ASTROSAT CZTI

Data Quality Report

Orbit 00868

Creation date: 2024-06-27T14:04:03.179379
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/AS1P01_161T02_9000000124_00868cztM0_level2.evt modeM0/AS1P01_161T02_9000000124_00868cztM0_level2_quad_clean.evt
Size (bytes)988,692,48079,208,640
Size942.9 MB 75.5 MB
Events in quadrant A7,203,920503,146
Events in quadrant B7,624,957505,187
Events in quadrant C7,156,276498,117
Events in quadrant D7,553,259466,430

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257320
B0270050
C0255880
D0268170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A609490.147686%
B6094110.180505%
C6095130.213290%
D60952413.954061%

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 7389 6095 221 221 2.99% 3.63%
B 7389 6095 239 239 3.23% 3.92%
C 7390 6095 152 152 2.06% 2.49%
D 7390 6095 458 458 6.20% 7.51%

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 15 233 14388 28.09 1872 1887 445.1
A 11 79 7646 12.94 1872 1887 445.1
A 3 111 5609 8.36 1872 1887 445.1
B 0 220 86983 188.0 1955 1961 452.3
B 8 38 45992 97.36 1955 1961 452.3
B 15 255 25827 52.77 1955 1961 452.3
C 3 111 26347 48.91 1815 1880 500.3
C 3 79 21375 38.97 1815 1880 500.3
C 15 241 15176 26.58 1815 1880 500.3
D 10 102 668430 1271.53 1715 1776 524.3
D 13 169 231116 437.43 1715 1776 524.3
D 12 188 153854 290.06 1715 1776 524.3

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