ASTROSAT CZTI

Data Quality Report

Orbit 14291

Creation date: 2024-06-27T16:53:02.382616
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_231T01_9000002106_14291cztM0_level2.evt modeM0/AS1A04_231T01_9000002106_14291cztM0_level2_quad_clean.evt
Size (bytes)718,076,160103,115,520
Size684.8 MB 98.3 MB
Events in quadrant A3,658,223691,938
Events in quadrant B4,014,252684,872
Events in quadrant C3,929,589673,193
Events in quadrant D9,659,364571,738

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155082
B0166601
C0163291
D0336651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7175610.850174%
B71752032.829268%
C7175230.320557%
D7175182425.421603%

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 7426 7177 0 0 0.00% 0.00%
B 7426 7177 89 89 1.20% 1.24%
C 7426 7177 0 0 0.00% 0.00%
D 7426 7177 1545 1545 20.81% 21.53%

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 12 189 218279 1259.77 845 829 172.6
A 8 15 170036 980.28 845 829 172.6
A 15 69 9212 48.57 845 829 172.6
B 0 229 362489 2257.49 833 811 160.2
B 0 182 234747 1460.16 833 811 160.2
B 10 245 39291 240.18 833 811 160.2
C 3 233 760559 4059.45 808 811 187.2
C 8 128 6808 32.04 808 811 187.2
C 13 61 5968 27.55 808 811 187.2
D 13 122 5127471 28851.97 741 720 177.7
D 5 222 1133912 6377.3 741 720 177.7
D 2 136 271391 1523.26 741 720 177.7

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