ASTROSAT CZTI

Data Quality Report

Orbit 20210829_A10_109T01_9000004678_level2

Creation date: 2025-12-28T10:42:24.802301
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_109T01_9000004678cztM0_level2.fits modeM0/AS1A10_109T01_9000004678cztM0_level2_quad_clean.evt
Size (bytes)4,699,650,2404,120,099,200
Size4.4 GB 3.8 GB
Events in quadrant A30,237,08025,862,488
Events in quadrant B26,692,28222,271,427
Events in quadrant C28,100,62823,275,116
Events in quadrant D24,944,77321,053,043

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07250
B07250
C07250
D07260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096020
B096000
C096020
D096040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09894710
B017796510
C011830300
D014549310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47194451881.099283%
B4716826220013.186850%
C471898281785.971206%
D471900308336.533800%

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 560554 472141 0 0 0.00% 0.00%
B 560553 471635 0 0 0.00% 0.00%
C 560554 471796 0 0 0.00% 0.00%
D 560554 471877 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 29237 11.35 7883 7441 1919.8
A 7 110 23958 8.6 7883 7441 1919.8
A 0 30 23188 8.2 7883 7441 1919.8
B 2 9 21308 10.69 7073 6786 1358.9
B 2 8 17922 8.19 7073 6786 1358.9
B 3 80 17746 8.06 7073 6786 1358.9
C 3 187 19383 6.67 7456 7015 1854.8
C 12 241 19298 6.62 7456 7015 1854.8
C 3 126 18862 6.39 7456 7015 1854.8
D 4 246 19546 6.94 7115 6493 1880.4
D 10 189 17981 6.11 7115 6493 1880.4
D 3 14 17491 5.85 7115 6493 1880.4

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