ASTROSAT CZTI

Data Quality Report

Orbit 24765

Creation date: 2024-06-27T19:09:37.900349
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/AS1A07_147T01_9000003624_24765cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24765cztM0_level2_quad_clean.evt
Size (bytes)478,437,12067,204,800
Size456.3 MB 64.1 MB
Events in quadrant A3,379,521412,074
Events in quadrant B3,611,514416,804
Events in quadrant C3,551,239389,317
Events in quadrant D3,523,472380,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136502
B0145282
C0141992
D0142553

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6241220.352508%
B6241761.217754%
C6241781.249800%
D6240160.256410%

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 7546 6242 0 0 0.00% 0.00%
B 7546 6242 24 24 0.32% 0.38%
C 7546 6242 29 29 0.38% 0.46%
D 7545 6241 9 9 0.12% 0.14%

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 8703 44.89 877 863 174.6
A 0 226 7468 37.82 877 863 174.6
A 3 137 7362 37.22 877 863 174.6
B 3 64 100592 607.81 867 849 164.1
B 10 246 70432 424.02 867 849 164.1
B 12 111 19346 112.72 867 849 164.1
C 7 247 133327 703.03 818 829 188.5
C 14 238 131421 692.92 818 829 188.5
C 2 16 95205 500.76 818 829 188.5
D 8 195 276081 1376.03 828 807 200.0
D 12 233 103196 511.82 828 807 200.0
D 1 52 24396 117.92 828 807 200.0

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