ASTROSAT CZTI

Data Quality Report

Orbit 31406

Creation date: 2024-06-27T20:27:54.708354
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_31406cztM0_level2.evt modeM0/AS1T04_026T01_9000004556_31406cztM0_level2_quad_clean.evt
Size (bytes)532,290,24094,498,560
Size507.6 MB 90.1 MB
Events in quadrant A3,142,081612,180
Events in quadrant B5,212,223615,590
Events in quadrant C3,365,897592,079
Events in quadrant D3,946,832575,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136852
B0203972
C0142832
D0163574

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6690120.179372%
B6690681.016442%
C6690791.180867%
D6689590.882045%

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 7725 6691 0 0 0.00% 0.00%
B 7725 6691 5 5 0.06% 0.07%
C 7725 6691 4 4 0.05% 0.06%
D 7724 6690 44 44 0.57% 0.66%

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 10329 58.5 813 796 163.0
A 3 137 8526 47.44 813 796 163.0
A 0 226 6615 35.71 813 796 163.0
B 6 159 1859237 11953.6 808 787 155.5
B 0 190 67044 426.17 808 787 155.5
B 4 80 51637 327.07 808 787 155.5
C 14 238 136359 728.88 787 791 186.0
C 10 22 97696 521.01 787 791 186.0
C 3 233 27510 143.65 787 791 186.0
D 8 195 507008 2702.95 787 766 187.3
D 12 218 239068 1272.35 787 766 187.3
D 2 250 117170 621.51 787 766 187.3

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