ASTROSAT CZTI

Data Quality Report

Orbit 20170108_A02_103T01_9000000950_level2

Creation date: 2017-09-22T19:04:57.315706
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/AS1A02_103T01_9000000950cztM0_level2.evt modeM0/AS1A02_103T01_9000000950cztM0_level2_quad_clean.evt
Size (bytes)9,089,222,400913,656,960
Size8.5 GB 871.3 MB
Events in quadrant A39,904,6685,969,132
Events in quadrant B45,874,5325,999,577
Events in quadrant C133,612,5124,229,712
Events in quadrant D50,239,9105,713,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01743620
B01920550
C04543840
D02047200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01410
B01410
C01410
D01430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017080
B017080
C017080
D017080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A838709221.099320%
B8387020492.443067%
C838704022747.963515%
D8387020662.463336%

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 102722 83888 15 15 0.01% 0.02%
B 102722 83888 352 352 0.34% 0.42%
C 102722 83882 33671 33671 32.78% 40.14%
D 102722 83888 953 953 0.93% 1.14%

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 4 2 206236 95.29 10247 10056 2058.7
A 0 226 98475 42.95 10247 10056 2058.7
A 12 194 96224 41.86 10247 10056 2058.7
B 0 228 4441363 2305.43 10226 10004 1922.1
B 4 48 577361 295.17 10226 10004 1922.1
B 4 81 368068 186.28 10226 10004 1922.1
C 9 247 105067548 63700.35 7210 7253 1649.3
C 7 247 240022 141.13 7210 7253 1649.3
C 13 61 55544 29.28 7210 7253 1649.3
D 8 195 5751749 2379.88 9932 9640 2412.8
D 1 20 2188952 903.24 9932 9640 2412.8
D 2 136 1547757 637.49 9932 9640 2412.8

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