ASTROSAT CZTI

Data Quality Report

Orbit 07166

Creation date: 2024-06-27T15:16:25.638596
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/AS1A02_175T01_9000000976_07166cztM0_level2.evt modeM0/AS1A02_175T01_9000000976_07166cztM0_level2_quad_clean.evt
Size (bytes)394,122,24061,035,840
Size375.9 MB 58.2 MB
Events in quadrant A2,877,154369,830
Events in quadrant B2,575,909384,017
Events in quadrant C2,847,167375,951
Events in quadrant D3,284,698356,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118651
B0108621
C0116771
D0130711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51601192.306202%
B5160811.569767%
C51601182.286822%
D51601663.217054%

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 6434 5159 42 42 0.65% 0.81%
B 6434 5159 0 0 0.00% 0.00%
C 6434 5159 44 44 0.68% 0.85%
D 6434 5159 64 64 0.99% 1.24%

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 14 238 249783 1936.12 628 615 128.7
A 8 15 183917 1424.32 628 615 128.7
A 3 1 14192 105.5 628 615 128.7
B 0 214 42877 341.75 639 624 123.6
B 15 204 33927 269.36 639 624 123.6
B 4 239 13260 102.2 639 624 123.6
C 4 254 285143 1965.63 614 618 144.7
C 7 247 89895 616.77 614 618 144.7
C 9 68 42497 289.32 614 618 144.7
D 2 216 327681 2180.48 610 591 150.0
D 2 14 221669 1473.77 610 591 150.0
D 8 195 207067 1376.43 610 591 150.0

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