ASTROSAT CZTI

Data Quality Report

Orbit 19400

Creation date: 2024-06-27T18:02:28.633409
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/AS1T03_105T01_9000002876_19400cztM0_level2.evt modeM0/AS1T03_105T01_9000002876_19400cztM0_level2_quad_clean.evt
Size (bytes)921,127,68085,959,360
Size878.5 MB 82.0 MB
Events in quadrant A3,632,508586,826
Events in quadrant B3,800,086587,169
Events in quadrant C3,773,563574,312
Events in quadrant D16,185,051333,904

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156692
B0160982
C0160582
D0531322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7456831.113197%
B74561111.488734%
C74561872.508047%
D7456642186.118562%

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 7716 7457 21 21 0.27% 0.28%
B 7716 7457 12 12 0.16% 0.16%
C 7716 7457 24 24 0.31% 0.32%
D 7715 7455 5607 5607 72.68% 75.21%

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 15 174 57456 304.29 912 893 185.9
A 4 2 20936 107.83 912 893 185.9
A 12 96 20835 107.28 912 893 185.9
B 0 197 92392 528.62 911 885 173.1
B 4 216 62186 354.13 911 885 173.1
B 12 111 20409 112.79 911 885 173.1
C 14 238 137782 665.94 875 880 205.6
C 0 207 129132 623.87 875 880 205.6
C 3 233 67417 323.66 875 880 205.6
D 10 66 11714538 97914.41 491 476 119.6
D 7 238 2380566 19894.47 491 476 119.6
D 1 52 132490 1103.46 491 476 119.6

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