ASTROSAT CZTI

Data Quality Report

Orbit 20210424_A10_097T03_9000004336_level2

Creation date: 2025-12-25T00:54:58.586159
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/AS1A10_097T03_9000004336cztM0_level2.fits modeM0/AS1A10_097T03_9000004336cztM0_level2_quad_clean.evt
Size (bytes)1,809,135,3601,466,648,640
Size1.7 GB 1.4 GB
Events in quadrant A11,409,1768,597,167
Events in quadrant B10,717,7628,455,003
Events in quadrant C10,123,3647,212,006
Events in quadrant D9,966,9667,594,957

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03010
B03010
C03010
D03010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037240
B037240
C037240
D037240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03946780
B05604040
C07252940
D04307460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18328134231.867624%
B18328045232.467809%
C1832803973321.678852%
D18328132291.761776%

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 213122 183268 0 0 0.00% 0.00%
B 213122 183268 0 0 0.00% 0.00%
C 213122 183215 0 0 0.00% 0.00%
D 213122 183268 0 0 0.00% 0.00%

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 0 29 9519 9.47 2969 2789 710.4
A 7 110 8947 8.67 2969 2789 710.4
A 9 19 8446 7.96 2969 2789 710.4
B 2 9 8595 10.65 2834 2703 553.3
B 5 128 7237 8.19 2834 2703 553.3
B 3 17 7143 8.02 2834 2703 553.3
C 12 241 6998 6.65 2681 2520 673.2
C 3 126 6869 6.46 2681 2520 673.2
C 3 187 6804 6.36 2681 2520 673.2
D 15 46 7704 6.84 2848 2601 746.0
D 10 189 7131 6.07 2848 2601 746.0
D 3 14 7036 5.94 2848 2601 746.0

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