ASTROSAT CZTI

Data Quality Report

Orbit 20181005_C04_007T01_9000002408_level2

Creation date: 2018-10-06T10:55:30.386659
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/AS1C04_007T01_9000002408cztM0_level2_bc.evt modeM0/AS1C04_007T01_9000002408cztM0_level2_quad_clean.evt
Size (bytes)987,546,240266,636,160
Size941.8 MB 254.3 MB
Events in quadrant A4,953,2791,788,253
Events in quadrant B14,307,7471,376,767
Events in quadrant C4,253,6531,744,208
Events in quadrant D4,952,2331,718,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04300
B04300
C04300
D04300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0458900
B0960160
C0436840
D0457250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209976122.914702%
B20997865541.220174%
C209976172.938515%
D209975792.757537%

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 22343 21000 32 32 0.14% 0.15%
B 22343 20955 458 458 2.05% 2.19%
C 22343 20998 0 0 0.00% 0.00%
D 22343 20998 8 8 0.04% 0.04%

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 15 174 611018 2410.54 1121 1097 253.0
A 15 239 33735 128.99 1121 1097 253.0
A 12 194 7476 25.21 1121 1097 253.0
B 3 112 10097535 59146.65 857 840 170.7
B 4 173 280477 1638.12 857 840 170.7
B 5 65 263969 1541.41 857 840 170.7
C 3 233 34217 128.77 1085 1082 257.3
C 0 207 24896 92.55 1085 1082 257.3
C 8 128 11818 41.72 1085 1082 257.3
D 10 70 270946 1010.52 1110 1068 267.1
D 12 110 101010 374.22 1110 1068 267.1
D 2 234 86730 320.75 1110 1068 267.1

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