ASTROSAT CZTI

Data Quality Report

Orbit 31586

Creation date: 2024-06-27T20:30:20.744195
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/AS1C06_006T06_9000004608_31586cztM0_level2.evt modeM0/AS1C06_006T06_9000004608_31586cztM0_level2_quad_clean.evt
Size (bytes)605,485,44061,914,240
Size577.4 MB 59.0 MB
Events in quadrant A3,025,624377,667
Events in quadrant B5,749,160372,432
Events in quadrant C3,162,960363,607
Events in quadrant D5,993,688341,072

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124451
B0210911
C0128471
D0222351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6008530.882157%
B60094026.689965%
C6009921.531037%
D60094487.455483%

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 7238 6008 0 0 0.00% 0.00%
B 7239 6009 110 110 1.52% 1.83%
C 7239 6009 1 1 0.01% 0.02%
D 7239 6010 405 405 5.59% 6.74%

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 10879 64.66 784 771 156.3
A 3 137 7492 42.99 784 771 156.3
A 0 226 6679 37.79 784 771 156.3
B 6 159 1698950 11916.17 759 742 142.5
B 12 1 498276 3491.15 759 742 142.5
B 4 80 377768 2645.56 759 742 142.5
C 14 238 121898 697.12 747 751 173.8
C 4 175 48994 277.61 747 751 173.8
C 3 233 39194 221.21 747 751 173.8
D 8 195 1772794 10438.12 722 705 169.8
D 7 223 477946 2811.09 722 705 169.8
D 12 218 403110 2370.28 722 705 169.8

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