ASTROSAT CZTI

Data Quality Report

Orbit 44123

Creation date: 2024-06-27T22:59:26.922713
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_012T02_9000005950_44123cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44123cztM0_level2_quad_clean.evt
Size (bytes)585,691,20094,106,880
Size558.6 MB 89.7 MB
Events in quadrant A8,611,007508,606
Events in quadrant B3,056,394700,178
Events in quadrant C3,481,783659,078
Events in quadrant D6,055,018552,496

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300061
B0131351
C0144231
D0222491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6139183729.923440%
B6139941.531194%
C61401752.850163%
D614075612.312704%

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 7129 6140 1237 1237 17.35% 20.15%
B 7129 6140 9 9 0.13% 0.15%
C 7130 6141 86 86 1.21% 1.40%
D 7130 6141 585 585 8.20% 9.53%

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 15 223 4999034 38317.26 631 618 130.4
A 10 83 1091547 8362.93 631 618 130.4
A 12 227 30241 227.09 631 618 130.4
B 5 172 107850 764.41 710 689 140.2
B 5 235 47227 331.97 710 689 140.2
B 4 173 37449 262.22 710 689 140.2
C 1 241 323338 1950.62 699 704 165.4
C 14 254 213501 1286.55 699 704 165.4
C 0 207 113615 682.65 699 704 165.4
D 1 52 1994721 11792.64 668 649 169.1
D 5 235 638552 3772.46 668 649 169.1
D 2 249 227008 1338.65 668 649 169.1

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