ASTROSAT CZTI

Data Quality Report

Orbit 36215

Creation date: 2022-06-10T00:32:17.078489
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/AS1A11_080T02_9000005176_36215cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36215cztM0_level2_quad_clean.evt
Size (bytes)634,343,04065,747,520
Size605.0 MB 62.7 MB
Events in quadrant A3,006,941444,529
Events in quadrant B3,605,617440,443
Events in quadrant C3,266,589436,523
Events in quadrant D8,971,437294,563

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123753
B0142872
C0130832
D0303672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5341120.224677%
B53411943.632279%
C53411202.246770%
D5341195236.547463%

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 7163 5342 4 4 0.06% 0.07%
B 7163 5342 113 113 1.58% 2.12%
C 7163 5342 78 78 1.09% 1.46%
D 7163 5342 1958 1958 27.33% 36.65%

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 15 223 326601 2596.35 624 613 125.6
A 10 83 192090 1525.03 624 613 125.6
A 15 174 32196 251.55 624 613 125.6
B 0 190 506189 4335.16 617 601 116.6
B 5 172 241625 2066.66 617 601 116.6
B 4 232 184655 1578.17 617 601 116.6
C 0 10 528969 3720.91 610 615 142.0
C 15 214 224711 1578.19 610 615 142.0
C 1 23 69195 482.97 610 615 142.0
D 12 235 3435052 27319.43 510 495 125.7
D 12 227 1457937 11592.9 510 495 125.7
D 10 253 692955 5508.02 510 495 125.7

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