ASTROSAT CZTI

Data Quality Report

Orbit 41243

Creation date: 2024-06-27T22:26:25.328213
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/AS1A12_044T17_9000005636_41243cztM0_level2.fits modeM0/AS1A12_044T17_9000005636_41243cztM0_level2_quad_clean.evt
Size (bytes)55,739,52015,168,960
Size53.2 MB 14.5 MB
Events in quadrant A552,630102,023
Events in quadrant B383,260106,203
Events in quadrant C664,86694,680
Events in quadrant D396,68893,341

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022112
B016271
C025091
D017011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80480.995025%
B80410.124378%
C804485.970149%
D80420.248756%

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 804 804 3 3 0.37% 0.37%
B 804 804 0 0 0.00% 0.00%
C 804 804 46 46 5.72% 5.72%
D 804 804 3 3 0.37% 0.37%

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 10 83 141863 6506.66 97 95 21.8
A 0 8 18821 859.46 97 95 21.8
A 7 3 8024 363.91 97 95 21.8
B 5 255 3895 188.72 96 94 20.1
B 12 111 2290 109.03 96 94 20.1
B 11 111 2217 105.4 96 94 20.1
C 0 10 148845 6668.03 90 90 22.3
C 9 54 103160 4620.17 90 90 22.3
C 15 214 38657 1728.79 90 90 22.3
D 2 249 28960 1191.64 93 90 24.2
D 3 238 4263 172.24 93 90 24.2
D 12 16 2777 110.91 93 90 24.2

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