ASTROSAT CZTI

Data Quality Report

Orbit 24828

Creation date: 2024-06-27T19:10:19.781575
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_045T01_9000003628_24828cztM0_level2.evt modeM0/AS1A07_045T01_9000003628_24828cztM0_level2_quad_clean.evt
Size (bytes)458,709,12090,679,680
Size437.5 MB 86.5 MB
Events in quadrant A3,182,024586,079
Events in quadrant B3,584,613590,042
Events in quadrant C3,249,501557,864
Events in quadrant D3,427,374552,020

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135672
B0148151
C0136621
D0143541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65971291.955434%
B65981902.879661%
C65981702.576538%
D6598921.394362%

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 6897 6598 0 0 0.00% 0.00%
B 6898 6599 31 31 0.45% 0.47%
C 6898 6599 0 0 0.00% 0.00%
D 6898 6599 3 3 0.04% 0.05%

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 13 254 9616 52.51 825 807 167.7
A 3 137 7834 41.89 825 807 167.7
A 0 226 6950 36.62 825 807 167.7
B 3 64 359605 2263.05 813 789 158.6
B 12 111 19681 119.15 813 789 158.6
B 11 111 18134 109.39 813 789 158.6
C 14 238 125343 671.24 786 790 185.6
C 7 247 32681 171.87 786 790 185.6
C 5 112 22709 118.12 786 790 185.6
D 8 195 340687 1735.99 801 778 195.8
D 1 52 49076 246.67 801 778 195.8
D 2 234 25967 128.65 801 778 195.8

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