ASTROSAT CZTI

Data Quality Report

Orbit 20171014_A04_053T03_9000001612_level2

Creation date: 2025-11-17T18:46:14.125842
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/AS1A04_053T03_9000001612cztM0_level2.fits modeM0/AS1A04_053T03_9000001612cztM0_level2_quad_clean.evt
Size (bytes)75,720,96064,039,680
Size72.2 MB 61.1 MB
Events in quadrant A452,956361,081
Events in quadrant B434,020344,022
Events in quadrant C446,806344,268
Events in quadrant D388,984318,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173880
B0195150
C0167990
D0192200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8211680.828157%
B82113133.811960%
C8211250.304470%
D82111682.046036%

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 9156 8211 0 0 0.00% 0.00%
B 9156 8211 0 0 0.00% 0.00%
C 9156 8211 0 0 0.00% 0.00%
D 9156 8211 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 14 188 451 10.95 117 109 31.2
A 0 29 425 10.11 117 109 31.2
A 14 204 393 9.09 117 109 31.2
B 2 9 374 10.54 114 108 25.2
B 2 8 293 7.33 114 108 25.2
B 3 17 285 7.02 114 108 25.2
C 3 158 310 6.16 118 110 32.5
C 9 242 304 5.97 118 110 32.5
C 2 191 299 5.82 118 110 32.5
D 3 31 327 7.21 110 101 31.4
D 3 14 323 7.08 110 101 31.4
D 3 30 293 6.12 110 101 31.4

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