ASTROSAT CZTI

Data Quality Report

Orbit 06875

Creation date: 2024-06-27T15:12:38.540139
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/AS1A02_005T01_9000000948_06875cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06875cztM0_level2_quad_clean.evt
Size (bytes)468,498,24066,576,960
Size446.8 MB 63.5 MB
Events in quadrant A3,267,514394,728
Events in quadrant B3,449,905398,637
Events in quadrant C3,375,064396,230
Events in quadrant D3,665,122383,380

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137733
B0144952
C0139092
D0149762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6348981.543793%
B6348901.417769%
C63481011.591052%
D63481021.606805%

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 7678 6349 1 1 0.01% 0.02%
B 7678 6349 4 4 0.05% 0.06%
C 7678 6349 0 0 0.00% 0.00%
D 7678 6349 19 19 0.25% 0.30%

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 15 223 45522 265.16 834 817 168.6
A 13 248 8410 45.04 834 817 168.6
A 0 226 8072 43.03 834 817 168.6
B 0 219 66204 421.56 836 817 155.1
B 0 214 61186 389.21 836 817 155.1
B 15 204 43925 277.92 836 817 155.1
C 9 247 188304 1008.24 813 817 186.0
C 13 61 6559 30.88 813 817 186.0
C 9 16 5398 24.63 813 817 186.0
D 12 221 258894 1304.4 818 795 197.9
D 13 169 138372 695.3 818 795 197.9
D 8 195 91020 455.99 818 795 197.9

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