ASTROSAT CZTI

Data Quality Report

Orbit 14224

Creation date: 2024-06-27T16:52:08.527714
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/AS1G08_084T01_9000002100_14224cztM0_level2.evt modeM0/AS1G08_084T01_9000002100_14224cztM0_level2_quad_clean.evt
Size (bytes)499,559,040116,481,600
Size476.4 MB 111.1 MB
Events in quadrant A3,389,249771,050
Events in quadrant B3,786,051784,359
Events in quadrant C3,686,388756,540
Events in quadrant D3,800,367736,459

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143673
B0155292
C0149152
D0156312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6889270.391929%
B68891321.916098%
C6889580.841922%
D6889650.943533%

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 8955 6892 1 1 0.01% 0.01%
B 8955 6892 49 49 0.55% 0.71%
C 8955 6892 0 0 0.00% 0.00%
D 8955 6892 14 14 0.16% 0.20%

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 8 15 66443 383.4 847 829 171.1
A 12 189 47310 271.6 847 829 171.1
A 9 143 8309 43.71 847 829 171.1
B 0 182 291348 1835.78 849 828 158.3
B 0 229 60615 377.79 849 828 158.3
B 4 97 42101 260.8 849 828 158.3
C 3 233 432038 2248.44 834 838 191.8
C 13 61 5868 26.23 834 838 191.8
C 14 234 5092 22.18 834 838 191.8
D 10 199 283092 1456.09 823 802 193.9
D 8 195 204780 1052.15 823 802 193.9
D 5 222 124010 635.52 823 802 193.9

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