ASTROSAT CZTI

Data Quality Report

Orbit 14374

Creation date: 2024-06-27T16:54:12.909819
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/AS1A04_149T01_9000002118_14374cztM0_level2.evt modeM0/AS1A04_149T01_9000002118_14374cztM0_level2_quad_clean.evt
Size (bytes)478,497,60078,773,760
Size456.3 MB 75.1 MB
Events in quadrant A3,224,714489,146
Events in quadrant B3,477,130492,267
Events in quadrant C3,725,526490,108
Events in quadrant D3,633,779471,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133863
B0141612
C0149672
D0148512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63381051.656674%
B63381502.366677%
C63381151.814453%
D63381772.792679%

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 7569 6339 2 2 0.03% 0.03%
B 7569 6339 13 13 0.17% 0.21%
C 7569 6339 5 5 0.07% 0.08%
D 7569 6339 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 12 189 66674 405.03 813 795 162.7
A 15 69 13738 79.57 813 795 162.7
A 8 15 13046 75.32 813 795 162.7
B 0 229 169173 1125.51 811 791 149.6
B 4 142 47944 315.18 811 791 149.6
B 0 214 27482 178.41 811 791 149.6
C 3 233 580581 3217.96 801 805 180.2
C 14 234 19327 102.8 801 805 180.2
C 13 61 5804 27.74 801 805 180.2
D 12 110 469188 2504.4 791 771 187.0
D 2 120 60451 319.08 791 771 187.0
D 2 152 53886 283.98 791 771 187.0

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