ASTROSAT CZTI

Data Quality Report

Orbit 31159

Creation date: 2024-06-27T20:24:43.430200
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/AS1C06_010T01_9000004504_31159cztM0_level2.evt modeM0/AS1C06_010T01_9000004504_31159cztM0_level2_quad_clean.evt
Size (bytes)655,718,400128,776,320
Size625.3 MB 122.8 MB
Events in quadrant A3,182,809887,171
Events in quadrant B5,719,254863,305
Events in quadrant C3,313,571853,013
Events in quadrant D7,174,626813,814

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140342
B0222162
C0143262
D0264012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6932240.346220%
B69322493.592037%
C6932650.937680%
D69324907.068667%

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 7792 6933 0 0 0.00% 0.00%
B 7792 6933 87 87 1.12% 1.25%
C 7792 6933 9 9 0.12% 0.13%
D 7792 6933 490 490 6.29% 7.07%

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 3 247 15766 91.9 818 801 162.8
A 13 254 12395 71.2 818 801 162.8
A 11 47 11115 63.34 818 801 162.8
B 6 159 1923711 12409.22 800 779 155.0
B 12 18 468481 3018.21 800 779 155.0
B 0 190 65520 417.79 800 779 155.0
C 14 238 132813 715.62 780 782 184.5
C 0 10 83043 445.86 780 782 184.5
C 3 233 18223 94.53 780 782 184.5
D 8 195 2270413 11329.16 764 745 200.3
D 13 174 1579858 7882.22 764 745 200.3
D 13 249 240022 1194.36 764 745 200.3

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