ASTROSAT CZTI

Data Quality Report

Orbit 07761

Creation date: 2024-06-27T15:23:40.151613
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_132T01_9000001068_07761cztM0_level2.evt modeM0/AS1A02_132T01_9000001068_07761cztM0_level2_quad_clean.evt
Size (bytes)446,437,44080,524,800
Size425.8 MB 76.8 MB
Events in quadrant A3,137,060491,024
Events in quadrant B3,361,545502,741
Events in quadrant C3,116,334501,814
Events in quadrant D3,447,905473,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138252
B0142441
C0138131
D0149271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67271572.333878%
B67271642.437937%
C67271211.798722%
D67271682.497399%

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 7232 6727 0 0 0.00% 0.00%
B 7232 6727 4 4 0.06% 0.06%
C 7232 6727 0 0 0.00% 0.00%
D 7232 6727 25 25 0.35% 0.37%

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 0 226 7757 41.46 812 792 168.0
A 12 194 7356 39.07 812 792 168.0
A 13 14 6168 32.0 812 792 168.0
B 4 173 129257 817.26 815 795 157.2
B 4 81 24154 148.61 815 795 157.2
B 0 214 16388 99.2 815 795 157.2
C 13 61 5925 27.59 796 799 185.8
C 8 128 5186 23.61 796 799 185.8
C 8 112 3231 13.09 796 799 185.8
D 1 52 215900 1100.03 794 770 195.6
D 2 152 128316 652.19 794 770 195.6
D 2 14 61245 309.23 794 770 195.6

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