ASTROSAT CZTI

Data Quality Report

Orbit 16645

Creation date: 2024-06-27T17:25:28.471988
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/AS1A05_002T09_9000002456_16645cztM0_level2.evt modeM0/AS1A05_002T09_9000002456_16645cztM0_level2_quad_clean.evt
Size (bytes)481,818,240111,778,560
Size459.5 MB 106.6 MB
Events in quadrant A3,205,185756,168
Events in quadrant B3,759,277771,173
Events in quadrant C3,845,660717,506
Events in quadrant D3,360,962707,864

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136072
B0152741
C0155021
D0140951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6200851.370968%
B62001672.693548%
C62001372.209677%
D6200841.354839%

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 7541 6202 1 1 0.01% 0.02%
B 7541 6202 11 11 0.15% 0.18%
C 7541 6202 25 25 0.33% 0.40%
D 7541 6202 10 10 0.13% 0.16%

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 12 96 20838 122.57 825 812 163.4
A 0 226 7399 40.32 825 812 163.4
A 12 194 6163 32.75 825 812 163.4
B 15 35 416692 2726.92 824 805 152.5
B 0 198 44881 289.0 824 805 152.5
B 0 189 30468 194.5 824 805 152.5
C 7 247 576542 3270.38 775 781 176.1
C 14 238 124655 703.62 775 781 176.1
C 3 233 119864 676.4 775 781 176.1
D 5 222 160861 847.17 788 764 189.0
D 1 52 96493 506.56 788 764 189.0
D 2 33 59076 308.56 788 764 189.0

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