ASTROSAT CZTI

Data Quality Report

Orbit 34276

Creation date: 2022-01-30T01:23:53.286857
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/AS1T04_086T01_9000004890_34276cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34276cztM0_level2_quad_clean.evt
Size (bytes)425,704,32071,190,720
Size406.0 MB 67.9 MB
Events in quadrant A2,496,235454,699
Events in quadrant B3,129,657458,400
Events in quadrant C2,838,878462,859
Events in quadrant D4,080,021420,776

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105543
B0123962
C0113212
D0155172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5121130.253857%
B51211673.261082%
C5121200.390549%
D51212725.311463%

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 7095 5122 2 2 0.03% 0.04%
B 7095 5122 125 125 1.76% 2.44%
C 7095 5122 11 11 0.16% 0.21%
D 7095 5122 274 274 3.86% 5.35%

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 10 83 27101 210.99 630 619 125.5
A 9 143 24203 187.9 630 619 125.5
A 13 6 9438 70.26 630 619 125.5
B 5 172 408854 3513.23 626 611 116.2
B 15 201 84782 724.35 626 611 116.2
B 0 182 55706 474.13 626 611 116.2
C 15 214 221381 1532.1 630 637 144.1
C 0 10 57715 396.16 630 637 144.1
C 14 254 43521 297.64 630 637 144.1
D 7 223 677630 4594.48 612 599 147.4
D 8 195 574348 3893.58 612 599 147.4
D 2 250 120943 816.68 612 599 147.4

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