ASTROSAT CZTI

Data Quality Report

Orbit 36980

Creation date: 2024-06-27T21:33:51.488032
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/AS1A11_079T01_9000005254_36980cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36980cztM0_level2_quad_clean.evt
Size (bytes)605,615,04075,453,120
Size577.6 MB 72.0 MB
Events in quadrant A2,804,202500,164
Events in quadrant B8,008,855461,406
Events in quadrant C2,987,928499,396
Events in quadrant D4,161,881432,114

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119313
B0276962
C0122102
D0160742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5589220.393630%
B5589135324.208266%
C5589701.252460%
D55895519.858651%

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 8785 5591 3 3 0.03% 0.05%
B 8784 5590 924 924 10.52% 16.53%
C 8785 5591 42 42 0.48% 0.75%
D 8785 5591 530 530 6.03% 9.48%

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 10 83 218618 1644.6 653 641 132.5
A 9 143 58059 433.21 653 641 132.5
A 3 137 6936 47.49 653 641 132.5
B 5 184 5458533 45983.68 607 590 118.7
B 0 221 49110 408.79 607 590 118.7
B 4 81 42161 350.24 607 590 118.7
C 15 214 241394 1634.54 632 636 147.3
C 10 20 178060 1204.56 632 636 147.3
C 0 10 51209 343.35 632 636 147.3
D 12 17 1655507 11195.97 598 583 147.8
D 2 250 106318 715.32 598 583 147.8
D 12 6 52107 348.57 598 583 147.8

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