ASTROSAT CZTI

Data Quality Report

Orbit 32658

Creation date: 2024-06-27T20:40:33.623808
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/AS1A10_057T03_9000004722_32658cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32658cztM0_level2_quad_clean.evt
Size (bytes)928,486,08054,360,000
Size885.5 MB 51.8 MB
Events in quadrant A6,193,752328,702
Events in quadrant B7,167,534336,490
Events in quadrant C5,670,461330,103
Events in quadrant D8,749,895295,961

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215603
B0248702
C0202512
D0295022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5043156931.112433%
B5043135026.769780%
C504384716.795558%
D5043237747.134642%

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 7107 5044 1517 1517 21.35% 30.08%
B 7107 5044 1139 1139 16.03% 22.58%
C 7107 5044 667 667 9.39% 13.22%
D 7107 5044 2364 2364 33.26% 46.87%

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 15 249 4103951 39936.24 514 506 102.7
A 9 191 43466 418.1 514 506 102.7
A 0 215 9778 90.24 514 506 102.7
B 3 43 2240573 20489.16 581 571 109.3
B 0 219 768626 7025.35 581 571 109.3
B 12 1 515562 4710.59 581 571 109.3
C 8 35 1036256 8047.26 554 559 128.7
C 10 9 672705 5222.51 554 559 128.7
C 0 10 617546 4793.93 554 559 128.7
D 12 33 3254451 29983.63 458 450 108.5
D 12 222 1451350 13369.16 458 450 108.5
D 7 80 431208 3969.17 458 450 108.5

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