ASTROSAT CZTI

Data Quality Report

Orbit 05491

Creation date: 2024-06-27T14:55:44.880013
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/AS1A02_063T01_9000000702_05491cztM0_level2.evt modeM0/AS1A02_063T01_9000000702_05491cztM0_level2_quad_clean.evt
Size (bytes)506,165,76084,294,720
Size482.7 MB 80.4 MB
Events in quadrant A3,428,787508,948
Events in quadrant B3,895,916516,046
Events in quadrant C3,497,341510,879
Events in quadrant D3,983,046480,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016068147
B016990144
C016194102
D017772177

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01584
B01580
C01580
D01582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7710911.180285%
B77131481.918838%
C7734550.711146%
D77081321.712506%

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 8208 7783 0 0 0.00% 0.00%
B 8208 7782 1 1 0.01% 0.01%
C 8208 7783 2 2 0.02% 0.03%
D 8208 7781 48 48 0.58% 0.62%

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 6 9810 48.69 887 865 183.7
A 12 194 8478 41.44 887 865 183.7
A 0 226 8469 41.39 887 865 183.7
B 15 204 271047 1547.78 905 880 174.6
B 11 51 36364 203.29 905 880 174.6
B 5 250 20698 113.54 905 880 174.6
C 9 247 49665 238.21 878 881 204.8
C 1 16 16396 75.76 878 881 204.8
C 13 61 7124 30.48 878 881 204.8
D 2 152 281148 1316.35 860 832 213.0
D 2 33 149041 695.98 860 832 213.0
D 2 136 94152 438.22 860 832 213.0

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