ASTROSAT CZTI

Data Quality Report

Orbit 16680

Creation date: 2024-06-27T17:26:08.027549
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/AS1A05_012T02_9000002468_16680cztM0_level2.evt modeM0/AS1A05_012T02_9000002468_16680cztM0_level2_quad_clean.evt
Size (bytes)91,805,76020,142,720
Size87.6 MB 19.2 MB
Events in quadrant A712,956129,844
Events in quadrant B515,099134,591
Events in quadrant C476,953131,565
Events in quadrant D995,004127,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029841
B022980
C022790
D037710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1138917.996485%
B113810.087873%
C113820.175747%
D1138131.142355%

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 1139 1139 85 85 7.46% 7.46%
B 1139 1139 0 0 0.00% 0.00%
C 1139 1139 0 0 0.00% 0.00%
D 1139 1139 12 12 1.05% 1.05%

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 261447 10100.66 117 114 25.9
A 12 96 1265 44.49 117 114 25.9
A 0 226 981 33.51 117 114 25.9
B 0 229 21469 828.14 123 120 25.8
B 15 35 5251 199.03 123 120 25.8
B 0 189 4534 171.22 123 120 25.8
C 14 238 17834 617.43 116 116 28.7
C 7 247 3591 121.1 116 116 28.7
C 3 233 1349 42.97 116 116 28.7
D 2 16 508374 17318.78 114 110 29.3
D 1 52 43554 1480.33 114 110 29.3
D 2 234 4498 149.52 114 110 29.3

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