ASTROSAT CZTI

Data Quality Report

Orbit 20180611_G08_026T01_9000002154_level2

Creation date: 2018-06-14T12:04:18.893499
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/AS1G08_026T01_9000002154cztM0_level2_bc.evt modeM0/AS1G08_026T01_9000002154cztM0_level2_quad_clean.evt
Size (bytes)2,154,078,720627,373,440
Size2.0 GB 598.3 MB
Events in quadrant A11,799,5183,948,891
Events in quadrant B11,893,9933,934,156
Events in quadrant C24,030,4103,799,545
Events in quadrant D14,011,2093,790,614

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010460
B010460
C010460
D010460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01127170
B01122810
C01610250
D01215720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514276301.225037%
B514278921.734497%
C514277571.471989%
D5142718113.521496%

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 57613 51423 4 4 0.01% 0.01%
B 57613 51422 17 17 0.03% 0.03%
C 57613 51423 0 0 0.00% 0.00%
D 57613 51422 202 202 0.35% 0.39%

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 0 23 612722 1053.08 2650 2589 579.4
A 1 162 489581 840.54 2650 2589 579.4
A 8 15 193324 329.21 2650 2589 579.4
B 0 189 512077 1013.04 2646 2572 502.9
B 10 16 392637 775.56 2646 2572 502.9
B 0 229 230543 453.27 2646 2572 502.9
C 3 233 13962610 25173.36 2543 2507 554.6
C 3 234 74368 129.58 2543 2507 554.6
C 3 232 31338 51.99 2543 2507 554.6
D 10 199 2198509 3687.59 2580 2502 595.5
D 12 110 972722 1629.22 2580 2502 595.5
D 13 122 341280 568.88 2580 2502 595.5

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