ASTROSAT CZTI

Data Quality Report

Orbit 20160518_G05_209T01_9000000458_level2

Creation date: 2025-10-29T17:16:31.617655
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_209T01_9000000458cztM0_level2.fits modeM0/AS1G05_209T01_9000000458cztM0_level2_quad_clean.evt
Size (bytes)447,168,960626,215,680
Size426.5 MB 597.2 MB
Events in quadrant A2,606,8143,972,677
Events in quadrant B2,548,2723,981,664
Events in quadrant C2,609,6723,863,026
Events in quadrant D2,253,5383,626,738

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010440
B010440
C010440
D010440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01139160
B01181620
C01163960
D01078020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5135612112.358050%
B513577381.437000%
C5135712732.478727%
D513574210.819752%

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 57227 51343 0 0 0.00% 0.00%
B 57227 51356 0 0 0.00% 0.00%
C 57227 51351 0 0 0.00% 0.00%
D 57227 51354 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 2643 11.17 680 635 179.7
A 7 110 2257 9.03 680 635 179.7
A 0 30 2021 7.71 680 635 179.7
B 2 9 2184 11.44 674 642 134.7
B 12 226 1839 8.88 674 642 134.7
B 14 254 1802 8.61 674 642 134.7
C 1 81 1916 7.03 690 642 181.3
C 1 80 1905 6.96 690 642 181.3
C 12 241 1837 6.59 690 642 181.3
D 6 231 1695 6.39 645 585 173.8
D 7 5 1677 6.28 645 585 173.8
D 6 44 1625 5.98 645 585 173.8

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