ASTROSAT CZTI

Data Quality Report

Orbit 11939

Creation date: 2024-06-27T16:20:19.497136
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/AS1A04_124T01_9000001766_11939cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11939cztM0_level2_quad_clean.evt
Size (bytes)522,561,600125,115,840
Size498.4 MB 119.3 MB
Events in quadrant A3,285,051853,482
Events in quadrant B4,680,117846,090
Events in quadrant C3,019,843852,647
Events in quadrant D4,412,586796,462

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140712
B0183401
C0133231
D0174741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6316741.171628%
B63164246.713110%
C6316580.918303%
D63162614.132362%

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 7512 6317 0 0 0.00% 0.00%
B 7512 6317 249 249 3.31% 3.94%
C 7512 6317 7 7 0.09% 0.11%
D 7512 6317 201 201 2.68% 3.18%

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 1 162 97612 629.0 770 756 154.0
A 1 178 51694 330.8 770 756 154.0
A 7 144 46935 299.9 770 756 154.0
B 4 239 603603 4296.3 759 742 140.3
B 3 64 516588 3676.19 759 742 140.3
B 15 204 272248 1934.89 759 742 140.3
C 0 10 32691 184.62 758 762 172.9
C 12 4 22465 125.49 758 762 172.9
C 13 61 5726 28.7 758 762 172.9
D 1 52 698908 3982.47 742 723 175.3
D 8 195 407310 2319.19 742 723 175.3
D 13 122 249822 1420.87 742 723 175.3

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