ASTROSAT CZTI

Data Quality Report

Orbit 20160124_T01_034T01_9000000290_level2

Creation date: 2016-09-06T17:54:35.542434
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/AS1T01_034T01_9000000290cztM0_level2_bc.evt modeM0/AS1T01_034T01_9000000290cztM0_level2_quad_clean.evt
Size (bytes)2,442,234,2401,076,604,480
Size2.3 GB 1.0 GB
Events in quadrant A16,654,0087,048,778
Events in quadrant B13,517,7937,101,932
Events in quadrant C13,736,6626,900,249
Events in quadrant D25,275,5946,751,003

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03121950
B03084630
C02945910
D03243730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B1140
C1140
D110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014020
B014040
C014040
D014020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A701673410.485983%
B701552550.363481%
C701502920.416251%
D7014313601.938896%

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 80457 70183 0 0 0.00% 0.00%
B 80457 70172 4 4 0.00% 0.01%
C 80457 70171 69 69 0.09% 0.10%
D 80457 70161 220 220 0.27% 0.31%

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 0 231 4343428 6617.36 3135 3067 655.9
A 10 2 91806 135.29 3135 3067 655.9
A 13 9 59906 86.66 3135 3067 655.9
B 8 3 786172 1374.53 3198 3100 569.7
B 0 234 121129 207.18 3198 3100 569.7
B 4 200 93288 158.31 3198 3100 569.7
C 8 208 1604047 2523.51 3050 2993 634.5
C 10 34 41865 61.27 3050 2993 634.5
C 9 236 19817 26.52 3050 2993 634.5
D 7 85 7814988 11878.85 3053 2958 657.6
D 7 204 2225968 3380.27 3053 2958 657.6
D 1 83 741628 1123.21 3053 2958 657.6

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