ASTROSAT CZTI

Data Quality Report

Orbit 42357

Creation date: 2024-06-27T22:39:23.697221
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_102T01_9000005798_42357cztM0_level2.fits modeM0/AS1A12_102T01_9000005798_42357cztM0_level2_quad_clean.evt
Size (bytes)354,977,28096,255,360
Size338.5 MB 91.8 MB
Events in quadrant A3,406,919666,544
Events in quadrant B2,661,232671,147
Events in quadrant C2,581,962634,379
Events in quadrant D4,074,281569,014

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135012
B0113512
C0108182
D0157242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5341210.393185%
B5341320.599139%
C534120.037446%
D53412845.317356%

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 7314 5342 16 16 0.22% 0.30%
B 7314 5342 20 20 0.27% 0.37%
C 7314 5342 0 0 0.00% 0.00%
D 7314 5342 237 237 3.24% 4.44%

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 560533 4441.52 621 610 126.1
A 15 235 287940 2279.21 621 610 126.1
A 13 248 119728 944.89 621 610 126.1
B 5 172 54545 473.3 609 592 114.0
B 3 112 52945 459.26 609 592 114.0
B 4 81 50673 439.33 609 592 114.0
C 15 214 223588 1599.93 601 604 139.4
C 15 111 9198 61.66 601 604 139.4
C 7 247 7997 53.05 601 604 139.4
D 1 52 621206 4274.56 594 577 145.2
D 12 233 574721 3954.39 594 577 145.2
D 12 6 148530 1019.02 594 577 145.2

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