ASTROSAT CZTI

Data Quality Report

Orbit 32723

Creation date: 2024-06-27T20:41:15.150180
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/AS1A10_123T04_9000004726_32723cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32723cztM0_level2_quad_clean.evt
Size (bytes)908,288,64099,213,120
Size866.2 MB 94.6 MB
Events in quadrant A4,344,440745,619
Events in quadrant B14,266,547327,197
Events in quadrant C3,854,737747,379
Events in quadrant D4,589,641715,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192491587
B0513094435
C0181152138
D0206252461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03010
B0309
C03111
D03113

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015212
B015218
C015218
D015214

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67922784.093051%
B6570509977.610350%
C67351221.811433%
D66681922.879424%

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 10511 7032 130 130 1.24% 1.85%
B 10513 6749 4421 4421 42.05% 65.51%
C 10513 6963 86 86 0.82% 1.24%
D 10513 6885 167 167 1.59% 2.43%

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 15 249 1196223 7667.67 777 762 155.9
A 15 237 125177 797.99 777 762 155.9
A 13 254 12675 76.41 777 762 155.9
B 12 1 12167188 166321.66 383 376 73.2
B 4 206 345302 4715.18 383 376 73.2
B 0 197 59752 811.68 383 376 73.2
C 9 236 353294 2029.01 751 758 173.7
C 0 239 329710 1893.27 751 758 173.7
C 15 208 101274 578.52 751 758 173.7
D 2 250 671776 3832.49 736 722 175.1
D 8 195 220921 1257.59 736 722 175.1
D 7 80 172689 982.13 736 722 175.1

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