ASTROSAT CZTI

Data Quality Report

Orbit 20170401_G07_043T01_9000001126_level2

Creation date: 2017-09-23T14:06:28.379609
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/AS1G07_043T01_9000001126cztM0_level2.evt modeM0/AS1G07_043T01_9000001126cztM0_level2_quad_clean.evt
Size (bytes)5,360,676,4801,008,904,320
Size5.0 GB 962.2 MB
Events in quadrant A38,442,3836,237,877
Events in quadrant B40,474,7426,322,211
Events in quadrant C37,690,5686,384,646
Events in quadrant D40,311,6366,100,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01688910
B01736450
C01680360
D01758740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016400
B016400
C016400
D016400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8043010061.250777%
B8043015941.981848%
C804298971.115269%
D8043012951.610096%

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 93375 80441 16 16 0.02% 0.02%
B 93375 80443 415 415 0.44% 0.52%
C 93375 80442 6 6 0.01% 0.01%
D 93375 80442 437 437 0.47% 0.54%

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 79 1202358 617.1 9573 9365 1933.2
A 8 15 285020 142.59 9573 9365 1933.2
A 0 226 94729 44.16 9573 9365 1933.2
B 10 16 683169 376.25 9571 9343 1790.9
B 4 173 651462 358.55 9571 9343 1790.9
B 0 214 601900 330.87 9571 9343 1790.9
C 1 16 1202191 555.74 9353 9391 2146.3
C 13 61 72288 29.3 9353 9391 2146.3
C 12 4 30220 9.7 9353 9391 2146.3
D 13 122 1032967 452.93 9333 9055 2260.6
D 1 52 981960 430.37 9333 9055 2260.6
D 5 233 682423 297.87 9333 9055 2260.6

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