ASTROSAT CZTI

Data Quality Report

Orbit 20181214_T03_033T01_9000002568_level2

Creation date: 2018-12-17T09:26:38.731488
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/AS1T03_033T01_9000002568cztM0_level2_bc.evt modeM0/AS1T03_033T01_9000002568cztM0_level2_quad_clean.evt
Size (bytes)2,015,066,880507,196,800
Size1.9 GB 483.7 MB
Events in quadrant A8,586,4243,186,770
Events in quadrant B8,820,6493,242,927
Events in quadrant C8,426,7003,112,405
Events in quadrant D32,252,8842,858,047

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08780
B08780
C08780
D08780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0889260
B0898160
C0887960
D01694750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A431353180.737220%
B431355001.159152%
C431355631.305205%
D43135759317.602875%

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 47245 43133 0 0 0.00% 0.00%
B 47245 43133 3 3 0.01% 0.01%
C 47245 43133 0 0 0.00% 0.00%
D 47245 43134 2728 2728 5.77% 6.32%

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 23 146288 300.72 2181 2134 479.4
A 13 210 38931 76.76 2181 2134 479.4
A 9 143 22285 42.04 2181 2134 479.4
B 4 216 131498 307.16 2199 2139 421.1
B 0 182 53088 120.98 2199 2139 421.1
B 0 189 43859 99.06 2199 2139 421.1
C 3 233 262777 533.16 2100 2086 489.0
C 9 54 55301 108.83 2100 2086 489.0
C 8 128 13109 22.54 2100 2086 489.0
D 11 176 17437369 37306.81 1974 1899 467.4
D 1 52 2579757 5515.86 1974 1899 467.4
D 13 232 1919263 4102.6 1974 1899 467.4

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