ASTROSAT CZTI

Data Quality Report

Orbit 03849

Creation date: 2024-06-27T14:34:20.731837
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/AS1G05_189T01_9000000492_03849cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03849cztM0_level2_quad_clean.evt
Size (bytes)441,322,56074,321,280
Size420.9 MB 70.9 MB
Events in quadrant A3,006,326467,165
Events in quadrant B3,043,578471,018
Events in quadrant C3,819,318447,373
Events in quadrant D3,084,101441,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126972
B0127861
C0154861
D0134511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6071530.873003%
B6071671.103607%
C6071711.169494%
D6071971.597760%

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 7341 6071 0 0 0.00% 0.00%
B 7341 6071 9 9 0.12% 0.15%
C 7341 6071 2 2 0.03% 0.03%
D 7341 6072 59 59 0.80% 0.97%

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 0 199 92303 610.06 743 730 150.1
A 15 234 26597 172.33 743 730 150.1
A 8 15 22436 144.61 743 730 150.1
B 15 204 76782 527.46 750 734 144.2
B 10 249 28235 190.74 750 734 144.2
B 4 81 22426 150.45 750 734 144.2
C 2 53 1033764 6304.76 705 710 163.9
C 14 67 14087 81.64 705 710 163.9
C 10 65 12774 73.63 705 710 163.9
D 8 112 215804 1274.21 705 685 168.8
D 2 32 44808 261.35 705 685 168.8
D 13 223 39287 228.65 705 685 168.8

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
Veto Counter