ASTROSAT CZTI

Data Quality Report

Orbit 20190910_A06_009T05_9000003154_level2

Creation date: 2019-09-12T14:41:57.381550
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A06_009T05_9000003154cztM0_level2_bc.evt modeM0/AS1A06_009T05_9000003154cztM0_level2_quad_clean.evt
Size (bytes)1,185,782,400390,277,440
Size1.1 GB 372.2 MB
Events in quadrant A6,939,1322,483,853
Events in quadrant B7,076,6362,496,306
Events in quadrant C7,948,9932,397,496
Events in quadrant D11,843,8952,325,600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06260
B06260
C06260
D06260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0645770
B0661400
C0703720
D0804320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A308142150.697735%
B308143431.113130%
C308148122.635166%
D308145821.888752%

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 34109 30815 3 3 0.01% 0.01%
B 34109 30813 8 8 0.02% 0.03%
C 34109 30814 12 12 0.04% 0.04%
D 34109 30814 128 128 0.38% 0.42%

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 5 168 518174 1451.62 1612 1584 355.9
A 15 174 82273 226.74 1612 1584 355.9
A 5 16 79635 219.32 1612 1584 355.9
B 0 230 171200 540.87 1619 1578 313.6
B 3 64 155502 490.81 1619 1578 313.6
B 0 190 140263 442.22 1619 1578 313.6
C 3 233 2000538 5516.98 1527 1519 362.3
C 14 128 61744 166.21 1527 1519 362.3
C 10 91 14896 36.92 1527 1519 362.3
D 1 52 2803755 7528.68 1565 1508 372.2
D 12 235 1492870 4006.78 1565 1508 372.2
D 7 38 365389 977.62 1565 1508 372.2

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