ASTROSAT CZTI

Data Quality Report

Orbit 21164

Creation date: 2024-06-27T18:24:21.878836
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/AS1C04_001T01_9000003126_21164cztM0_level2.evt modeM0/AS1C04_001T01_9000003126_21164cztM0_level2_quad_clean.evt
Size (bytes)544,020,480133,695,360
Size518.8 MB 127.5 MB
Events in quadrant A4,192,350889,299
Events in quadrant B3,415,101925,419
Events in quadrant C3,341,331897,694
Events in quadrant D5,056,620853,808

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172662
B0147922
C0145262
D0199712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69372854.108404%
B6938510.735082%
C6938971.398097%
D69382673.848371%

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 9212 6939 147 147 1.60% 2.12%
B 9213 6940 2 2 0.02% 0.03%
C 9213 6939 7 7 0.08% 0.10%
D 9213 6940 196 196 2.13% 2.82%

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 5 16 1081185 6734.07 801 785 160.4
A 15 192 13521 79.38 801 785 160.4
A 13 254 10719 61.92 801 785 160.4
B 0 190 38627 247.81 820 801 152.6
B 0 189 34420 220.25 820 801 152.6
B 0 229 26441 167.97 820 801 152.6
C 14 238 126566 683.77 791 793 183.9
C 3 233 103192 556.69 791 793 183.9
C 0 10 27990 147.86 791 793 183.9
D 1 239 609124 3242.27 784 761 187.6
D 1 20 496663 2642.91 784 761 187.6
D 1 52 295899 1572.94 784 761 187.6

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