ASTROSAT CZTI

Data Quality Report

Orbit 20170203_A02_178T01_9000001006_level2

Creation date: 2017-09-23T01:20:05.983315
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/AS1A02_178T01_9000001006cztM0_level2.evt modeM0/AS1A02_178T01_9000001006cztM0_level2_quad_clean.evt
Size (bytes)7,480,319,0401,109,655,360
Size7.0 GB 1.0 GB
Events in quadrant A77,456,6606,286,554
Events in quadrant B43,650,5237,328,827
Events in quadrant C50,853,9897,112,499
Events in quadrant D48,603,5086,796,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018040
B018040
C018040
D018040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01370
B01370
C01370
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02909660
B01894530
C02125240
D02079850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A886981669818.825678%
B8869811611.308936%
C8869842824.827617%
D8869822112.492728%

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 102602 88702 12542 12542 12.22% 14.14%
B 102602 88706 46 46 0.04% 0.05%
C 102602 88707 3066 3066 2.99% 3.46%
D 102602 88706 1050 1050 1.02% 1.18%

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 15 234 39846483 21392.32 9284 9095 1862.2
A 8 15 813783 432.11 9284 9095 1862.2
A 14 111 583050 308.21 9284 9095 1862.2
B 0 214 1008341 508.52 10542 10290 1962.6
B 11 51 792514 398.56 10542 10290 1962.6
B 4 81 430343 214.02 10542 10290 1962.6
C 9 68 11272509 4854.06 10054 10098 2320.2
C 1 16 260272 107.82 10054 10098 2320.2
C 13 61 78314 29.4 10054 10098 2320.2
D 2 216 5804848 2365.26 10099 9792 2450.1
D 12 221 1411150 571.97 10099 9792 2450.1
D 14 34 1391501 563.95 10099 9792 2450.1

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