ASTROSAT CZTI

Data Quality Report

Orbit 24837

Creation date: 2024-06-27T19:10:27.068720
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/AS1A08_003T03_9000003632_24837cztM0_level2.evt modeM0/AS1A08_003T03_9000003632_24837cztM0_level2_quad_clean.evt
Size (bytes)459,691,20082,863,360
Size438.4 MB 79.0 MB
Events in quadrant A3,219,001534,979
Events in quadrant B3,422,709550,975
Events in quadrant C3,268,968507,547
Events in quadrant D3,592,475485,316

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131662
B0137982
C0132992
D0145142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6165240.389294%
B6165530.859692%
C6166540.875770%
D61661051.702887%

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 7435 6166 0 0 0.00% 0.00%
B 7435 6166 9 9 0.12% 0.15%
C 7436 6167 0 0 0.00% 0.00%
D 7436 6167 78 78 1.05% 1.26%

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 13 254 9112 49.87 834 819 166.3
A 3 137 7293 38.93 834 819 166.3
A 0 226 7119 37.88 834 819 166.3
B 0 189 59946 376.77 834 817 156.9
B 4 80 50613 317.3 834 817 156.9
B 10 251 31715 196.88 834 817 156.9
C 14 238 128171 697.46 789 799 182.6
C 7 247 65713 355.46 789 799 182.6
C 13 61 5507 25.78 789 799 182.6
D 1 52 252839 1328.18 786 766 189.8
D 8 195 180750 948.34 786 766 189.8
D 5 222 144881 759.34 786 766 189.8

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