ASTROSAT CZTI

Data Quality Report

Orbit 20230811_A12_102T01_9000005812_level2

Creation date: 2023-08-15T12:53:39.660798
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/AS1A12_102T01_9000005812cztM0_level2.fits modeM0/AS1A12_102T01_9000005812cztM0_level2_quad_clean.evt
Size (bytes)440,343,360638,282,880
Size419.9 MB 608.7 MB
Events in quadrant A2,639,3824,173,757
Events in quadrant B2,514,0464,149,205
Events in quadrant C2,557,6043,964,928
Events in quadrant D2,180,0123,600,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01083700
B01051060
C01011590
D01451850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010280
B010280
C010280
D010280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501871570.312830%
B501884140.824898%
C50188310.061768%
D5018614922.972941%

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 69063 50188 0 0 0.00% 0.00%
B 69064 50178 0 0 0.00% 0.00%
C 69064 50188 0 0 0.00% 0.00%
D 69064 50170 0 0 0.00% 0.00%

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 9 19 2213 9.04 688 647 173.2
A 7 110 2192 8.92 688 647 173.2
A 0 29 2190 8.91 688 647 173.2
B 2 9 2209 12.11 665 636 129.9
B 3 80 1823 9.14 665 636 129.9
B 2 8 1809 9.03 665 636 129.9
C 1 81 2048 8.19 675 632 172.9
C 3 203 2034 8.11 675 632 172.9
C 3 202 2021 8.04 675 632 172.9
D 4 160 1701 6.74 624 567 168.2
D 6 38 1617 6.24 624 567 168.2
D 1 3 1593 6.1 624 567 168.2

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