ASTROSAT CZTI

Data Quality Report

Orbit 04996

Creation date: 2024-06-27T14:49:53.176810
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_115T01_9000000634_04996cztM0_level2.evt modeM0/AS1G05_115T01_9000000634_04996cztM0_level2_quad_clean.evt
Size (bytes)479,148,48074,520,000
Size457.0 MB 71.1 MB
Events in quadrant A3,127,450450,629
Events in quadrant B3,572,795447,789
Events in quadrant C3,027,041448,476
Events in quadrant D4,318,100431,995

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140722
B0151331
C0139741
D0175221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6858590.860309%
B6858971.414407%
C6858300.437445%
D68582303.353747%

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 7643 6859 0 0 0.00% 0.00%
B 7643 6859 12 12 0.16% 0.17%
C 7643 6859 0 0 0.00% 0.00%
D 7643 6859 158 158 2.07% 2.30%

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 13 251 39177 236.66 796 776 162.3
A 0 50 13244 76.84 796 776 162.3
A 0 226 8007 44.56 796 776 162.3
B 4 80 129139 847.49 800 780 151.5
B 15 204 114552 751.17 800 780 151.5
B 0 219 99697 653.1 800 780 151.5
C 13 61 6489 32.03 774 776 178.4
C 12 4 4397 20.3 774 776 178.4
C 3 202 1968 6.68 774 776 178.4
D 4 95 393359 2064.44 772 746 190.2
D 2 136 314916 1651.97 772 746 190.2
D 12 227 143071 748.37 772 746 190.2

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