ASTROSAT CZTI

Data Quality Report

Orbit 20588

Creation date: 2024-06-27T18:17:09.710993
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/AS1A06_003T04_9000003046_20588cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20588cztM0_level2_quad_clean.evt
Size (bytes)582,929,280102,804,480
Size555.9 MB 98.0 MB
Events in quadrant A3,424,181656,560
Events in quadrant B3,751,868669,819
Events in quadrant C4,387,011643,841
Events in quadrant D5,586,999625,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152962
B0162972
C0181732
D0217733

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7433150.201803%
B7433730.982107%
C74334756.390421%
D74324175.610872%

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 7828 7434 0 0 0.00% 0.00%
B 7828 7434 11 11 0.14% 0.15%
C 7828 7434 147 147 1.88% 1.98%
D 7827 7433 294 294 3.76% 3.96%

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 16 18965 101.43 883 860 178.5
A 8 205 9761 49.87 883 860 178.5
A 12 194 9380 47.73 883 860 178.5
B 7 220 62225 360.0 886 865 170.4
B 0 190 59445 343.69 886 865 170.4
B 0 189 57366 331.49 886 865 170.4
C 8 208 927202 4640.14 843 851 199.6
C 14 238 129142 642.62 843 851 199.6
C 5 112 35937 175.75 843 851 199.6
D 7 238 997309 4822.28 849 827 206.6
D 5 222 792327 3830.31 849 827 206.6
D 1 20 379655 1833.26 849 827 206.6

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