ASTROSAT CZTI

Data Quality Report

Orbit 20171207_A04_049T01_9000001754_level2

Creation date: 2018-01-05T15:05:16.743625
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/AS1A04_049T01_9000001754cztM0_level2_bc.evt modeM0/AS1A04_049T01_9000001754cztM0_level2_quad_clean.evt
Size (bytes)942,854,400338,408,640
Size899.2 MB 322.7 MB
Events in quadrant A5,529,6602,142,587
Events in quadrant B8,087,1652,137,437
Events in quadrant C5,084,8642,160,305
Events in quadrant D8,085,9192,031,829

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05280
B05280
C05280
D05280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0552400
B0646100
C0528760
D0628390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A258383421.323632%
B2583811764.551436%
C258381710.661816%
D258389333.610961%

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 31154 25839 0 0 0.00% 0.00%
B 31154 25839 6 6 0.02% 0.02%
C 31154 25839 4 4 0.01% 0.02%
D 31154 25840 49 49 0.16% 0.19%

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 1 162 214574 760.23 1292 1268 280.6
A 8 15 203758 721.68 1292 1268 280.6
A 3 1 30926 105.7 1292 1268 280.6
B 4 239 1577698 6468.42 1298 1266 243.7
B 3 64 536795 2197.38 1298 1266 243.7
B 15 185 273145 1115.57 1298 1266 243.7
C 0 207 23131 76.32 1288 1273 286.4
C 13 61 8032 23.6 1288 1273 286.4
C 8 128 6418 17.96 1288 1273 286.4
D 8 195 980003 3338.54 1259 1214 293.2
D 1 52 812891 2768.54 1259 1214 293.2
D 13 122 606598 2064.9 1259 1214 293.2

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