ASTROSAT CZTI

Data Quality Report

Orbit 24982

Creation date: 2024-06-27T19:12:18.684968
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/AS1A08_003T18_9000003658_24982cztM0_level2.evt modeM0/AS1A08_003T18_9000003658_24982cztM0_level2_quad_clean.evt
Size (bytes)468,639,36097,617,600
Size446.9 MB 93.1 MB
Events in quadrant A3,198,989643,856
Events in quadrant B3,319,417668,857
Events in quadrant C3,291,362617,751
Events in quadrant D3,959,513590,477

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133622
B0136592
C0136082
D0159152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243500.800897%
B6243580.929041%
C6243881.409579%
D62431021.633830%

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 7563 6244 0 0 0.00% 0.00%
B 7563 6244 1 1 0.01% 0.02%
C 7563 6244 4 4 0.05% 0.06%
D 7563 6244 59 59 0.78% 0.94%

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 13 254 8779 48.17 830 815 165.3
A 0 226 7230 38.8 830 815 165.3
A 3 137 7229 38.79 830 815 165.3
B 10 246 25561 160.2 831 812 154.5
B 12 111 18211 112.63 831 812 154.5
B 11 111 16431 101.1 831 812 154.5
C 14 238 128912 693.25 796 804 184.8
C 0 10 46226 245.8 796 804 184.8
C 3 233 7899 38.39 796 804 184.8
D 10 70 407680 2133.51 793 772 190.7
D 7 238 192177 1003.58 793 772 190.7
D 1 52 164927 860.7 793 772 190.7

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