ASTROSAT CZTI

Data Quality Report

Orbit 17704

Creation date: 2024-06-27T17:39:48.321654
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/AS1T03_040T01_9000002628_17704cztM0_level2.evt modeM0/AS1T03_040T01_9000002628_17704cztM0_level2_quad_clean.evt
Size (bytes)571,426,56093,024,000
Size545.0 MB 88.7 MB
Events in quadrant A3,909,813608,974
Events in quadrant B3,354,231621,958
Events in quadrant C3,229,120592,061
Events in quadrant D6,356,278524,964

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161692
B0142982
C0138562
D0234802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67273294.890739%
B6727841.248699%
C6727861.278430%
D6728106015.755054%

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 7732 6728 192 192 2.48% 2.85%
B 7732 6728 4 4 0.05% 0.06%
C 7732 6728 0 0 0.00% 0.00%
D 7733 6729 928 928 12.00% 13.79%

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 15 174 811477 4957.49 806 788 163.5
A 0 226 7083 38.49 806 788 163.5
A 12 194 6194 33.06 806 788 163.5
B 0 197 42838 271.94 812 792 154.6
B 10 245 37029 234.37 812 792 154.6
B 0 189 33379 210.76 812 792 154.6
C 14 238 118635 650.37 776 781 181.2
C 3 233 49469 268.68 776 781 181.2
C 5 218 29779 160.02 776 781 181.2
D 7 238 3450520 19155.05 738 716 180.1
D 2 152 27692 149.78 738 716 180.1
D 2 234 23162 124.63 738 716 180.1

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