ASTROSAT CZTI

Data Quality Report

Orbit 18888

Creation date: 2024-06-27T17:56:08.043324
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/AS1A06_003T07_9000002818_18888cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18888cztM0_level2_quad_clean.evt
Size (bytes)460,581,12090,754,560
Size439.2 MB 86.6 MB
Events in quadrant A3,350,559593,913
Events in quadrant B3,711,820603,457
Events in quadrant C3,200,814563,318
Events in quadrant D3,260,801551,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137182
B0149692
C0132872
D0136662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6260410.654952%
B6260631.006390%
C6260550.878594%
D6260290.463259%

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 7610 6262 9 9 0.12% 0.14%
B 7610 6262 9 9 0.12% 0.14%
C 7610 6262 0 0 0.00% 0.00%
D 7610 6262 8 8 0.11% 0.13%

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 6 16 148972 897.19 829 816 165.1
A 13 254 9451 52.29 829 816 165.1
A 0 226 7214 38.74 829 816 165.1
B 12 18 331384 2164.42 826 807 152.7
B 0 190 50088 322.66 826 807 152.7
B 0 189 41616 267.19 826 807 152.7
C 14 238 125887 694.99 782 787 180.0
C 3 233 27195 146.71 782 787 180.0
C 13 61 5528 26.34 782 787 180.0
D 7 238 146246 764.9 792 772 190.2
D 9 1 43161 222.88 792 772 190.2
D 2 234 22559 114.56 792 772 190.2

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