ASTROSAT CZTI

Data Quality Report

Orbit 20160311_T01_046T01_9000000372_level2

Creation date: 2018-11-02T17:16:55.498225
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/AS1T01_046T01_9000000372cztM0_level2_bc.evt modeM0/AS1T01_046T01_9000000372cztM0_level2_quad_clean.evt
Size (bytes)296,380,800106,038,720
Size282.7 MB 101.1 MB
Events in quadrant A1,745,018634,804
Events in quadrant B1,791,721656,817
Events in quadrant C2,069,843634,210
Events in quadrant D2,704,682617,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195600
B0197130
C0208840
D0234060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9632310.321844%
B9632600.622924%
C96312292.377739%
D96322502.595515%

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 11483 9633 0 0 0.00% 0.00%
B 11483 9633 0 0 0.00% 0.00%
C 11483 9634 11 11 0.10% 0.11%
D 11483 9633 5 5 0.04% 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 14 63 15724 153.03 444 432 99.9
A 8 15 11871 114.47 444 432 99.9
A 3 254 9088 86.62 444 432 99.9
B 4 200 26301 305.78 452 437 84.6
B 10 244 7669 85.5 452 437 84.6
B 0 87 6510 71.8 452 437 84.6
C 2 53 288057 2968.0 435 427 96.9
C 10 65 37234 379.8 435 427 96.9
C 8 112 14286 143.01 435 427 96.9
D 2 184 795491 7898.92 431 415 100.7
D 7 67 162841 1613.67 431 415 100.7
D 9 64 24313 237.42 431 415 100.7

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