ASTROSAT CZTI

Data Quality Report

Orbit 38723

Creation date: 2024-06-27T21:55:36.268154
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_054T01_9000005392_38723cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38723cztM0_level2_quad_clean.evt
Size (bytes)498,228,48085,639,680
Size475.1 MB 81.7 MB
Events in quadrant A3,009,036637,334
Events in quadrant B2,678,801661,776
Events in quadrant C2,513,474621,631
Events in quadrant D9,839,953310,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120553
B0111692
C0105032
D0327692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5162611.181713%
B5162270.523053%
C516230.058117%
D5162270552.402170%

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 7285 5163 48 48 0.66% 0.93%
B 7285 5163 15 15 0.21% 0.29%
C 7285 5163 0 0 0.00% 0.00%
D 7285 5163 2343 2343 32.16% 45.38%

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 383034 3164.04 599 589 120.9
A 9 143 240314 1983.29 599 589 120.9
A 13 248 64269 526.84 599 589 120.9
B 5 184 198454 1748.63 599 586 113.2
B 4 171 66164 579.54 599 586 113.2
B 0 213 20292 174.15 599 586 113.2
C 15 214 216405 1606.55 582 588 134.3
C 15 208 19004 137.09 582 588 134.3
C 0 10 4101 26.15 582 588 134.3
D 2 16 6390581 52278.86 496 482 122.2
D 12 235 672328 5496.53 496 482 122.2
D 12 227 503450 4114.9 496 482 122.2

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