ASTROSAT CZTI

Data Quality Report

Orbit 15181

Creation date: 2024-06-27T17:04:54.583008
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/AS1T02_068T01_9000002238_15181cztM0_level2.evt modeM0/AS1T02_068T01_9000002238_15181cztM0_level2_quad_clean.evt
Size (bytes)463,838,40092,805,120
Size442.4 MB 88.5 MB
Events in quadrant A3,717,378595,603
Events in quadrant B3,248,904609,075
Events in quadrant C3,527,051591,482
Events in quadrant D3,122,028570,451

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154723
B0137542
C0147002
D0137132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6360641.006289%
B6360630.990566%
C6360510.801887%
D6360520.817610%

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 7569 6370 4 4 0.05% 0.06%
B 7569 6369 5 5 0.07% 0.08%
C 7569 6369 1 1 0.01% 0.02%
D 7569 6370 9 9 0.12% 0.14%

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 15 239 598746 3711.88 799 782 161.1
A 12 189 23801 142.89 799 782 161.1
A 13 248 13656 79.92 799 782 161.1
B 0 189 39305 255.0 803 782 151.1
B 3 64 21464 136.9 803 782 151.1
B 0 190 19043 120.87 803 782 151.1
C 3 233 471163 2585.69 783 787 181.9
C 13 61 5456 25.67 783 787 181.9
C 14 234 2886 11.54 783 787 181.9
D 10 70 61173 321.48 780 759 187.9
D 2 33 28151 145.76 780 759 187.9
D 2 234 23372 120.33 780 759 187.9

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