ASTROSAT CZTI

Data Quality Report

Orbit 20427

Creation date: 2024-06-27T18:15:17.584662
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A05_188T01_9000003018_20427cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20427cztM0_level2_quad_clean.evt
Size (bytes)464,791,68096,828,480
Size443.3 MB 92.3 MB
Events in quadrant A3,305,703623,993
Events in quadrant B3,385,718628,651
Events in quadrant C3,313,158604,016
Events in quadrant D3,602,036594,608

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142391
B0143461
C0141921
D0152651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69051762.548878%
B69061712.476108%
C69062203.185636%
D69061942.809151%

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 7230 6905 2 2 0.03% 0.03%
B 7231 6906 1 1 0.01% 0.01%
C 7231 6906 0 0 0.00% 0.00%
D 7231 6906 31 31 0.43% 0.45%

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 5 16 25580 144.4 851 832 171.4
A 0 226 7432 38.51 851 832 171.4
A 3 137 7167 36.96 851 832 171.4
B 10 245 24325 145.3 842 820 161.8
B 0 219 23160 138.1 842 820 161.8
B 12 111 20105 119.21 842 820 161.8
C 14 238 127337 668.09 816 823 189.4
C 13 61 5625 25.36 816 823 189.4
C 5 4 2529 9.01 816 823 189.4
D 13 153 223263 1111.81 828 802 200.1
D 1 52 205189 1021.48 828 802 200.1
D 2 165 36360 177.71 828 802 200.1

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