ASTROSAT CZTI

Data Quality Report

Orbit 42694

Creation date: 2024-06-27T22:43:08.759064
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/AS1A05_013T01_9000005822_42694cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42694cztM0_level2_quad_clean.evt
Size (bytes)332,959,68086,117,760
Size317.5 MB 82.1 MB
Events in quadrant A3,050,450581,277
Events in quadrant B2,917,416594,439
Events in quadrant C2,496,119569,214
Events in quadrant D3,467,108508,419

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119602
B0120452
C0103962
D0137472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5059490.968571%
B5059611.205772%
C5059110.217434%
D50592124.190551%

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 7062 5060 25 25 0.35% 0.49%
B 7062 5060 38 38 0.54% 0.75%
C 7062 5060 7 7 0.10% 0.14%
D 7062 5060 210 210 2.97% 4.15%

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 572253 4845.43 571 560 118.0
A 13 248 260094 2199.7 571 560 118.0
A 13 254 7951 62.64 571 560 118.0
B 0 229 250628 2310.76 563 547 108.2
B 0 168 134210 1235.05 563 547 108.2
B 5 172 132405 1218.38 563 547 108.2
C 15 214 216884 1685.45 555 559 128.3
C 14 254 69016 533.37 555 559 128.3
C 4 254 14167 106.02 555 559 128.3
D 1 47 570169 4235.59 548 532 134.5
D 2 249 287669 2135.03 548 532 134.5
D 13 249 185737 1377.11 548 532 134.5

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