ASTROSAT CZTI

Data Quality Report

Orbit 20160502_G05_221T01_9000000438_level2

Creation date: 2016-09-06T17:50:47.324066
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/AS1G05_221T01_9000000438cztM0_level2_bc.evt modeM0/AS1G05_221T01_9000000438cztM0_level2_quad_clean.evt
Size (bytes)1,940,135,040583,997,760
Size1.8 GB 556.9 MB
Events in quadrant A16,028,4683,525,907
Events in quadrant B14,706,1273,570,231
Events in quadrant C12,918,6793,583,802
Events in quadrant D11,568,2873,451,270

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01297660
B01193580
C01162410
D01115210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010500
B010500
C010500
D010500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5184432666.299668%
B5184412642.438083%
C5184417243.325361%
D518448821.701258%

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 58363 51837 133 133 0.23% 0.26%
B 58363 51837 29 29 0.05% 0.06%
C 58363 51837 149 149 0.26% 0.29%
D 58363 51838 27 27 0.05% 0.05%

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 0 199 2624225 4666.35 2489 2441 561.8
A 0 50 1887755 3355.56 2489 2441 561.8
A 0 118 1380238 2452.26 2489 2441 561.8
B 15 204 3347787 6653.21 2589 2521 502.8
B 2 249 369547 729.96 2589 2521 502.8
B 3 0 282902 557.63 2589 2521 502.8
C 14 223 2324678 4120.99 2506 2487 563.5
C 6 80 377109 664.81 2506 2487 563.5
C 1 192 199382 349.41 2506 2487 563.5
D 13 223 591395 994.73 2508 2422 592.1
D 13 120 411894 691.56 2508 2422 592.1
D 13 239 162617 270.56 2508 2422 592.1

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