ASTROSAT CZTI

Data Quality Report

Orbit 46294

Creation date: 2024-06-27T23:21:22.990760
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_072T02_9000006194_46294cztM0_level2.fits modeM0/AS1A13_072T02_9000006194_46294cztM0_level2_quad_clean.evt
Size (bytes)890,749,440208,229,760
Size849.5 MB 198.6 MB
Events in quadrant A11,120,1931,360,959
Events in quadrant B7,440,6531,418,633
Events in quadrant C5,943,5081,377,235
Events in quadrant D7,437,9001,227,676

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416282
B0304852
C0276162
D0322352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133102842.133734%
B133111791.344752%
C13311670.503343%
D133115424.071820%

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 14240 13312 66 66 0.46% 0.50%
B 14240 13312 10 10 0.07% 0.08%
C 14241 13313 28 28 0.20% 0.21%
D 14241 13313 414 414 2.91% 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 5150292 16936.81 1469 1434 304.0
A 15 223 257636 842.76 1469 1434 304.0
A 9 191 27204 84.77 1469 1434 304.0
B 3 112 1307221 4485.26 1465 1412 291.1
B 5 255 114230 387.51 1465 1412 291.1
B 0 190 110033 373.1 1465 1412 291.1
C 1 3 147739 425.83 1457 1463 343.5
C 12 2 98101 281.32 1457 1463 343.5
C 14 67 9769 24.18 1457 1463 343.5
D 1 52 1264592 3544.86 1420 1377 356.4
D 13 249 614127 1719.51 1420 1377 356.4
D 11 192 129872 360.59 1420 1377 356.4

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