ASTROSAT CZTI

Data Quality Report

Orbit 24536

Creation date: 2024-06-27T19:07:01.972640
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_183T01_9000003606_24536cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24536cztM0_level2_quad_clean.evt
Size (bytes)540,771,840121,417,920
Size515.7 MB 115.8 MB
Events in quadrant A3,145,912845,530
Events in quadrant B4,708,771821,790
Events in quadrant C3,124,743803,018
Events in quadrant D4,965,793762,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134642
B0180182
C0133342
D0192662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6373590.925781%
B63735738.991056%
C6373651.019928%
D63732213.467755%

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 7583 6374 3 3 0.04% 0.05%
B 7583 6374 336 336 4.43% 5.27%
C 7583 6374 1 1 0.01% 0.02%
D 7583 6374 150 150 1.98% 2.35%

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 4 2 29103 175.91 808 793 160.9
A 13 254 10530 60.5 808 793 160.9
A 3 137 7136 39.41 808 793 160.9
B 3 64 1453333 9994.76 781 762 145.3
B 5 172 188687 1293.06 781 762 145.3
B 12 111 17212 113.19 781 762 145.3
C 14 238 124935 709.4 763 772 175.0
C 2 16 15612 84.79 763 772 175.0
C 13 61 5464 26.81 763 772 175.0
D 1 52 1563446 8485.77 758 735 184.2
D 12 218 332207 1799.95 758 735 184.2
D 8 195 174901 945.75 758 735 184.2

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