ASTROSAT CZTI

Data Quality Report

Orbit 04196

Creation date: 2024-06-27T14:38:38.552346
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/AS1G05_240T01_9000000536_04196cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04196cztM0_level2_quad_clean.evt
Size (bytes)670,628,16064,310,400
Size639.6 MB 61.3 MB
Events in quadrant A6,469,653349,865
Events in quadrant B3,872,272399,898
Events in quadrant C6,358,899370,359
Events in quadrant D3,178,182381,807

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234622
B0154691
C0231391
D0137071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6366126519.871191%
B63662113.314483%
C6366108016.965127%
D6366691.083883%

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 7606 6366 819 819 10.77% 12.87%
B 7606 6367 112 112 1.47% 1.76%
C 7606 6367 1057 1057 13.90% 16.60%
D 7606 6367 20 20 0.26% 0.31%

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 0 50 2608005 17425.35 740 725 149.6
A 12 247 484341 3232.17 740 725 149.6
A 0 199 250727 1670.85 740 725 149.6
B 3 0 602035 3950.61 800 783 152.2
B 14 167 60046 389.4 800 783 152.2
B 10 16 59235 384.07 800 783 152.2
C 9 144 3503811 20854.6 726 730 168.0
C 14 67 16094 91.47 726 730 168.0
C 13 61 5871 30.61 726 730 168.0
D 13 239 72498 383.31 776 756 187.2
D 10 172 42096 220.87 776 756 187.2
D 13 61 32630 170.3 776 756 187.2

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