ASTROSAT CZTI

Data Quality Report

Orbit 20160701_G05_191T01_9000000524_level2

Creation date: 2025-11-03T15:23:43.394302
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_191T01_9000000524cztM0_level2.fits modeM0/AS1G05_191T01_9000000524cztM0_level2_quad_clean.evt
Size (bytes)538,816,320618,995,520
Size513.9 MB 590.3 MB
Events in quadrant A3,222,2503,850,321
Events in quadrant B3,118,2343,846,187
Events in quadrant C3,184,9383,642,361
Events in quadrant D2,774,3803,391,871

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01276400
B01286880
C01315600
D01256940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011860
B011860
C011860
D011860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5857912112.067294%
B5858014482.471833%
C5858013572.316490%
D5858010181.737794%

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 65379 58570 0 0 0.00% 0.00%
B 65379 58568 0 0 0.00% 0.00%
C 65379 58542 0 0 0.00% 0.00%
D 65379 58564 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 3142 10.88 833 776 217.4
A 14 188 3126 10.81 833 776 217.4
A 7 110 2782 9.23 833 776 217.4
B 2 9 2669 11.23 821 777 168.5
B 12 226 2320 9.16 821 777 168.5
B 14 254 2103 7.87 821 777 168.5
C 1 81 2477 7.5 840 778 226.7
C 1 80 2427 7.27 840 778 226.7
C 1 65 2262 6.55 840 778 226.7
D 11 82 2481 8.18 789 714 216.1
D 3 14 2133 6.57 789 714 216.1
D 4 160 2102 6.42 789 714 216.1

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