ASTROSAT CZTI

Data Quality Report

Orbit 20170822_A03_072T01_9000001484_level2

Creation date: 2017-09-24T16:25:42.314485
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/AS1A03_072T01_9000001484cztM0_level2.evt modeM0/AS1A03_072T01_9000001484cztM0_level2_quad_clean.evt
Size (bytes)5,631,076,800949,118,400
Size5.2 GB 905.1 MB
Events in quadrant A37,747,0756,003,585
Events in quadrant B41,771,8925,946,469
Events in quadrant C37,353,6085,922,808
Events in quadrant D48,507,9315,632,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01619290
B01721510
C01637980
D01933580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016220
B015230
C015070
D016180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7627510551.383153%
B7524113551.800880%
C767768781.143587%
D7766121452.762004%

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 93532 79511 402 402 0.43% 0.51%
B 93532 78649 433 433 0.46% 0.55%
C 93532 79966 306 306 0.33% 0.38%
D 93532 79063 1612 1612 1.72% 2.04%

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 5 16 1487743 801.53 9179 8999 1844.9
A 8 15 431265 228.88 9179 8999 1844.9
A 8 5 340142 179.49 9179 8999 1844.9
B 4 239 3822394 2234.06 9070 8874 1707.0
B 11 51 884750 513.11 9070 8874 1707.0
B 10 247 585155 337.6 9070 8874 1707.0
C 4 254 2563387 1244.83 8904 8949 2052.0
C 13 61 67199 28.39 8904 8949 2052.0
C 14 234 50806 20.4 8904 8949 2052.0
D 8 195 4098938 1845.06 8934 8708 2216.9
D 12 233 3056117 1374.66 8934 8708 2216.9
D 13 104 2206816 991.54 8934 8708 2216.9

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