ASTROSAT CZTI

Data Quality Report

Orbit 03381

Creation date: 2024-06-27T14:28:16.458939
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/AS1G05_112T01_9000000452_03381cztM0_level2.evt modeM0/AS1G05_112T01_9000000452_03381cztM0_level2_quad_clean.evt
Size (bytes)1,704,136,320235,710,720
Size1.6 GB 224.8 MB
Events in quadrant A11,173,1831,399,465
Events in quadrant B15,592,0191,382,274
Events in quadrant C12,126,6091,373,168
Events in quadrant D11,106,0651,340,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04820
B04820
C04820
D04820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498006
B0625345
C0530777
D0506995

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A238694932.065441%
B238697333.070929%
C238684892.048768%
D238695022.103146%

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 26094 23875 40 40 0.15% 0.17%
B 26094 23875 129 129 0.49% 0.54%
C 26094 23875 150 150 0.57% 0.63%
D 26094 23875 143 143 0.55% 0.60%

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 0 118 215168 375.01 2761 2694 566.6
A 8 15 105491 181.43 2761 2694 566.6
A 14 249 100820 173.19 2761 2694 566.6
B 4 170 2195019 4069.07 2786 2715 538.8
B 15 204 929114 1719.46 2786 2715 538.8
B 2 249 580997 1073.33 2786 2715 538.8
C 1 192 1383354 2191.47 2686 2701 630.0
C 6 80 56310 85.09 2686 2701 630.0
C 15 208 35840 52.6 2686 2701 630.0
D 12 79 532996 806.02 2679 2596 658.0
D 13 223 141443 211.0 2679 2596 658.0
D 2 118 65360 95.38 2679 2596 658.0

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