ASTROSAT CZTI

Data Quality Report

Orbit 20180330_T02_038T01_9000001994_level2

Creation date: 2018-04-02T10:20:05.088444
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/AS1T02_038T01_9000001994cztM0_level2_bc.evt modeM0/AS1T02_038T01_9000001994cztM0_level2_quad_clean.evt
Size (bytes)3,619,094,4001,449,970,560
Size3.4 GB 1.4 GB
Events in quadrant A22,722,2039,796,151
Events in quadrant B24,924,0279,728,845
Events in quadrant C25,530,0749,704,401
Events in quadrant D30,677,8378,898,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01430
B01430
C01430
D01430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017200
B017200
C017200
D017200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01887780
B01990180
C01983220
D02214760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8453713121.551983%
B8453725162.976212%
C845379401.111939%
D8453739064.620462%

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 97738 84530 10 10 0.01% 0.01%
B 97739 84529 140 140 0.14% 0.17%
C 97739 84529 3 3 0.00% 0.00%
D 97738 84529 200 200 0.20% 0.24%

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 14 238 1057589 699.65 5504 5132 1504.3
A 15 69 180919 116.86 5504 5132 1504.3
A 1 162 173036 111.62 5504 5132 1504.3
B 3 64 1462094 1151.68 5477 5347 1264.9
B 0 182 586163 459.18 5477 5347 1264.9
B 5 32 398636 310.93 5477 5347 1264.9
C 3 233 4416101 3188.36 5377 5325 1383.4
C 12 4 70439 47.07 5377 5325 1383.4
C 14 234 36388 22.45 5377 5325 1383.4
D 13 122 4596107 3215.17 5248 4917 1428.0
D 5 222 1784152 1245.98 5248 4917 1428.0
D 8 195 1742009 1216.47 5248 4917 1428.0

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