ASTROSAT CZTI

Data Quality Report

Orbit 20210519_A10_053T47_9000004386_level2

Creation date: 2021-05-20T10:24:51.113002
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/AS1A10_053T47_9000004386cztM0_level2_bc.evt modeM0/AS1A10_053T47_9000004386cztM0_level2_quad_clean.evt
Size (bytes)650,318,400189,869,760
Size620.2 MB 181.1 MB
Events in quadrant A3,159,9901,234,319
Events in quadrant B7,331,5681,220,594
Events in quadrant C3,258,6291,164,873
Events in quadrant D4,979,5701,157,407

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02880
C02880
D02880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297200
B0436780
C0305290
D0347530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A140982611.851326%
B140984633.284154%
C140983982.823095%
D140982741.943538%

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 16988 14098 0 0 0.00% 0.00%
B 16988 14098 3 3 0.02% 0.02%
C 16988 14098 2 2 0.01% 0.01%
D 16988 14098 45 45 0.26% 0.32%

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 8 192 37838 216.13 800 786 171.4
A 12 96 25901 146.5 800 786 171.4
A 13 254 25488 144.09 800 786 171.4
B 6 159 3921442 25890.74 795 780 151.4
B 0 229 293613 1933.77 795 780 151.4
B 0 230 19832 125.81 795 780 151.4
C 10 22 163388 921.72 749 746 176.5
C 0 10 124021 698.62 749 746 176.5
C 3 233 59408 332.45 749 746 176.5
D 12 227 947496 5302.37 778 752 178.6
D 8 195 735652 4115.91 778 752 178.6
D 2 250 88089 489.14 778 752 178.6

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