ASTROSAT CZTI

Data Quality Report

Orbit 33568

Creation date: 2024-06-27T20:50:14.650068
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_060T01_9000004808_33568cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33568cztM0_level2_quad_clean.evt
Size (bytes)494,081,28069,468,480
Size471.2 MB 66.3 MB
Events in quadrant A2,683,962448,175
Events in quadrant B3,527,366454,733
Events in quadrant C4,343,694426,157
Events in quadrant D4,060,353414,370

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110323
B0135092
C0167712
D0155452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5138230.447645%
B51383136.091865%
C51383005.838848%
D51381332.588556%

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 7231 5139 20 20 0.28% 0.39%
B 7231 5139 257 257 3.55% 5.00%
C 7231 5139 257 257 3.55% 5.00%
D 7231 5139 126 126 1.74% 2.45%

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 15 169 166073 1286.16 650 638 128.6
A 13 254 9798 71.21 650 638 128.6
A 3 137 6051 42.08 650 638 128.6
B 5 172 903275 7505.25 640 626 120.3
B 0 190 38526 315.13 640 626 120.3
B 4 170 28356 230.57 640 626 120.3
C 3 233 751323 5174.1 629 635 145.1
C 14 254 658002 4530.89 629 635 145.1
C 0 10 250225 1720.29 629 635 145.1
D 8 195 795257 5261.12 628 614 151.0
D 13 249 314635 2079.05 628 614 151.0
D 2 250 255520 1687.66 628 614 151.0

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