ASTROSAT CZTI

Data Quality Report

Orbit 00276

Creation date: 2024-06-27T13:58:37.567024
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/AS1P01_126T01_9000000030_00276cztM0_level2.evt modeM0/AS1P01_126T01_9000000030_00276cztM0_level2_quad_clean.evt
Size (bytes)794,782,08068,843,520
Size758.0 MB 65.7 MB
Events in quadrant A6,163,986430,551
Events in quadrant B6,310,900434,841
Events in quadrant C5,597,169424,123
Events in quadrant D5,632,982412,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222302
B0226711
C0205871
D0206441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547640.073046%
B547690.164354%
C547610.018262%
D5476220.401753%

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 7212 5477 99 99 1.37% 1.81%
B 7212 5477 97 97 1.34% 1.77%
C 7212 5477 34 34 0.47% 0.62%
D 7212 5477 76 76 1.05% 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 12 149 22081 58.0 1582 1563 353.7
A 15 66 8285 19.0 1582 1563 353.7
A 13 239 5813 12.01 1582 1563 353.7
B 10 14 50109 129.23 1611 1625 375.2
B 5 46 38703 98.83 1611 1625 375.2
B 5 184 28712 72.2 1611 1625 375.2
C 1 192 18325 43.02 1414 1461 392.0
C 2 192 12793 28.91 1414 1461 392.0
C 3 159 6576 13.05 1414 1461 392.0
D 13 7 213218 501.53 1345 1397 422.4
D 1 5 150803 353.75 1345 1397 422.4
D 2 37 35434 80.59 1345 1397 422.4

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