ASTROSAT CZTI

Data Quality Report

Orbit 26247

Creation date: 2024-06-27T19:26:35.282721
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/AS1A09_079T03_9000003790_26247cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26247cztM0_level2_quad_clean.evt
Size (bytes)527,034,24091,751,040
Size502.6 MB 87.5 MB
Events in quadrant A3,328,597576,169
Events in quadrant B3,278,046600,026
Events in quadrant C4,814,579564,825
Events in quadrant D4,077,697562,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143810
B0141360
C0187450
D0167290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68142643.874376%
B68142413.536836%
C68145848.570590%
D68144456.530672%

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 6984 6816 15 15 0.21% 0.22%
B 6984 6816 2 2 0.03% 0.03%
C 6984 6816 163 163 2.33% 2.39%
D 6984 6816 232 232 3.32% 3.40%

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 13 151504 909.4 823 804 165.7
A 13 254 10986 61.44 823 804 165.7
A 3 137 7818 42.32 823 804 165.7
B 12 111 19617 119.24 820 798 157.8
B 0 230 18239 110.51 820 798 157.8
B 7 219 17392 105.14 820 798 157.8
C 3 233 1631400 9007.05 772 777 181.0
C 14 238 121869 668.87 772 777 181.0
C 2 16 46643 253.35 772 777 181.0
D 1 52 1040157 5498.26 792 770 189.0
D 2 234 28321 145.74 792 770 189.0
D 2 120 14738 73.89 792 770 189.0

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