ASTROSAT CZTI

Data Quality Report

Orbit 17780

Creation date: 2024-06-27T17:40:48.781111
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_015T01_9000002650_17780cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17780cztM0_level2_quad_clean.evt
Size (bytes)532,869,12082,071,360
Size508.2 MB 78.3 MB
Events in quadrant A3,259,069508,610
Events in quadrant B3,438,838516,893
Events in quadrant C3,482,622493,159
Events in quadrant D5,474,948471,672

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145341
B0148061
C0149591
D0212641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71021472.069839%
B71021732.435934%
C71021982.787947%
D710284111.841735%

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 7327 7102 0 0 0.00% 0.00%
B 7327 7102 3 3 0.04% 0.04%
C 7327 7102 21 21 0.29% 0.30%
D 7327 7103 575 575 7.85% 8.10%

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 8135 42.27 845 823 173.0
A 0 226 7388 37.95 845 823 173.0
A 3 137 6407 32.28 845 823 173.0
B 7 220 50276 302.86 841 817 163.3
B 0 219 25561 151.52 841 817 163.3
B 0 230 23405 138.32 841 817 163.3
C 4 254 151732 797.31 804 806 189.3
C 14 238 123080 645.95 804 806 189.3
C 5 218 43893 227.62 804 806 189.3
D 7 238 2365155 12525.23 787 767 188.8
D 10 70 72120 377.99 787 767 188.8
D 2 234 41307 214.76 787 767 188.8

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