ASTROSAT CZTI

Data Quality Report

Orbit 31527

Creation date: 2024-06-27T20:29:35.409780
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_053T39_9000004596_31527cztM0_level2.evt modeM0/AS1A10_053T39_9000004596_31527cztM0_level2_quad_clean.evt
Size (bytes)288,227,52073,739,520
Size274.9 MB 70.3 MB
Events in quadrant A1,702,125502,125
Events in quadrant B2,638,089516,787
Events in quadrant C2,431,163496,283
Events in quadrant D1,735,358486,618

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071271
B0100971
C096821
D071691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A325590.276498%
B3255210.645161%
C3255631.935484%
D325580.245776%

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 3255 3255 2 2 0.06% 0.06%
B 3255 3255 0 0 0.00% 0.00%
C 3255 3255 3 3 0.09% 0.09%
D 3255 3255 3 3 0.09% 0.09%

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 66431 778.96 424 417 84.7
A 13 254 5819 63.74 424 417 84.7
A 3 137 3865 40.69 424 417 84.7
B 6 159 906671 11200.82 426 417 80.9
B 4 80 49127 602.03 426 417 80.9
B 12 111 9271 109.43 426 417 80.9
C 3 233 672046 6759.75 420 426 99.4
C 14 238 67473 674.82 420 426 99.4
C 4 175 22607 223.25 420 426 99.4
D 8 195 102634 1024.27 419 410 99.8
D 2 250 20868 204.99 419 410 99.8
D 2 234 13654 132.7 419 410 99.8

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