.33 1609 1618 371.0
C 14 254 48143 125.4 1609 1618 371.0
D 12 227 1283800 3464.23 1514 1471 370.2
D 2 250 608740 1640.55 1514 1471 370.2
D 12 191 423361 1139.74 1514 1471 370.2

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