ASTROSAT CZTI

Data Quality Report

Orbit 20210605_A10_053T25_9000004440_level2

Creation date: 2021-06-07T16:53:48.673261
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_053T25_9000004440cztM0_level2_bc.evt modeM0/AS1A10_053T25_9000004440cztM0_level2_quad_clean.evt
Size (bytes)482,060,160101,975,040
Size459.7 MB 97.3 MB
Events in quadrant A2,239,623647,032
Events in quadrant B4,699,593634,997
Events in quadrant C2,022,933616,522
Events in quadrant D5,044,857590,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195450
B0278300
C0191000
D0286230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86291591.842624%
B86292963.430293%
C86292052.375710%
D86293534.090856%

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 9939 8627 32 32 0.32% 0.37%
B 9939 8628 4 4 0.04% 0.05%
C 9939 8627 0 0 0.00% 0.00%
D 9939 8627 38 38 0.38% 0.44%

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 0 13 472184 4624.35 455 445 102.0
A 13 254 15947 151.96 455 445 102.0
A 8 255 3778 32.67 455 445 102.0
B 6 159 2426819 26947.3 452 439 90.0
B 5 255 312821 3469.3 452 439 90.0
B 0 190 95520 1055.97 452 439 90.0
C 3 233 255347 2447.14 432 429 104.2
C 0 10 53822 512.56 432 429 104.2
C 2 114 16920 158.31 432 429 104.2
D 8 195 2680554 26059.46 439 424 102.8
D 13 249 342023 3321.44 439 424 102.8
D 12 218 134062 1299.39 439 424 102.8

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