ASTROSAT CZTI

Data Quality Report

Orbit 20171015_G08_071T02_9000001620_level2

Creation date: 2017-11-09T11:35:12.373167
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_071T02_9000001620cztM0_level2_bc.evt modeM0/AS1G08_071T02_9000001620cztM0_level2_quad_clean.evt
Size (bytes)12,684,925,4403,196,166,400
Size11.8 GB 3.0 GB
Events in quadrant A94,815,32819,546,968
Events in quadrant B84,803,82719,894,765
Events in quadrant C54,642,56819,979,749
Events in quadrant D131,044,33718,383,349

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04200
B04200
C04200
D04200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056500
B056500
C056500
D056500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07176940
B06884380
C05711420
D08317580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A277368132414.773802%
B277368124964.505206%
C27736827961.008047%
D277368246038.870165%

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 319675 277374 1586 1586 0.50% 0.57%
B 319675 277367 478 478 0.15% 0.17%
C 319675 277379 41 41 0.01% 0.01%
D 319675 277337 7677 7677 2.40% 2.77%

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 5 32034398 10880.92 13726 13469 2942.9
A 8 15 6620565 2245.13 13726 13469 2942.9
A 14 238 1189260 399.54 13726 13469 2942.9
B 4 239 16670519 6272.99 13996 13582 2655.3
B 10 16 7345077 2761.04 13996 13582 2655.3
B 15 204 2198581 822.87 13996 13582 2655.3
C 9 54 459428 148.48 13736 13543 3003.1
C 14 234 142819 43.05 13736 13543 3003.1
C 9 204 115047 33.8 13736 13543 3003.1
D 10 253 29909552 9834.54 13148 12671 3040.0
D 1 52 22634213 7441.32 13148 12671 3040.0
D 8 195 4500469 1476.25 13148 12671 3040.0

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