ASTROSAT CZTI

Data Quality Report

Orbit 36208

Creation date: 2022-06-10T09:33:52.547042
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/AS1A11_080T02_9000005176_36208cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36208cztM0_level2_quad_clean.evt
Size (bytes)764,640,00073,114,560
Size729.2 MB 69.7 MB
Events in quadrant A3,045,439507,541
Events in quadrant B3,766,753499,153
Events in quadrant C12,145,277322,423
Events in quadrant D3,806,489476,548

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127303
B0148882
C0400892
D0151532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5823110.188906%
B58232604.465052%
C5823376964.726086%
D58231823.125537%

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 7166 5824 2 2 0.03% 0.03%
B 7166 5824 217 217 3.03% 3.73%
C 7166 5824 3412 3412 47.61% 58.59%
D 7166 5824 155 155 2.16% 2.66%

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 186482 1374.83 665 652 135.2
A 15 223 149102 1098.28 665 652 135.2
A 2 79 47669 347.85 665 652 135.2
B 5 172 950631 7522.31 649 630 126.3
B 0 190 89708 705.34 649 630 126.3
B 5 255 61568 482.52 649 630 126.3
C 4 254 9739802 96397.67 430 431 101.0
C 15 208 237887 2350.28 430 431 101.0
C 15 214 180229 1779.59 430 431 101.0
D 12 6 726609 4558.78 643 624 159.2
D 2 250 128592 803.57 643 624 159.2
D 2 153 97486 608.24 643 624 159.2

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