ASTROSAT CZTI

Data Quality Report

Orbit 13002

Creation date: 2024-06-27T16:34:57.551992
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_055T01_9000001912_13002cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_13002cztM0_level2_quad_clean.evt
Size (bytes)610,741,44089,870,400
Size582.4 MB 85.7 MB
Events in quadrant A3,854,522567,550
Events in quadrant B6,309,087508,586
Events in quadrant C3,549,028570,551
Events in quadrant D4,260,737538,255

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164063
B0236722
C0159592
D0179252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77151111.438756%
B7715129616.798445%
C7715500.648088%
D77152252.916397%

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 8056 7718 6 6 0.07% 0.08%
B 8055 7717 736 736 9.14% 9.54%
C 8056 7718 4 4 0.05% 0.05%
D 8056 7718 150 150 1.86% 1.94%

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 12 189 182233 963.21 919 897 188.3
A 9 143 59486 311.21 919 897 188.3
A 1 162 38550 200.0 919 897 188.3
B 4 239 2511865 15932.67 834 813 157.6
B 3 64 228408 1444.09 834 813 157.6
B 0 219 77919 489.24 834 813 157.6
C 14 234 32606 153.44 899 900 206.6
C 13 61 6594 27.55 899 900 206.6
C 8 128 4517 17.5 899 900 206.6
D 1 52 838641 3922.13 890 864 213.6
D 8 195 48174 221.49 890 864 213.6
D 2 234 32778 149.41 890 864 213.6

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