ASTROSAT CZTI

Data Quality Report

Orbit 31568

Creation date: 2024-06-27T20:30:03.085859
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_056T01_9000004598_31568cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31568cztM0_level2_quad_clean.evt
Size (bytes)562,533,120113,195,520
Size536.5 MB 108.0 MB
Events in quadrant A3,138,963760,797
Events in quadrant B5,137,557774,300
Events in quadrant C3,433,372746,219
Events in quadrant D4,903,843710,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135421
B0198101
C0143051
D0189731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243360.576646%
B62441091.745676%
C62431452.322601%
D62431372.194458%

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 7463 6243 5 5 0.07% 0.08%
B 7464 6244 8 8 0.11% 0.13%
C 7463 6243 27 27 0.36% 0.43%
D 7463 6243 87 87 1.17% 1.39%

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 5 168 17643 106.61 805 789 158.1
A 8 255 15809 95.01 805 789 158.1
A 13 254 11917 70.39 805 789 158.1
B 6 159 1698773 11333.72 806 788 149.8
B 4 80 154685 1027.23 806 788 149.8
B 0 190 51414 337.92 806 788 149.8
C 14 238 127216 689.78 786 792 183.3
C 10 22 103133 558.38 786 792 183.3
C 0 10 68058 367.01 786 792 183.3
D 8 195 1545385 8431.57 782 762 183.2
D 13 249 266634 1451.3 782 762 183.2
D 12 218 58853 317.1 782 762 183.2

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