ASTROSAT CZTI

Data Quality Report

Orbit 00273

Creation date: 2024-06-27T13:58:35.085848
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_00273cztM0_level2.evt modeM0/AS1P01_126T01_9000000030_00273cztM0_level2_quad_clean.evt
Size (bytes)891,970,56064,229,760
Size850.6 MB 61.3 MB
Events in quadrant A6,840,112389,539
Events in quadrant B6,827,873396,436
Events in quadrant C6,182,043389,181
Events in quadrant D6,792,581379,022

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242643
B0242272
C0223492
D0241722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558880.143164%
B558830.053686%
C5588140.250537%
D5588260.465283%

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 7293 5589 180 180 2.47% 3.22%
B 7293 5589 97 97 1.33% 1.74%
C 7293 5589 70 70 0.96% 1.25%
D 7293 5589 252 252 3.46% 4.51%

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 15 66 21044 49.24 1758 1742 392.0
A 12 149 8291 16.71 1758 1742 392.0
A 13 239 5668 10.02 1758 1742 392.0
B 0 157 102023 245.57 1746 1760 408.3
B 5 46 20472 45.83 1746 1760 408.3
B 5 2 13027 27.6 1746 1760 408.3
C 7 221 32115 70.23 1552 1605 434.4
C 3 159 22270 47.57 1552 1605 434.4
C 1 1 12388 24.82 1552 1605 434.4
D 13 7 250723 525.16 1513 1571 474.4
D 10 154 228113 477.5 1513 1571 474.4
D 12 196 163452 341.21 1513 1571 474.4

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