ASTROSAT CZTI

Data Quality Report

Orbit 31398

Creation date: 2024-06-27T20:27:47.976515
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/AS1T04_026T01_9000004556_31398cztM0_level2.evt modeM0/AS1T04_026T01_9000004556_31398cztM0_level2_quad_clean.evt
Size (bytes)348,422,40056,491,200
Size332.3 MB 53.9 MB
Events in quadrant A2,054,653372,452
Events in quadrant B3,244,460364,884
Events in quadrant C2,175,322356,609
Events in quadrant D2,815,285344,376

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082361
B0121181
C086041
D0109491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3857581.503759%
B38571523.940887%
C38571373.551983%
D38561493.864108%

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 5107 3858 0 0 0.00% 0.00%
B 5107 3857 4 4 0.08% 0.10%
C 5107 3858 11 11 0.22% 0.29%
D 5106 3857 96 96 1.88% 2.49%

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 7677 66.89 532 522 107.0
A 3 137 5293 44.6 532 522 107.0
A 0 226 4552 37.68 532 522 107.0
B 6 159 1045206 10341.54 518 506 101.0
B 4 80 121854 1201.23 518 506 101.0
B 0 190 19899 191.97 518 506 101.0
C 14 238 91950 764.89 506 511 119.5
C 3 233 31513 259.33 506 511 119.5
C 10 22 28682 235.65 506 511 119.5
D 13 249 239462 1778.49 507 500 134.4
D 8 195 236306 1755.0 507 500 134.4
D 10 203 176304 1308.43 507 500 134.4

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