ASTROSAT CZTI

Data Quality Report

Orbit 26462

Creation date: 2024-06-27T19:29:20.597363
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/AS1A09_104T02_9000003826_26462cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26462cztM0_level2_quad_clean.evt
Size (bytes)563,489,28092,712,960
Size537.4 MB 88.4 MB
Events in quadrant A3,188,666613,638
Events in quadrant B3,288,917629,328
Events in quadrant C3,773,167593,935
Events in quadrant D6,379,125522,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135390
B0136890
C0152720
D0232410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6425380.591440%
B6425450.700389%
C64251492.319066%
D642591914.303502%

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 7530 6427 0 0 0.00% 0.00%
B 7530 6427 0 0 0.00% 0.00%
C 7530 6427 55 55 0.73% 0.86%
D 7530 6426 807 807 10.72% 12.56%

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 10129 56.13 825 811 166.0
A 6 16 8649 47.22 825 811 166.0
A 3 137 7560 40.66 825 811 166.0
B 0 190 36416 227.37 825 805 156.6
B 12 111 18581 113.5 825 805 156.6
B 11 111 16796 102.1 825 805 156.6
C 3 233 303801 1631.8 790 798 185.7
C 2 16 233047 1250.76 790 798 185.7
C 14 238 127109 680.24 790 798 185.7
D 1 52 1866282 10463.67 747 730 178.3
D 12 233 1259446 7059.99 747 730 178.3
D 7 80 353931 1981.06 747 730 178.3

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