ASTROSAT CZTI

Data Quality Report

Orbit 31017

Creation date: 2024-06-27T20:22:19.344985
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_071T52_9000004480_31017cztM0_level2.evt modeM0/AS1A10_071T52_9000004480_31017cztM0_level2_quad_clean.evt
Size (bytes)522,990,72094,705,920
Size498.8 MB 90.3 MB
Events in quadrant A3,107,829630,571
Events in quadrant B5,019,392622,420
Events in quadrant C3,236,762594,817
Events in quadrant D4,052,136584,729

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132821
B0192541
C0135671
D0162541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243600.961076%
B62441201.921845%
C62441342.146060%
D6244801.281230%

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 7363 6243 3 3 0.04% 0.05%
B 7364 6244 9 9 0.12% 0.14%
C 7364 6244 27 27 0.37% 0.43%
D 7364 6244 34 34 0.46% 0.54%

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 5 168 15183 90.36 801 786 159.3
A 13 254 12185 71.55 801 786 159.3
A 3 137 7724 43.55 801 786 159.3
B 6 159 1764151 11627.03 790 770 151.7
B 0 190 54079 351.5 790 770 151.7
B 0 183 25107 160.47 790 770 151.7
C 14 238 122939 681.89 762 768 179.2
C 0 10 89231 493.75 762 768 179.2
C 3 233 20471 109.97 762 768 179.2
D 8 195 773140 4157.17 776 756 185.8
D 13 174 158947 851.43 776 756 185.8
D 2 250 88431 471.89 776 756 185.8

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