ASTROSAT CZTI

Data Quality Report

Orbit 20170608_C02_041T02_9000001282_level2

Creation date: 2017-09-24T03:55:15.425391
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/AS1C02_041T02_9000001282cztM0_level2.evt modeM0/AS1C02_041T02_9000001282cztM0_level2_quad_clean.evt
Size (bytes)7,026,128,6401,163,076,480
Size6.5 GB 1.1 GB
Events in quadrant A58,334,7227,202,155
Events in quadrant B48,664,4497,321,487
Events in quadrant C45,009,3247,155,966
Events in quadrant D54,208,2066,867,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019800
B019800
C019800
D019800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02372940
B02074080
C01999330
D02278470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9748415211.560256%
B9748112951.328464%
C974887220.740604%
D9748524942.558342%

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 114646 97503 270 270 0.24% 0.28%
B 114646 97503 109 109 0.10% 0.11%
C 114646 97504 20 20 0.02% 0.02%
D 114646 97505 1728 1728 1.51% 1.77%

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 8 5 9555454 4088.07 11665 11445 2334.6
A 1 162 1472826 625.97 11665 11445 2334.6
A 15 223 584237 245.35 11665 11445 2334.6
B 8 234 838655 375.53 11780 11516 2202.6
B 0 230 540411 240.12 11780 11516 2202.6
B 0 214 305168 133.32 11780 11516 2202.6
C 9 68 639479 240.86 11343 11385 2607.7
C 13 61 87178 29.06 11343 11385 2607.7
C 8 222 60886 18.98 11343 11385 2607.7
D 1 52 6691517 2238.41 11162 10927 2984.5
D 7 71 786332 259.81 11162 10927 2984.5
D 9 64 700240 230.96 11162 10927 2984.5

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