ASTROSAT CZTI

Data Quality Report

Orbit 34571

Creation date: 2022-02-19T00:21:12.575377
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/AS1A05_167T01_9000004940_34571cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34571cztM0_level2_quad_clean.evt
Size (bytes)523,635,84071,519,040
Size499.4 MB 68.2 MB
Events in quadrant A2,711,600451,426
Events in quadrant B4,634,022434,346
Events in quadrant C2,917,069455,705
Events in quadrant D5,208,729424,617

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118013
B0174782
C0119002
D0197122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A571270.122549%
B571257310.031513%
C5712160.280112%
D57121302.275910%

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 7174 5713 0 0 0.00% 0.00%
B 7174 5713 386 386 5.38% 6.76%
C 7174 5713 5 5 0.07% 0.09%
D 7174 5713 93 93 1.30% 1.63%

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 44581 319.18 675 662 137.6
A 15 169 32762 233.29 675 662 137.6
A 9 143 14560 101.0 675 662 137.6
B 5 172 1677763 13603.6 644 629 123.3
B 5 255 226960 1835.82 644 629 123.3
B 0 190 60290 483.92 644 629 123.3
C 15 214 241073 1560.0 659 665 154.1
C 0 10 54046 346.39 659 665 154.1
C 14 67 39298 250.69 659 665 154.1
D 8 195 1646692 10218.33 653 634 161.1
D 2 250 401714 2489.81 653 634 161.1
D 7 223 149653 925.07 653 634 161.1

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