ASTROSAT CZTI

Data Quality Report

Orbit 20170519_A03_065T01_9000001238_level2

Creation date: 2017-09-23T23:31:49.300963
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_065T01_9000001238cztM0_level2.evt modeM0/AS1A03_065T01_9000001238cztM0_level2_quad_clean.evt
Size (bytes)2,904,672,960476,876,160
Size2.7 GB 454.8 MB
Events in quadrant A24,446,3142,931,030
Events in quadrant B18,966,2022,997,705
Events in quadrant C19,261,0772,933,237
Events in quadrant D22,607,0472,845,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08120
B08120
C08120
D08120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0986650
B0823870
C0837990
D0929830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A398477001.756719%
B398513570.895837%
C398572570.644805%
D398506441.616060%

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 45460 39867 300 300 0.66% 0.75%
B 45460 39867 22 22 0.05% 0.06%
C 45460 39868 44 44 0.10% 0.11%
D 45460 39867 392 392 0.86% 0.98%

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 4718829 4914.81 4758 4653 959.2
A 15 174 1142126 1185.88 4758 4653 959.2
A 5 16 207198 211.17 4758 4653 959.2
B 10 16 207904 223.78 4783 4665 908.2
B 12 111 103257 108.55 4783 4665 908.2
B 11 111 83410 86.7 4783 4665 908.2
C 9 68 997321 930.27 4625 4650 1067.1
C 14 234 113752 102.24 4625 4650 1067.1
C 10 22 59490 51.39 4625 4650 1067.1
D 8 195 2505876 2246.88 4601 4490 1113.3
D 2 152 748392 668.21 4601 4490 1113.3
D 1 52 520363 463.38 4601 4490 1113.3

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