ASTROSAT CZTI

Data Quality Report

Orbit 23901

Creation date: 2024-06-27T18:59:55.582235
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/AS1A07_142T01_9000003540_23901cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23901cztM0_level2_quad_clean.evt
Size (bytes)529,332,48094,029,120
Size504.8 MB 89.7 MB
Events in quadrant A3,499,110603,827
Events in quadrant B3,753,064607,903
Events in quadrant C3,622,733573,730
Events in quadrant D4,670,353564,005

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148342
B0155432
C0150812
D0186102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71501071.496503%
B71511712.391274%
C71511612.251433%
D71513534.936373%

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 8770 7152 0 0 0.00% 0.00%
B 8771 7153 29 29 0.33% 0.41%
C 8771 7153 16 16 0.18% 0.22%
D 8771 7153 170 170 1.94% 2.38%

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 13 254 12019 61.23 907 887 181.8
A 3 137 7919 38.68 907 887 181.8
A 0 226 7781 37.92 907 887 181.8
B 0 245 100589 583.93 903 881 170.8
B 0 189 38238 218.78 903 881 170.8
B 15 33 23610 133.11 903 881 170.8
C 14 238 137249 679.8 859 864 200.6
C 0 10 83404 411.41 859 864 200.6
C 10 9 18032 85.57 859 864 200.6
D 12 218 1045586 4974.86 860 832 210.0
D 7 238 102966 486.34 860 832 210.0
D 12 233 87972 414.94 860 832 210.0

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