ASTROSAT CZTI

Data Quality Report

Orbit 16114

Creation date: 2024-06-27T17:18:12.217379
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/AS1T02_094T01_9000002380_16114cztM0_level2.evt modeM0/AS1T02_094T01_9000002380_16114cztM0_level2_quad_clean.evt
Size (bytes)310,415,04064,033,920
Size296.0 MB 61.1 MB
Events in quadrant A1,879,312429,405
Events in quadrant B2,188,098428,134
Events in quadrant C1,931,968410,774
Events in quadrant D3,140,503400,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079822
B089001
C081091
D0118871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3831180.469851%
B3831601.566171%
C3831551.435656%
D38312185.690420%

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 4207 3833 1 1 0.02% 0.03%
B 4207 3833 7 7 0.17% 0.18%
C 4207 3833 2 2 0.05% 0.05%
D 4207 3833 177 177 4.21% 4.62%

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 15 174 17806 173.94 481 470 99.7
A 0 226 4368 39.11 481 470 99.7
A 3 1 4251 37.94 481 470 99.7
B 0 189 144139 1537.33 477 465 93.5
B 7 220 74153 788.47 477 465 93.5
B 0 197 24371 255.8 477 465 93.5
C 14 238 72475 663.88 457 459 108.5
C 9 236 50043 457.09 457 459 108.5
C 0 207 16103 144.21 457 459 108.5
D 1 52 1104005 9698.22 461 446 113.8
D 5 222 155277 1360.67 461 446 113.8
D 7 38 87737 767.12 461 446 113.8

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