ASTROSAT CZTI

Data Quality Report

Orbit 20190124_C04_009T03_9000002674_level2

Creation date: 2019-01-26T17:09:16.184429
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/AS1C04_009T03_9000002674cztM0_level2_bc.evt modeM0/AS1C04_009T03_9000002674cztM0_level2_quad_clean.evt
Size (bytes)254,211,840148,815,360
Size242.4 MB 141.9 MB
Events in quadrant A1,622,3991,014,314
Events in quadrant B1,747,5011,030,506
Events in quadrant C1,560,087988,927
Events in quadrant D2,263,451965,449

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152240
B0158910
C0152120
D0177660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7308801.094691%
B73081141.559934%
C73081121.532567%
D73083344.570334%

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 8648 7308 1 1 0.01% 0.01%
B 8648 7308 2 2 0.02% 0.03%
C 8648 7308 2 2 0.02% 0.03%
D 8648 7308 59 59 0.68% 0.81%

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 15 174 48017 527.71 406 399 90.2
A 14 237 18182 197.07 406 399 90.2
A 0 226 2669 25.16 406 399 90.2
B 7 220 75492 948.79 410 402 79.1
B 0 197 28594 356.22 410 402 79.1
B 0 219 14169 173.95 410 402 79.1
C 3 233 23201 241.21 393 391 94.6
C 9 160 9336 94.59 393 391 94.6
C 9 176 6599 65.65 393 391 94.6
D 7 238 494220 4741.41 394 384 104.2
D 10 70 71371 681.56 394 384 104.2
D 5 222 65456 624.77 394 384 104.2

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